Butt welding machine

Abstract

The invention discloses a butt welding machine which comprises a rack, and a first welding assembly and a second welding assembly are arranged on the rack. The first welding assembly and the second welding assembly each comprise a supporting seat, and a supporting frame is arranged on each supporting seat. A movable jaw is arranged on the supporting frame, and a fixed jaw is arranged on the supporting seat; the supporting base of the second welding assembly is fixedly connected with the rack, and the supporting base of the first welding assembly is in sliding fit with the rack. The movable jaw comprises a movable seat and a connecting seat, and a conductive piece is arranged between the movable seat and the connecting seat. When the fixed jaws of the first welding assembly and the second welding assembly are sleeved with a workpiece, the movable jaws of the first welding assembly and the second welding assembly move downwards, and after the workpiece is pressed, the conductive piece is powered on and the to-be-welded part of the workpiece is molten, molten weld joints are extruded together through movement of the first welding assembly, and welding of the workpiece is completed. On the basis, the welding speed can be increased, the strength of welding seams is enhanced, and the phenomena of air holes, false welding and the like of the welding seams can be effectively overcome.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, in particular to a butt welding machine. Background Art

[0002] For the straight welding of tubular materials with small diameter (within 180mm), thickness of 4.5mm and width of more than 100mm, the traditional welding method is to use straight seam welding machines such as straight seam gas shielded welding. When welding in this way, not only the welding speed is slow, but also the weld is prone to porosity and false welding, which leads to poor strength of the weld and the welding quality is difficult to control. Summary of the invention

[0003] The object of the present invention is to provide a butt welding machine to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a butt welding machine, comprising a frame, on which a first welding assembly and a second welding assembly are provided; the first welding assembly and the second welding assembly both comprise a support seat, and a support frame is provided on the support seat; a movable jaw is provided on the support frame, and a fixed jaw is provided on the support seat; the support seat of the second welding assembly is fixedly connected to the frame, and the support seat of the first welding assembly is slidably matched with the frame; the movable jaw comprises a movable seat and a connecting seat, and a conductive member is provided between the movable seat and the connecting seat.

[0005] As a preferred technical solution of the present invention: a first driving member is also provided on the support frame, and the first driving member is used to cause the movable jaw to move on the support frame.

[0006] As a preferred technical solution of the present invention: the connecting seat contacts the workpiece via a conductive plate.

[0007] As a preferred technical solution of the present invention: a second driving member is further provided on the frame, and the first welding assembly is caused to slide on the frame through the second driving member.

[0008] As a preferred technical solution of the present invention: a transformer is also provided on the second welding assembly, and the transformer is connected to the conductive member through a wire.

[0009] By adopting the above technical solution, the beneficial effect of the present invention is that when the workpiece is sleeved on the fixed jaws of the first welding assembly and the second welding assembly, the movable jaws of the first welding assembly and the second welding assembly move downward to press the workpiece, and when the conductive member is energized, the part of the workpiece to be welded melts, and then the movement of the first welding assembly is used to squeeze the molten weld together to complete the welding of the workpiece. Based on this, the welding speed can be increased, the strength of the weld can be enhanced, and the phenomenon of pores and false welding in the weld can be effectively overcome. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0011] Figure 2 It is an exploded schematic diagram of the main structure of the present invention;

[0012] Figure 3 is a schematic diagram of the exploded structure of the first welding assembly of the present invention;

[0013] Figure 4 Schematic diagram of the exploded structure of the second welding assembly of the present invention

[0014] Figure 5 It is a schematic diagram of the exploded structure of the movable jaw of the present invention.

[0015] In the figure: 1. frame; 2. second driving member; 3. first welding assembly; 30. support seat; 31. movable jaw; 32. support frame; 33. fixed jaw; 34. first driving member; 35. conductive member; 36. connecting seat; 37. conductive plate; 38. movable seat; 4. second welding assembly; 5. transformer. DETAILED DESCRIPTION

[0016] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "upper surface", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0017] See also Figure 1-5An embodiment of the present invention is as follows: a butt welding machine comprises a frame 1, on which a first welding assembly 3 and a second welding assembly 4 are provided; the first welding assembly 3 and the second welding assembly 4 both comprise a support seat 30, and a support frame 32 is provided on the support seat 30; a movable jaw 31 is provided on the support frame 32, and a fixed jaw 33 is provided on the support seat 30; the support seat 30 of the second welding assembly 4 is fixedly connected to the frame 1, and the support seat 30 of the first welding assembly 3 is slidably matched with the frame 1; the movable jaw 31 comprises a movable seat 38 and a connecting seat 36, and a conductive member 35 is provided between the movable seat 38 and the connecting seat 36.

[0018] Since the fixed jaw 33 is placed below the movable jaw 31, the movable jaw 31 moves downward on the support frame 32 by means of a guide column or a slider, so that the movable jaw 31 descends parallel to the workpiece, the slider of the movable jaw 31 moves forward and energizes the conductive member 35, and the conductive member 35 guides the current to the workpiece, and preheats the workpiece by means of resistance heating, and can heat the workpiece at the same time. When the weld is melted, the movable jaw 31 is quickly forged to make the welding parts on both sides melt together quickly; after the welding is completed, the first welding assembly 3 is reset, and the movable jaw 31 is lifted at the same time, and the workpiece can be removed from the fixed jaw 33. For example: the preheating time is 1 second, the preheating temperature is 300-400 degrees, and the welding temperature is 250-550 degrees.

[0019] Based on this, the welding speed can be increased, the strength of the weld can be enhanced, and the phenomena of pores and false welding in the weld can be effectively overcome.

[0020] Furthermore, since the support frame 32 is also provided with a first driving member 34, and the movable jaw 31 is prompted to move on the support frame 32 by the first driving member 34, the movable jaw 31 can be automatically raised and lowered, thereby further improving the degree of automation of the equipment.

[0021] In addition, since the connection seat 36 is in contact with the workpiece through the conductive plate 37, wherein the conductive plate 37 is preferably a copper plate; the conductive plate 37 is in direct contact with the workpiece, so the installation and replacement of the conductive plate 37 are facilitated.

[0022] On the basis of the above scheme, since the frame 1 is also provided with a second driving member 2, and the first welding assembly 3 is prompted to slide on the frame 1 by the second driving member 2, the first welding assembly 3 can be prompted to move toward the second welding assembly 4 by the second driving member 2, thereby realizing the automatic movement of the first welding assembly 3.

[0023] The first driving member 34 and the second driving member 2 are preferably servo motors or cylinders.

[0024] Furthermore, since a transformer 5 is also provided on the second welding assembly 4, and the transformer 5 is connected to the conductive member 35 via a wire, the setting of the transformer 5 can provide sufficient current for the movable jaw 31 to facilitate the welding of the workpiece; at the same time, the transformer 5 is installed on the second welding assembly 4, so that during the welding process of the equipment, the position of the transformer 5 is stable and does not move. Based on this, the frame can always maintain a balanced state and the frame is not easily deformed.

[0025] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A butt welding machine, characterized in that: It comprises a frame (1), on which a first welding assembly (3) and a second welding assembly (4) are provided; The first welding assembly (3) and the second welding assembly (4) both comprise a support seat (30), and a support frame (32) is provided on the support seat (30); The support frame (32) is provided with a movable jaw (31), and the support seat (30) is provided with a fixed jaw (33); The support base (30) of the second welding assembly (4) is fixedly connected to the frame (1), and the support base (30) of the first welding assembly (3) is slidably matched with the frame (1); The movable jaw (31) comprises a movable seat (38) and a connecting seat (36), and a conductive member (35) is provided between the movable seat (38) and the connecting seat (36).

2. A butt welding machine according to claim 1, characterized in that: The support frame (32) is also provided with a first driving member (34), and the first driving member (34) causes the movable jaw (31) to move on the support frame (32).

3. A butt welding machine according to claim 2, characterized in that: The connecting seat (36) contacts the workpiece via a conductive plate (37).

4. A butt welding machine according to claim 1, 2 or 3, characterized in that: The frame (1) is also provided with a second driving member (2), and the first welding assembly (3) is urged to slide on the frame (1) by means of the second driving member (2).

5. A butt welding machine according to claim 4, characterized in that: The second welding assembly (4) is also provided with a transformer (5), and the transformer (5) is connected to the conductive member (35) via a wire.

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