Helical blade welding device

Abstract

According to the technical scheme, the spiral blade welding device is characterized in that the spiral blade welding device comprises a welding gun, and the welding gun is used for welding the joint of a spiral blade and a round rod; the probe continuously slides back and forth in the radial direction of the round rod in the rotating process of the round rod so as to continuously touch the position, close to the joint with the round rod, of the spiral blade; the sliding block drives the probe to slide back and forth, and the welding gun is connected with the sliding block so as to move along with the probe; the detection piece is used for detecting whether the probe is in contact with the spiral blade or not; and a driving member; through frequent reciprocating motion of the probe, the welding path is continuously corrected through the probe in the welding process, so that the welding path can be corrected in time when the helical blade is slightly deformed, and the welding quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of spiral blade welding, and more particularly to a spiral blade welding device. Background Art

[0002] Welding spiral blades outside a round rod can form a spiral drill rod. Depending on the type of drill rod, spiral blades of different widths, different pitches, and different numbers need to be welded outside the round rod. In traditional welding, the spiral blades are mostly welded manually, but in order to improve the efficiency of welding, robot welding is mostly used for welding.

[0003] In the process of welding spiral blades to round rods by robots, the spiral blades are usually first fixed to the round rods by spot welding, and then the connection between the spiral blades and the round rods is fully welded by the robot. This requires the robot to pre-set the welding path that the welding gun needs to travel. However, in the actual production process, the spiral blades may be slightly deformed due to production and transportation problems, resulting in differences in the welding paths between different spiral blades and round rods of the same specification. This often leads to problems with unqualified welding quality when welding according to the predetermined welding path. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a spiral blade welding device, which, through the frequent reciprocating motion of the probe, continuously corrects the welding path through the probe during the welding process, so that the welding path can be corrected in time when the spiral blade undergoes a slight deformation, thereby improving the welding quality.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a spiral blade welding device, comprising a welding gun, the welding gun is used to weld the connection between the spiral blade and the round rod; The probe continuously slides back and forth along the radial direction of the round rod during the rotation of the round rod to continuously touch the position of the spiral blade close to the connection with the round rod; A sliding block, the sliding block drives the probe to slide back and forth, and the welding gun is connected to the sliding block to follow the movement of the probe; A detection member, the detection member is used to detect whether the probe contacts the spiral blade; And a driving member, wherein the driving member is used to drive the sliding block to move, and the detecting member is connected to the driving member.

[0006] The present invention is further configured such that: when the detection member detects that the probe is in contact with the spiral blade, the driving member drives the sliding block to slide along the axis of the round rod to separate the probe from the spiral blade; When the detection member detects that the probe is separated from the spiral blade, the driving member drives the rod sliding block to slide along the axis direction of the round rod to make the probe approach the spiral blade.

[0007] The present invention is further configured as follows: two welding guns are provided, and the two welding guns respectively weld two sides of the connection between the spiral blade and the round rod.

[0008] The present invention is further configured as follows: an auxiliary block is provided on the sliding block, and the auxiliary block can slide on the sliding block in a direction parallel to the axis of the round rod; The sliding block is provided with an elastic member, and when the elastic member is compressed, an elastic force can be applied to the sliding block to press the probe tightly onto the spiral blade.

[0009] The present invention is further configured as follows: a lifting block capable of moving up and down on the auxiliary block is arranged on the auxiliary block, and the welding gun and the probe are both arranged on the lifting block.

[0010] The present invention is further configured as follows: the detection element is configured as a pressure sensor or a proximity sensor.

[0011] The present invention is further configured as follows: the probe is configured as a conductive probe, and the detection element is configured as a current sensor.

[0012] The present invention is further configured as follows: the lifting block is provided with mounting seats corresponding to the probe and the welding gun respectively, the mounting seats are detachably connected to the lifting block and the mounting position of the mounting seats on the lifting block is adjustable along a direction parallel to the axis of the round rod.

[0013] In summary, the present invention has the following beneficial effects compared with the prior art: the present invention uses the frequent reciprocating motion of the probe to continuously correct the welding path during the welding process, so that the welding path can be corrected in time when a slight deformation occurs in the spiral blade, thereby improving the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the embodiment when used; Figure 2 for Figure 1 An enlarged schematic diagram of part A.

[0015] In the figure: 1. welding bracket; 2. probe; 3. welding gun; 4. sliding block; 5. auxiliary block; 6. lifting block; 7. mounting base. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings of the present invention. Based on the embodiments in this application, other similar embodiments obtained by ordinary technicians in this field without making creative work should all fall within the scope of protection of this application. In addition, the directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional words used are used to illustrate rather than limit the invention.

[0017] The present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0018] Embodiment: A spiral blade welding device, see attached Figure 1 -Attached Figure 2 , including a welding gun 3, a probe 2, a sliding block 4, a detection member and a driving member, wherein the welding gun 3 is used to weld the connection between the spiral blade and the round rod; the probe 2 continuously slides back and forth along the radial direction of the round rod during the rotation of the round rod to continuously touch the position of the spiral blade close to the connection with the round rod; the sliding block 4 drives the probe 2 to slide back and forth, and the welding gun 3 is connected to the sliding block 4 to move with the probe 2; the detection member is used to detect whether the probe 2 contacts the spiral blade; the driving member is used to drive the sliding block 4 to move, and the detection member is connected to the driving member.

[0019] When the detection member detects that the probe 2 is in contact with the spiral blade, the driving member drives the sliding block 4 to slide along the axis of the round rod to separate the probe 2 from the spiral blade; when the detection member detects that the probe 2 is separated from the spiral blade, the driving member drives the rod sliding block 4 to slide along the axis of the round rod to bring the probe 2 close to the spiral blade.

[0020] When welding, the driving member drives the probe 2 to approach the position where the spiral blade is close to the connection with the round rod, and the round rod rotates around its own axis at a uniform speed. When the probe 2 touches the position where the spiral blade is close to the connection with the round rod, the driving member drives the probe 2 to move in the opposite direction and disengage from the spiral blade. When the detection member detects that the probe 2 is disengaged from the spiral blade, the driving member drives the rod sliding block 4 to slide along the axis direction of the round rod to make the probe 2 close to the spiral blade, so that during the rotation of the round rod, the probe 2 can repeatedly slide back and forth along the radial direction of the round rod to continuously touch the position where the spiral blade is close to the connection with the round rod, thereby adjusting the welding path of the welding gun 3 by moving it in a small amplitude, so that when the spiral blade is deformed and the welding path changes, the probe 2 can also guide the welding gun 3 to weld according to the path after the deformation of the spiral blade by touching itself with the spiral blade, and because the probe 2 repeatedly collides with the spiral blade and will not always be in contact with the spiral blade, the probe 2 will not adhere welding slag to the probe 2 during the process of the welding gun 3 welding the spiral blade to the round rod, thereby improving the detection accuracy and service life of the probe 2.

[0021] Specifically, two welding guns 3 are provided, and the two welding guns 3 are used to weld the two sides of the connection between the spiral blade and the round rod respectively.

[0022] Specifically, an auxiliary block 5 is provided on the sliding block 4, and the auxiliary block 5 can slide on the sliding block 4 in a direction parallel to the axis of the round rod; an elastic member is provided on the sliding block 4, and when the elastic member is compressed, it can apply elastic force to the sliding block 4 to press the probe 2 onto the spiral blade.

[0023] Specifically, the auxiliary block 5 is provided with a lifting block 6 that can move up and down on the auxiliary block 5, and the welding gun 3 and the probe 2 are both arranged on the lifting block 6. Through the arrangement of the lifting block 6, it is convenient to adjust the positions of the welding gun 3 and the probe 2 up and down, so that the welding gun 3 can be aligned with the connection between the spiral blade and the round rod.

[0024] Specifically, in some embodiments, the detection element is configured as a pressure sensor or a proximity sensor.

[0025] In this embodiment, the probe 2 is set as a conductive probe 2, and the detection element is set as a current sensor. In order to achieve welding, current is applied to the round rod and the spiral blade. After the probe 2 is set as a copper rod, when the probe 2 contacts the spiral blade, the current will be conducted to the probe 2, and the current sensor can accurately detect whether the probe 2 is conducting current, thereby judging whether the probe 2 is in contact with the spiral blade.

[0026] Specifically, the lifting block 6 is provided with mounting seats 7 corresponding to the probe 2 and the welding gun 3, respectively. The mounting seats 7 are detachably connected to the lifting block 6, and the mounting position of the mounting seats 7 on the lifting block 6 is adjustable in a direction parallel to the axis of the round rod. Through the setting of the mounting seats 7, the position of the probe 2 and the distance between the two welding guns 3 and the probe 2 can be adjusted according to the different spiral blades.

[0027] Specifically, this embodiment further includes a welding bracket 1 , and the sliding block 4 is slidably connected to the welding bracket 1 .

[0028] Specifically, the driving member is configured as a servo motor, and the sliding block 4 is slid on the welding bracket 1 by rotating the four cylinders connected to the welding bracket 1 and the nut connected to the sliding block 4. The lead screw is connected to the servo motor, and the servo motor drives the lead screw to rotate forward and reverse, thereby driving the sliding block 4 to slide on the welding bracket 1. The detection member is connected to the servo motor. When the detection member detects that the probe 2 is separated from the spiral blade, the servo motor drives the lead screw to rotate forward to drive the probe 2 to approach the spiral blade. When the detection member detects that the probe 2 is in contact with the spiral blade, the servo motor drives the lead screw to rotate in the opposite direction to drive the probe 2 away from the spiral blade.

[0029] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A spiral blade welding device, characterized in that: It comprises a welding gun (3), and the welding gun (3) is used to weld the connection between the spiral blade and the round rod; A probe (2), wherein the probe (2) continuously slides back and forth along the radial direction of the round rod during the rotation of the round rod so as to continuously touch the position of the spiral blade close to the connection with the round rod; A sliding block (4), the sliding block (4) drives the probe (2) to slide back and forth, and the welding gun (3) is connected to the sliding block (4) to follow the movement of the probe (2); A detection member, the detection member being used to detect whether the probe (2) is in contact with the spiral blade; and a driving member, wherein the driving member is used to drive the sliding block (4) to move, and the detecting member is connected to the driving member.

2. A spiral blade welding device according to claim 1, characterized in that: When the detection member detects that the probe (2) is in contact with the spiral blade, the driving member drives the sliding block (4) to slide along the axis of the round rod so that the probe (2) is separated from the spiral blade; When the detection member detects that the probe (2) is separated from the spiral blade, the driving member drives the rod sliding block (4) to slide along the axis direction of the round rod so that the probe (2) approaches the spiral blade.

3. A spiral blade welding device according to claim 2, characterized in that: Two welding guns (3) are provided, and the two welding guns (3) respectively weld the two sides of the connection between the spiral blade and the round rod.

4. A spiral blade welding device according to claim 1, characterized in that: The sliding block (4) is provided with an auxiliary block (5), and the auxiliary block (5) can slide on the sliding block (4) in a direction parallel to the axis of the round rod; The sliding block (4) is provided with an elastic member, and when the elastic member is compressed, an elastic force can be applied to the sliding block (4) to press the probe (2) tightly onto the spiral blade.

5. A spiral blade welding device according to claim 4, characterized in that: The auxiliary block (5) is provided with a lifting block (6) capable of moving up and down on the auxiliary block (5), and the welding gun (3) and the probe (2) are both arranged on the lifting block (6).

6. A spiral blade welding device according to claim 1, characterized in that: The detection element is configured as a pressure sensor or a proximity sensor.

7. A spiral blade welding device according to claim 1, characterized in that: The probe (2) is configured as a conductive probe (2), and the detection element is configured as a current sensor.

8. A spiral blade welding device according to claim 6, characterized in that: The lifting block (6) is provided with mounting seats (7) corresponding to the probe (2) and the welding gun (3) respectively; the mounting seats (7) are detachably connected to the lifting block (6); and the mounting position of the mounting seats (7) on the lifting block (6) is adjustable in a direction parallel to the axis of the round rod.

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