One-piece exhaust pipe gasket welding tool
By designing a joint exhaust pipe gasket welding tool including the fixture body, drive front end and tail seat, the problems of poor welding accuracy and unstable quality are solved, and an efficient and accurate welding process is achieved.
Patent Information
- Application Number
- CN202421430596.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-06-21
AI Technical Summary
During the welding process, poor welding accuracy and unstable welding quality lead to problems such as deviating from the predetermined position after welding of the joint exhaust pipe.
A joint exhaust pipe gasket welding tool is designed, including the fixture main body, drive front end and tail seat. By driving the cylinder, the central axis is driven, combined with the gear rack structure and deep groove ball bearing and other components, high-precision welding positioning and clamping are achieved.
It improves welding accuracy and quality, reduces labor intensity, improves welding efficiency, and facilitates automatic debugging of welding equipment.
Smart Images
Figure CN222790984U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of welding tooling and relates to a welding tooling for a connected exhaust pipe gasket. Background Art
[0002] The one-piece exhaust pipe for automobiles has the advantage of being easy to install, but it requires the exhaust pipe to be connected to the gasket in advance. The existing gaskets have the following problems during welding: the gasket deviates from the predetermined position due to thermal deformation at the weld after welding; the gasket deviates after welding due to inaccurate fixture positioning; the molten pool position at the welding point deviates from the predetermined position after welding due to thermal deformation and welding stress (different molten pool positions lead to different gasket deviation states after welding).
[0003] Based on the above points, in order for this connected scheduling pipe to meet the qualified requirements after welding, high-precision welding fixtures and stable welding equipment (robotic automatic welding equipment) are necessary. Summary of the invention
[0004] The utility model aims to provide a one-piece exhaust pipe gasket welding tool, which can solve the problems of poor welding accuracy and unstable welding quality and improve welding efficiency.
[0005] According to the technical solution provided by the utility model: a one-piece exhaust pipe gasket welding tool comprises a fixture body, a driving front end and a tailstock are installed at both ends of the fixture body, the driving front end comprises a driving bracket and an electric slip ring, a central shaft is rotatably installed in the driving bracket, and the central shaft is driven by a driving cylinder; the fixed end of the electric slip ring is fixedly connected to the driving bracket through an electric slip ring fixing rod, and the rotating end of the electric slip ring is installed at the outer end of the central shaft through an electric slip ring connecting block, and the central shaft and the electric slip ring are coaxially arranged; the inner end of the central shaft is sequentially installed with a front end connecting disk and a front end cross arm; the tailstock comprises a tailstock bracket, a tailstock central shaft is rotatably installed on the tailstock bracket, and a tailstock connecting disk and a tailstock cross arm are sequentially installed at the inner end of the tailstock central shaft; the fixture body comprises a fixture main board, and a one-piece exhaust pipe positioning mechanism and a one-piece exhaust pipe clamping mechanism are provided on the fixture main board.
[0006] As a further improvement of the utility model, the driving cylinder drives the central shaft to rotate through a gear rack structure; the driving cylinder is installed on the driving bracket through a cylinder bracket, and the piston end of the driving cylinder is connected to the rack through a cylinder connecting head and a connecting block. At the same time, the rack is slidably connected to the driving bracket through a linear slide rail, and a gear is sleeved on the central shaft, and the gear is meshed with the rack.
[0007] As a further improvement of the utility model, the front and rear ends of the center shaft are installed on the drive bracket through deep groove ball bearings and cylindrical roller bearings; a first locking nut is installed at one end of the center shaft, and a shoulder is provided at the other end; the shoulder and the first locking nut respectively resist the deep groove ball bearing and the cylindrical roller bearing.
[0008] As a further improvement of the utility model, a bearing seat is installed on the tailstock bracket, and the tailstock center shaft is rotatably installed in the bearing seat; a shoulder is provided at the front end of the tailstock center shaft, and a bearing retaining ring and a second locking nut are sleeved on the outer end of the tailstock center shaft, and the shoulder of the tailstock center shaft and the bearing retaining ring respectively abut against both sides of the bearing seat.
[0009] As a further improvement of the utility model, a protective cover is installed on the outer periphery of the driving bracket.
[0010] As a further improvement of the utility model, the one-piece exhaust pipe positioning mechanism includes a tube sheet positioning pin; the tube sheet positioning pin is installed on the fixture main board, and a matching tube sheet positioning pin hole is provided on the exhaust pipe.
[0011] As a further improvement of the utility model, a guide groove is provided on the outer periphery of the tube plate locating pin, and the guide groove is surrounded by a plurality of guide blocks.
[0012] As a further improvement of the utility model, the one-piece exhaust pipe clamping mechanism includes a pressure plate assembly, an angular cylinder, and a linear cylinder; proximity sensors are provided on the sides of the angular cylinder and the linear cylinder, and the proximity sensors are powered by an electric slip ring.
[0013] The positive effects of this application are:
[0014] The utility model reduces labor intensity and improves welding efficiency; the fixture is accurately positioned and the welding qualification rate of the workpiece is improved; and the flip structure facilitates the debugging of the automated welding equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of the utility model.
[0016] Figure 2 This is a schematic diagram of the structure of the utility model with the upper exhaust pipe installed.
[0017] Figure 3 for Figure 2 EE cross-sectional view in.
[0018] Figure 4 This is a schematic diagram of the structure of the utility model when working with a welding robot.
[0019] Figure 1-Figure 4 It includes a buffer 1, a buffer bracket 2, a rack 3, a gear 4, a drive cylinder 5, a cylinder bracket 6, a linear guide rail 7, a cylinder connector 8, a connecting block 9, an electric slip ring 10, an electric slip ring fixing rod 11, an electric slip ring connecting block 12, a first locking nut 13, a deep groove ball bearing 14, a center shaft 15, a cylindrical roller bearing 16, a drive bracket 19, a protective cover 37, etc. DETAILED DESCRIPTION
[0020] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0021] In order to enable those skilled in the art to better understand the solution of the utility model, the following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.
[0022] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the utility model described herein. In addition, similar terms such as "including" and "having" mean that in addition to those contents already listed in "including" and "having", other contents that have not been listed can also be "included" and "having"; for example, a process, method, system, product or device that can include a series of steps or units is not necessarily limited to those steps or units that have been clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.
[0023] Due to the angle of the drawing, some components may not be drawn, but their positions and connection relationships can be partially understood based on the text expression.
[0024] like Figure 1 As shown, the utility model is a one-piece exhaust pipe gasket welding tool, comprising a fixture body, and a driving front end and a tail seat are installed at both ends of the fixture body.
[0025] like Figure 2-Figure 3 As shown, the driving front end includes a driving bracket 19 and an electric slip ring 10 . A central shaft 15 is rotatably installed in the driving bracket 19 , and the central shaft 15 is driven by a driving cylinder 5 .
[0026] The driving cylinder 5 drives the central shaft 15 to rotate through the gear rack structure. The driving cylinder 5 is installed on the driving bracket 19 through the cylinder bracket 6. The piston end of the driving cylinder 5 is connected to the rack 3 through the cylinder connector 8 and the connecting block 9. At the same time, the rack 3 is slidably connected to the driving bracket 19 through the linear slide rail 7. The central shaft 15 is sleeved with a gear 4, and the gear 4 is meshed with the rack 3.
[0027] The front and rear ends of the central shaft 15 are mounted on the driving bracket 19 through the deep groove ball bearing 1 and the cylindrical roller bearing 16. The first locking nut 13 is installed at one end of the central shaft 15, and a shaft shoulder is provided at the other end. The shaft shoulder and the first locking nut 13 respectively press against the deep groove ball bearing 1 and the cylindrical roller bearing 16 to reduce the axial movement of the central shaft 15 when it rotates.
[0028] The fixed end of the slip ring 10 is fixedly connected to the driving bracket 19 through the slip ring fixing rod 11, and the rotating end of the slip ring 10 is installed on the outer end of the central shaft 15 through the slip ring connecting block 12. The central shaft 15 is coaxially arranged with the slip ring 10. The front end connecting plate 22-1 and the front end cross arm 23-1 are installed in sequence on the inner end of the central shaft 15.
[0029] like Figure 2 As shown, the tailstock includes a tailstock bracket 31, on which a tailstock central shaft 34 is rotatably mounted, and an inner end of the tailstock central shaft 34 is sequentially mounted with a tailstock connecting plate and a tailstock cross arm.
[0030] Specifically, a bearing seat 32 is installed on the tailstock bracket 31, and a tailstock center shaft 34 is rotatably installed in the bearing seat 32. A shaft shoulder is provided at the front end of the tailstock center shaft 34, and a bearing retaining ring 33 and a second locking nut 35 are sleeved on the outer end of the tailstock center shaft 34. The shaft shoulder of the tailstock center shaft 34 and the bearing retaining ring 33 respectively abut against both sides of the bearing seat 32 to prevent the tailstock center shaft 34 from axial movement.
[0031] In order to prevent dust from entering the front end of the drive, a protective cover 37 is installed on the periphery of the drive bracket 19 to wrap the cylinder, gear rack and other components.
[0032] The clamp body comprises a clamp main plate 26 , on which a one-piece exhaust pipe positioning mechanism and a one-piece exhaust pipe clamping mechanism are provided.
[0033] The one-piece exhaust pipe positioning mechanism includes a tube sheet positioning pin, which is mounted on the fixture main board 26, and an adapted tube sheet positioning pin hole is provided on the exhaust pipe 38.
[0034] In order to quickly complete the positioning of the exhaust pipe 38 and the fixture main board 26, a guide groove is provided on the periphery of the tube plate positioning pin, and the guide groove is surrounded by a plurality of guide blocks 17. In order to prevent scratches on the workpiece, the guide blocks 17 are made of nylon.
[0035] The exhaust pipe 38 and the gasket are provided with pipe gasket pin holes. The gasket is placed at the corresponding position on the exhaust pipe 38, and the pipe gasket positioning pin 36 is inserted to complete the positioning of the exhaust pipe 38 and the gasket.
[0036] The one-piece exhaust pipe clamping mechanism includes a pressure plate assembly 18, an angle cylinder 25, and a linear cylinder 30. A proximity sensor 27 is provided on the side of the angle cylinder 25 and the linear cylinder 30. The proximity sensor 27 is powered by an electric slip ring 10. When the clamp body is turned over, the electric slip ring 10 rotates with it and causes a winding problem.
[0037] The proximity sensor 27 is connected to the fixture main board 26 via a sensor bracket 28 .
[0038] The air pipe of the angle cylinder 25 is made of steel pipe to prevent it from being dangerous during welding.
[0039] In order to limit the turning angle of the clamp main board 26, a turning limit block 21 is installed on the clamp main board 26, and the buffer 1 is installed on the driving bracket 19 through the buffer bracket 2. The buffer 1 contacts the turning limit block 21 when the clamp main board 26 turns excessively.
[0040] The two ends of the fixture main board 26 are respectively connected to the front cross arm 23 - 1 and the tailstock cross arm.
[0041] The driving front end and the tailstock are mounted on the base plate 20 .
[0042] The working process of the utility model is as follows:
[0043] like Figure 4 As shown, after the exhaust pipe 38 and the gasket are placed in place, the integrated exhaust pipe clamping mechanism fixes them. After the fixation is completed, the proximity sensor 27 starts the welding robot 39 to work.
[0044] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.
Claims
1. A one-piece exhaust pipe gasket welding tool, comprising a fixture body, with a driving front end and a tail seat installed at both ends of the fixture body, characterized in that: The driving front end comprises a driving bracket (19) and an electric slip ring (10), wherein a central shaft (15) is rotatably mounted in the driving bracket (19), and the central shaft (15) is driven by a driving cylinder (5); the fixed end of the electric slip ring (10) is fixedly connected to the driving bracket (19) via an electric slip ring fixing rod (11), and the rotating end of the electric slip ring (10) is mounted on the outer end of the central shaft (15) via an electric slip ring connecting block (12), and the central shaft (15) and the electric slip ring (10) are coaxially arranged; the inner end of the central shaft (15) is sequentially mounted with a front connecting disk (22-1) and a front cross arm (23-1); the tailstock comprises a tailstock bracket (31), wherein a tailstock central shaft (34) is rotatably mounted on the tailstock bracket (31), and a tailstock connecting disk and a tailstock cross arm are sequentially mounted on the inner end of the tailstock central shaft (34); the fixture body comprises a fixture main board (26), and the fixture main board (26) is provided with a conjoined exhaust pipe positioning mechanism and a conjoined exhaust pipe clamping mechanism.
2. The one-piece exhaust pipe gasket welding tool as claimed in claim 1, characterized in that: The driving cylinder (5) drives the central shaft (15) to rotate through a gear rack structure; the driving cylinder (5) is installed on a driving bracket (19) through a cylinder bracket (6); the piston end of the driving cylinder (5) is connected to the rack (3) through a cylinder connector (8) and a connecting block (9); the rack (3) is slidably connected to the driving bracket (19) through a linear slide rail (7); a gear (4) is sleeved on the central shaft (15), and the gear (4) is meshed with the rack (3).
3. The one-piece exhaust pipe gasket welding tool as claimed in claim 1, characterized in that: The front and rear ends of the central shaft (15) are mounted on a driving bracket (19) via deep groove ball bearings (1) and cylindrical roller bearings (16); a first locking nut (13) is mounted on one end of the central shaft (15), and a shaft shoulder is provided on the other end; the shaft shoulder and the first locking nut (13) respectively abut against the deep groove ball bearing (1) and the cylindrical roller bearing (16).
4. The one-piece exhaust pipe gasket welding tool as claimed in claim 1, characterized in that: A bearing seat (32) is mounted on a tailstock support (31), and a tailstock center shaft (34) is rotatably mounted in the bearing seat (32); a shaft shoulder is provided at the front end of the tailstock center shaft (34), a bearing retaining ring (33) and a second locking nut (35) are sleeved on the outer end of the tailstock center shaft (34), and the shaft shoulder of the tailstock center shaft (34) and the bearing retaining ring (33) respectively abut against two sides of the bearing seat (32).
5. The one-piece exhaust pipe gasket welding tool as claimed in claim 1, characterized in that: A protective cover (37) is installed on the outer periphery of the drive bracket (19).
6. The one-piece exhaust pipe gasket welding tool as claimed in claim 1, characterized in that: The integrated exhaust pipe positioning mechanism comprises a tube sheet positioning pin; the tube sheet positioning pin is mounted on the fixture main board (26), and a matching tube sheet positioning pin hole is provided on the exhaust pipe (38).
7. The one-piece exhaust pipe gasket welding tool as claimed in claim 6, characterized in that: A guide groove is provided on the outer periphery of the tube sheet positioning pin, and the guide groove is surrounded by a plurality of guide blocks (17).
8. The one-piece exhaust pipe gasket welding tool as claimed in claim 1, characterized in that: The one-piece exhaust pipe clamping mechanism comprises a pressure plate assembly (18), an angular cylinder (25), and a linear cylinder (30); a proximity sensor (27) is provided on the side of the angular cylinder (25) and the linear cylinder (30), and the proximity sensor (27) is powered by an electric slip ring (10).