Seamless steel tube automatic welding equipment for assembled furniture

Abstract

The utility model discloses an assembly type furniture seamless steel pipe automatic welding device, which comprises a welding head and two oppositely arranged shells, the opposite end faces of the shells are both provided with through holes for steel pipes to insert, the two shells are sleeved with a ring body, the ring body and the through holes are combined to form a welding cavity, the outer ring face of the ring body is provided with a positioning opening, and the welding cavity is provided with a positioning hole. One end of the welding head penetrates through the positioning opening to be inserted into the welding cavity, an adjusting mechanism for driving the welding head to move inside and outside is installed on the ring body, fixing rings are installed in the through holes, and sealing rings matched with the steel pipe in diameter are installed on the inner ring faces of the fixing rings. The welding head is simple in structure, the welding cavity can be arranged in a sealed mode by installing the sealing rings with different thicknesses, chips or sparks generated in the welding process are prevented from splashing outwards, safety is improved, and the welding head can be stably rotated by 360 degrees along the positioning groove through the ring body so that 360-degree seamless welding can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, and particularly relates to an automatic welding device for seamless steel pipes used in assembled furniture. Background Art

[0002] At present, during the production of furniture, steel pipes are generally used for support. During the use of steel pipes, cutting or welding is generally carried out according to the on-site situation. However, almost all of the existing welding methods rely on manual labor. For example, after welding a part of the joint of two seamless steel pipes, it is necessary to manually rotate the two seamless steel pipes or the welding head to achieve 360° welding of the joint, which requires a large amount of physical strength, and it is easy to swing during the rotation process, resulting in deformation of the weld seam or insufficient welding. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide an automatic welding device for seamless steel pipes used in assembled furniture, which can perform sealed and stable welding to solve the problems raised in the above background art.

[0004] The utility model is realized through the following technical solutions: an automatic welding device for seamless steel pipes used in assembled furniture, including a welding head and two relatively arranged shells. Through holes for inserting steel pipes are provided on the opposite end faces of the shells. A ring body is sleeved outside the two shells. The ring body and the through holes form a welding cavity. A positioning port is provided on the outer circumferential surface of the ring body. One end of the welding head passes through the positioning port and is inserted into the welding cavity. An adjusting mechanism for driving the welding head to move in and out is installed on the ring body. Fixed rings are installed in the through holes, and sealing rings matching the diameter of the steel pipes are installed on the inner circumferential surfaces of the fixed rings.

[0005] As a preferred technical solution, the adjusting mechanism includes a lead screw, a fixed block, a first bearing and a rotating block. A fixed part protrudes from the outer circumferential surface of the ring body beside the positioning port. The first bearing is embedded and installed on the fixed part. The fixed block is installed outside the welding head. A lead screw hole opposite to the first bearing is provided on the fixed block. The lead screw is threadedly connected to the lead screw hole. One end of the lead screw is installed in the inner ring of the first bearing, and the other end is fixedly connected to the rotating block.

[0006] As a preferred technical solution, clamping plates are arranged one above the other on the outer side end faces of the shells. Second bearings are embedded and installed on the outer side surfaces of the clamping plates. Adjusting parts protrude from the outer side end faces of the shells outside the clamping plates. Screw holes are provided on the adjusting parts. Hand-tightening bolts are threadedly connected to the screw holes. One ends of the hand-tightening bolts are installed in the inner rings of the second bearings.

[0007] As a preferred technical solution, external threads are provided on the outer circumferential surfaces of the fixing rings, internal threads are provided on the inner circumferential surfaces of the through holes, and the fixing rings are all engaged and connected to the internal threads on the through holes through the external threads. Multiple slots are provided on the outer side surfaces of the fixing rings.

[0008] As a preferred technical solution, positioning grooves with an annular structure are provided on the outer circumferential surfaces of the housing, positioning rings are installed at positions on the inner circumferential surfaces of the ring body corresponding to the positioning grooves, and the positioning rings are all movably arranged in the positioning grooves.

[0009] As a preferred technical solution, the cross-section of the positioning port matches the cross-sectional shape of the welding head.

[0010] The beneficial effects of the present utility model are as follows: The structure of the present utility model is simple. The two steel pipes to be welded can be inserted into the welding cavity along the through holes, and the position of the welding head can be adjusted by the diameter of the steel pipes. By installing sealing rings with different thicknesses, the welding cavity can be sealed, avoiding the outward sputtering of debris or sparks generated during the welding process, increasing safety, and enabling the ring body to rotate the welding head stably by 360° along the positioning groove to achieve seamless welding of 360°. Description of the Drawings

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0012] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0013] Figure 2 It is a schematic diagram of the structure of the present utility model after removing the ring body;

[0014] Figure 3 It is a schematic diagram of the structure of the housing in the present utility model.

[0015] Among them, 1. Housing; 2. Ring body; 3. Fixing ring; 4. Sealing ring; 5. Clamping plate; 6. Installation part; 7. Hand-tightening bolt; 8. Welding head; 9. Fixed block; 10. Lead screw; 11. Fixed part; 12. Rotating block; 13. Positioning ring. Detailed Embodiment

[0016] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0017] All features disclosed in this specification, or all steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any way.

[0018] Any feature disclosed in this specification (including any additional claims, abstract, and drawings), unless specifically stated, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically stated, each feature is only an example of a series of equivalent or similar features.

[0019] As Figure 1 、 Figure 2 and Figure 3 As shown, an automatic welding device for seamless steel pipes for an assembled furniture of the present utility model includes a welding head 8 and two oppositely arranged shells 1. Through holes for inserting steel pipes are provided on the opposite end faces of the shells 1. A ring body 2 is sleeved outside the two shells 1. The ring body 2 and the through holes form a welding cavity. A positioning port is provided on the outer circumferential surface of the ring body 2. One end of the welding head 8 passes through the positioning port and is inserted into the welding cavity. An adjusting mechanism for driving the welding head 8 to move in and out is installed on the ring body 2. Fixed rings 3 are installed in the through holes, and sealing rings 4 matching the diameter of the steel pipes are installed on the inner circumferential surfaces of the fixed rings 3;

[0020] Among them, an observation port is provided on the ring body, and tempered glass is installed in the observation port. Through the tempered glass, the internal welding situation and the moving position of the welding head can be clearly seen.

[0021] In this embodiment, the adjusting mechanism includes a lead screw 10, a fixed block 9, a first bearing, and a rotating block 12. A fixing portion 11 protrudes from the outer circumferential surface of the ring body 2 beside the positioning port. The first bearing is embedded and installed on the fixing portion 11. The fixed block 9 is installed outside the welding head 8. A lead screw hole opposite to the first bearing is provided on the fixed block 9. The lead screw 10 is threadedly connected to the lead screw hole. One end of the lead screw 10 is installed in the inner ring of the first bearing, and the other end is fixedly connected to the rotating block 12.

[0022] In this embodiment, clamping plates 5 are arranged one above the other on the outer side end faces of the shells 1. Second bearings are embedded and installed on the outer side surfaces of the clamping plates 5. Adjusting portions protrude from the outer side end faces of the shells 1 outside the clamping plates 5. Screw holes are provided on the adjusting portions, and hand-tightening bolts 7 are threadedly connected to the screw holes. One ends of the hand-tightening bolts 7 are installed in the inner rings of the second bearings.

[0023] In this embodiment, the outer ring surface of the fixing ring 3 is provided with an external thread, and the inner ring surface of the through hole is provided with an internal thread. The fixing ring 3 is meshed with the internal thread on the through hole through the external thread. A plurality of slots are provided on the outer side surface of the fixing ring 3. Any metal rod can be inserted into the slot, and the fixing ring can be rotated so that the fixing ring can be turned out from or installed in the through hole.

[0024] In this embodiment, the outer ring surface of the shell 1 is provided with an annular positioning groove, and the inner ring surface of the ring body 2 is installed with a positioning ring 13 opposite to the positioning groove. The positioning ring 13 is movably arranged in the positioning groove so that the ring body can only rotate along the positioning groove.

[0025] In this embodiment, the cross section of the positioning opening matches the cross section shape of the welding head 8, so that the welding head can only move along the positioning opening.

[0026] During welding, sealing rings of different thicknesses can be installed according to the diameter of the steel pipe. There are multiple fixing rings, and the thicknesses of the sealing rings on the fixing rings are different. Therefore, after selecting the fixing ring, the fixing ring can be threadedly connected in the through hole, and the two steel pipes to be welded can be inserted into the welding cavity through the through hole. The outer wall surface of the steel pipe can contact the inner ring surface of the sealing ring, and after rotating the hand-tightening bolt, the hand-tightening bolt can move inward along the screw hole. The movement of the hand-tightening bolt drives the clamping plate, and the steel pipe can be clamped and fixed by the clamping plate moving inward;

[0027] After the above is completed, the screw rod can be rotated, and the rotation of the screw rod drives the fixed block, and the fixed block drives the welding head, so that the welding head moves along the positioning port toward the junction of the two steel pipes. After getting close, the welding head can work, and the rotating ring body with the positioning groove as the center can make the welding head rotate 360°, and perform stable seamless welding operations, and the welding cavity can be sealed by the sealing ring and the ring body to avoid sparks from splashing.

[0028] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. An automatic welding equipment for seamless steel pipes for assembled furniture, characterized in that: The invention comprises a welding head (8) and two shells (1) arranged opposite to each other, wherein the opposite end faces of the shells (1) are provided with through holes for inserting steel pipes, the two shells (1) are externally sleeved with a ring body (2), the ring body (2) and the through hole are combined to form a welding cavity, the outer ring surface of the ring body (2) is provided with a positioning hole, one end of the welding head (8) is inserted into the welding cavity through the positioning hole, an adjusting mechanism for driving the welding head (8) to move inward and outward is installed on the ring body (2), a fixing ring (3) is installed in the through hole, and a sealing ring (4) matching the diameter of the steel pipe is installed on the inner ring surface of the fixing ring (3).

2. The automatic welding equipment for seamless steel pipes for assembled furniture according to claim 1 is characterized in that: The adjusting mechanism comprises a screw (10), a fixed block (9), a first bearing and a rotating block (12); the outer ring surface of the ring body (2) is located on the side of the positioning opening and protrudes to form a fixed portion (11); the first bearing is embedded in the fixed portion (11); the fixed block (9) is installed on the outside of the welding head (8); a screw hole is provided on the fixed block (9) and is arranged opposite to the first bearing; the screw (10) is threadedly connected to the screw hole; one end of the screw (10) is installed in the inner ring of the first bearing, and the other end is fixedly connected to the rotating block (12).

3. The automatic welding equipment for seamless steel pipes for assembled furniture according to claim 1, characterized in that: The outer end surfaces of the housing (1) are both provided with clamping plates (5) one above and one below, and the outer end surfaces of the clamping plates (5) are both embedded with second bearings. The outer end surfaces of the housing (1) are located outside the clamping plates (5) and are protruding to form adjustment parts. The adjustment parts are both provided with screw holes, and the screw holes are both threadedly connected with hand bolts (7), and one end of the hand bolts (7) is installed in the inner ring of the second bearing.

4. The automatic welding equipment for seamless steel pipes for assembled furniture according to claim 1, characterized in that: The outer ring surface of the fixing ring (3) is provided with an external thread, the inner ring surface of the through hole is provided with an internal thread, the fixing ring (3) is meshed with the internal thread on the through hole through the external thread, and the outer side surface of the fixing ring (3) is provided with a plurality of slots.

5. The automatic welding equipment for seamless steel pipes for assembled furniture according to claim 1, characterized in that: The outer ring surface of the housing (1) is provided with a positioning groove of an annular structure, and the inner ring surface of the ring body (2) is provided with a positioning ring (13) at a position facing the positioning groove, and the positioning ring (13) is movably arranged in the positioning groove.

6. The automatic welding equipment for seamless steel pipes for assembled furniture according to claim 1, characterized in that: The cross section of the positioning opening matches the cross section shape of the welding head (8).

Images