Longitudinal seam welding drive with back protection

Abstract

This utility model relates to the technical field of longitudinal seam welding transmission mechanisms, and discloses a longitudinal seam welding transmission mechanism with a back protection device. It includes a guide assembly, a displacement assembly, a drive assembly, a protective gas device, and a frequency-modulated motor. The guide assembly is slidably connected to the displacement assembly, which is connected to the drive assembly and the protective gas device. The fixed end of the frequency-modulated motor is connected to an external frame, and the drive end is connected to the drive assembly. The protective gas device includes an air inlet, an outer tube, and an inner tube. The air inlet is located at the bottom of the outer wall of the outer tube, and the inner tube is located within the inner cavity of the outer tube. The air inlet communicates with the inner tube. Multiple air holes are evenly distributed at the bottom of the outer wall of the inner tube, and a groove is provided at the top of the outer wall of the outer tube. Multiple air outlets are evenly distributed along the axis of the outer tube at the bottom of the groove. This utility model employs a double-tube set of an outer tube and an inner tube, with the air outlets of the outer tube and the inner tube having opposite directions. This diffused air outlet structure of the outer tube serves the purpose of back protection during welding.

Description

Technical Field

[0001] This utility model relates to the technical field of longitudinal seam welding transmission mechanism, specifically a longitudinal seam welding transmission mechanism with a back protection device. Background Technology

[0002] Currently, longitudinal seam welding transmission is basically distinguished from circumferential seam welding transmission, forming two different types of equipment. Even when some equipment combines the two, it lacks a back protection device for longitudinal seam welding transmission. This means that during the welding process, circumferential seam transmission, longitudinal seam transmission, and back protection cannot be effectively coordinated.

[0003] To address the aforementioned issues, we propose a longitudinal seam welding transmission mechanism with a back protection device. Utility Model Content

[0004] The purpose of this invention is to provide a longitudinal seam welding transmission mechanism with a back protection device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a longitudinal seam welding transmission mechanism with a back protection device, comprising a guide assembly, a displacement assembly, a drive assembly, a protective gas device, and a frequency-modulated motor;

[0006] The guide assembly is slidably connected to the displacement assembly; the top surface of the displacement assembly is connected to the drive assembly; the side wall of the displacement assembly is connected to the protective gas device; the frequency-modulated motor includes a fixed end and a drive end; the fixed end of the frequency-modulated motor is connected to the external frame; the drive end of the frequency-modulated motor is connected to the drive assembly;

[0007] The protective gas device includes an air inlet, an outer tube, and an inner tube; the air inlet is located at the bottom of the outer wall of the outer tube; the inner tube is located in the inner cavity of the outer tube; the air inlet is connected to the inner tube; multiple air holes are evenly distributed at the bottom of the outer wall of the inner tube; a groove is provided at the top of the outer wall of the outer tube; multiple air outlets are evenly distributed at the bottom surface of the groove along the axial direction of the outer tube.

[0008] Preferably, a support wall is fixedly provided in the inner cavity of the outer tube; one end of the inner tube is embedded in the side wall of the support wall; and one end of the air inlet connected to the outer tube is embedded in the support wall.

[0009] Preferably, the guide assembly includes a guide rod, two guide support plates, and a slide rail; the guide rod and the slide rail are disposed between the two guide support plates; and the displacement assembly is slidably connected to the guide rod.

[0010] Preferably, the guide assembly further includes a limiter; the limiter is provided on one side wall of the guide support plate where the guide rod is located; the limiter is electrically connected to the frequency-modulated motor.

[0011] Preferably, the displacement assembly includes a rack, a rack support frame, a displacement pulley, and a bracket;

[0012] The rack support frame is slidably connected to the guide rod; the displacement pulley is slidably connected to the slide rail; the bottom of the rack support frame is rotatably connected to the displacement pulley; the side wall of the rack support frame is connected to the bracket; the protective gas device is connected to the bracket; the rack is fixedly connected to the top surface of the rack support frame.

[0013] The drive wheel assembly includes a drive gear; the drive gear meshes with the rack.

[0014] Preferably, the drive wheel assembly further includes a bearing housing, a drive gear shaft, a bearing housing support plate, and a drive connecting plate; the drive connecting plate is connected to the side wall of the slide rail; the bearing housing support plate is connected to the side wall of the drive connecting plate; the top surface of the bearing housing support plate is connected to the bearing housing; the drive gear shaft is rotatably connected to the bearing housing; one end of the drive gear shaft passes through the bearing housing and is connected to the drive gear; the other end of the drive gear shaft is connected to the drive end of the frequency-adjustable motor via a coupling.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. A frequency-modulated motor is used for driving, and the drive gear and rack mesh to convert the rotary motion mode in the existing technology into a linear motion mode.

[0017] 2. This utility model features a specially designed airflow expansion path. The protective gas expansion path in the protective gas device employs a double-tube set of an outer tube and an inner tube. The air outlet of the outer tube and the air outlet of the inner tube are oriented in opposite directions. This diffused structure of the air outlet of the outer tube serves to protect the back of the weld. Attached Figure Description

[0018] Figure 1 This is an isometric view of the structure of this utility model;

[0019] Figure 2 This is a left view of the structure of this utility model;

[0020] Figure 3 This is a front sectional view of the protective gas device in this utility model;

[0021] Figure 4 for Figure 3 Cross-sectional view at point A.

[0022] In the diagram: 1-Guide assembly, 11-Limiter, 12-Guide rod, 13-Guide support plate;

[0023] 2-Displacement assembly, 21-Rack, 22-Rack support frame, 23-Displacement pulley, 24-Bracket;

[0024] 3-Drive assembly, 31-Drive gear, 32-Bearing housing, 33-Drive gear shaft, 34-Bearing housing support plate, 35-Drive connecting plate;

[0025] 4-Protective gas device, 41-Air inlet, 42-Outer pipe, 43-Inner pipe, 44-Groove, 45-Air outlet, 46-Support wall;

[0026] 5-Coupling, 6-Frequency control motor. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 This utility model provides a technical solution: a longitudinal seam welding transmission mechanism with a back protection device, including a guide assembly 1, a displacement assembly 2, a drive assembly 3, a protective gas device 4, and a frequency-modulated motor 6.

[0029] The guide assembly 1 is slidably connected to the displacement assembly 2, the top surface of the displacement assembly 2 is connected to the drive assembly 3, the side wall of the displacement assembly 2 is connected to the protective gas device 4, the frequency modulation motor 6 includes a fixed end and a drive end, the fixed end of the frequency modulation motor 6 is connected to the external frame, and the drive end of the frequency modulation motor 6 is connected to the drive assembly 3.

[0030] The protective gas device 4 includes an air inlet 41, an outer tube 42, and an inner tube 43. The air inlet 41 is provided at the bottom of the outer wall of the outer tube 42, and the inner tube 43 is provided in the inner cavity of the outer tube 42. The air inlet 41 is connected to the inner tube 43. Multiple air holes are evenly opened at the bottom of the outer wall of the inner tube 43. A groove 44 is provided at the top of the outer wall of the outer tube 42. Multiple air outlets 45 are evenly opened at the bottom surface of the groove 44 along the axial direction of the outer tube 42.

[0031] Furthermore, a support wall 46 is fixedly provided in the inner cavity of the outer tube 42, one end of the inner tube 43 is embedded in the side wall of the support wall 46, and the end of the air inlet 41 connected to the outer tube 42 is embedded in the support wall 46.

[0032] Furthermore, the guide assembly 1 includes a guide rod 12, two guide support plates 13 and a slide rail 14, with the guide rod 12 and the slide rail 14 disposed between the two guide support plates 13, and the displacement assembly 2 slidably connected to the guide rod 12.

[0033] Furthermore, the guide assembly 1 also includes a limiter 11, which is provided on one side wall of the guide support plate 13 where the guide rod 12 is located, and the limiter 11 is electrically connected to the frequency modulation motor 6.

[0034] Furthermore, the displacement assembly 2 includes a rack 21, a rack support frame 22, a displacement pulley 23, and a bracket 24.

[0035] The rack support frame 22 is slidably connected to the guide rod 12, the displacement pulley 23 is slidably connected to the slide rail 14, the bottom of the rack support frame 22 is rotatably connected to the displacement pulley 23, the side wall of the rack support frame 22 is connected to the bracket 24, the protective gas device 4 is connected to the bracket 24, and the rack 21 is fixedly connected to the top surface of the rack support frame 22. During welding, the linear reciprocating motion generates no electrical sparks. The displacement pulley 23 is made of nylon for insulation purposes.

[0036] The bracket 24 is fixed with connecting rods in different directions, and a U-shaped handle structure is provided on the top of the bracket 24. The rack 21 converts the rotational motion into linear motion. When the displacement assembly 2 contacts the limit switch 11 on the guide assembly 1, a power-off signal is output, and the motor stops running.

[0037] The drive wheel assembly 3 includes a drive gear 31, which meshes with the rack 21.

[0038] Furthermore, the drive wheel assembly 3 also includes a bearing housing 32, a drive gear shaft 33, a bearing housing support plate 34, and a drive connecting plate 35. The drive connecting plate 35 is connected to the side wall of the slide rail 14, the bearing housing support plate 34 is connected to the side wall of the drive connecting plate 35, the top surface of the bearing housing support plate 34 is connected to the bearing housing 32, the drive gear shaft 33 is rotatably connected to the bearing housing 32, one end of the drive gear shaft 33 passes through the bearing housing 32 and is connected to the drive gear 31, and the other end of the drive gear shaft 33 is connected to the drive end of the frequency-modulated motor 6 via a coupling 5. A deep groove ball bearing is used inside the bearing housing 32.

[0039] Working principle:

[0040] The frequency-modulated motor 6 drives the drive gear 31 through the coupling 5. The drive gear 31 meshes with the rack 21, converting the rotational motion of the prior art into linear motion. When the displacement assembly 2 contacts the limiter 11 on the guide assembly 1, a power-off signal is output, and the frequency-modulated motor 6 stops operating. The protective gas expansion path designed in the protective gas device 4 adopts a double-tube set of the outer tube 42 and the inner tube 43. The direction of the air outlet 45 at the top of the outer tube 42 is opposite to the direction of the air outlet of the inner tube 43, and the air outlet 45 at the top of the outer tube 42 diffuses. The protective gas descends in the inner tube 43. The inner wall of the outer tube 42 is arc-shaped. This design allows the protective gas to diffuse out of the air outlet 45 on the top surface of the outer tube 42 after being diffused by the arc-shaped sidewall. Then, the protective gas diffuses through the air outlet 45 and the groove 44, increasing the protective area. The protective gas expansion path inside the protective gas device 4 can protect the back of the weld from oxidation, and the stable gas flow does not affect the arc and metal fusion.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A longitudinal seam welding transmission mechanism with a back protection device, characterized in that, It includes a guide assembly (1), a displacement assembly (2), a drive assembly (3), a protective gas device (4), and a frequency-modulated motor (6); The guide assembly (1) is slidably connected to the displacement assembly (2); the top surface of the displacement assembly (2) is connected to the drive assembly (3); the side wall of the displacement assembly (2) is connected to the protective gas device (4); the frequency modulation motor (6) includes a fixed end and a drive end; the fixed end of the frequency modulation motor (6) is connected to the external frame; the drive end of the frequency modulation motor (6) is connected to the drive assembly (3); The protective gas device (4) includes an air inlet (41), an outer tube (42), and an inner tube (43); the air inlet (41) is provided at the bottom of the outer wall of the outer tube (42); the inner tube (43) is provided in the inner cavity of the outer tube (42); the air inlet (41) is connected to the inner tube (43); a plurality of air holes are evenly provided at the bottom of the outer wall of the inner tube (43); a groove (44) is provided at the top of the outer wall of the outer tube (42); a plurality of air outlets (45) are evenly provided on the bottom surface of the groove (44) along the axial direction of the outer tube (42).

2. The longitudinal seam welding transmission mechanism with a back protection device according to claim 1, characterized in that, A support wall (46) is fixedly provided in the inner cavity of the outer tube (42); one end of the inner tube (43) is embedded in the side wall of the support wall (46); the air inlet (41) is connected to one end of the outer tube (42) and embedded in the support wall (46).

3. The longitudinal seam welding transmission mechanism with a back protection device according to claim 1, characterized in that, The guide assembly (1) includes a guide rod (12), two guide support plates (13) and a slide rail (14); the guide rod (12) and the slide rail (14) are provided between the two guide support plates (13); the displacement assembly (2) is slidably connected to the guide rod (12).

4. The longitudinal seam welding transmission mechanism with a back protection device according to claim 3, characterized in that, The guide assembly (1) also includes a limiter (11); the guide support plate (13) is provided with the limiter (11) on one side wall of the guide rod (12); the limiter (11) is electrically connected to the frequency-modulated motor (6).

5. The longitudinal seam welding transmission mechanism with a back protection device according to claim 3, characterized in that, The displacement assembly (2) includes a rack (21), a rack support frame (22), a displacement pulley (23), and a bracket (24). The rack support frame (22) is slidably connected to the guide rod (12); the displacement pulley (23) is slidably connected to the slide rail (14); the bottom of the rack support frame (22) is rotatably connected to the displacement pulley (23); the side wall of the rack support frame (22) is connected to the bracket (24); the protective gas device (4) is connected to the bracket (24); the rack (21) is fixedly connected to the top surface of the rack support frame (22); The drive assembly (3) includes a drive gear (31); the drive gear (31) meshes with the rack (21).

6. The longitudinal seam welding transmission mechanism with a back protection device according to claim 5, characterized in that, The drive assembly (3) further includes a bearing housing (32), a drive gear shaft (33), a bearing housing support plate (34), and a drive connecting plate (35); the drive connecting plate (35) is connected to the side wall of the slide rail (14); the bearing housing support plate (34) is connected to the side wall of the drive connecting plate (35); the top surface of the bearing housing support plate (34) is connected to the bearing housing (32); the drive gear shaft (33) is rotatably connected to the bearing housing (32); one end of the drive gear shaft (33) passes through the bearing housing (32) and is connected to the drive gear (31); the other end of the drive gear shaft (33) is connected to the drive end of the frequency-modulated motor (6) through a coupling (5).

Images