An automatic welding fixture for motor fuel injection pipes

Abstract

This utility model relates to the field of motor fuel injection pipe processing technology, and discloses an automatic welding fixture for motor fuel injection pipes, including a base, a vertical plate and a positioning cylinder fixedly mounted on the top of the base; a welding table fixedly mounted on the vertical plate, and a connecting plate placed on the top of the welding table; a vertically positioned positioning rod fixedly mounted on the top of the welding table, and a positioning slot opened at the end of the welding table away from the vertical plate; the fuel injection pipe passes through the positioning slot, and the connecting plate, positioning rod and fuel injection pipe all pass through the connecting plate; a slider is slidably mounted on the upper limit of the vertical plate, a vertically positioned pressure rod is fixedly mounted on the slider, and an abutment plug is fixedly mounted on the pressure rod; the pressure rod abuts against the connecting plate, and the abutment plug abuts against the top end of the fuel injection pipe; a mounting seat is fixedly mounted on the top of the base, and a horizontal limiting rod is slidably mounted on the mounting seat, the limiting rod is inserted into and limited in fit with the fuel injection hole on the fuel injection pipe body; the limiting rod and the slider are driven in fit through a transmission mechanism. This utility model has a simple clamping and fixing process, is convenient to use, and has high processing and production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of motor fuel injection pipe processing technology, and in particular to an automatic welding fixture for motor fuel injection pipes. Background Technology

[0002] Currently, electric motors in new energy vehicles use oil cooling for heat dissipation. Common oil cooling methods involve directly spraying oil into the cooling area through perforated oil pipes or channels. Existing oil pipe systems typically consist of two ring pipes and three or more straight pipes. Each straight pipe is located between and connected to two ring pipes, with both ring pipes fitted over the rotor assembly. The straight pipes are generally connected to the motor housing via perforated connecting plates, which are typically welded to the straight pipes.

[0003] Based on the above technical features, the problem is that in the existing technology, two relatively independent sets of clamps are required to fix the straight pipe and the perforated connecting piece respectively. The clamping and fixing process is relatively complicated, the process is cumbersome, it is inconvenient to use, the processing efficiency is low, and the production efficiency is not high.

[0004] Therefore, it is necessary to solve the above problems by using an automatic welding fixture for motor fuel injection pipes. Utility Model Content

[0005] The purpose of this utility model is to provide an automatic welding fixture for motor fuel injection pipes to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic welding fixture for motor fuel injection pipes, including a base, a vertical plate and a positioning cylinder for positioning the electrolytic fuel injection pipe insertion are fixedly installed on the top of the base, and the opening of the positioning cylinder faces upward; A horizontal welding platform is fixedly installed on the upright plate, and a connecting plate with two perforations is placed on top of the welding platform; The top of the welding table is fixed with a vertical positioning rod, and the end of the welding table away from the vertical plate is provided with a positioning slot. The fuel injection pipe passes through the positioning slot and one of the holes in the connecting plate, and the positioning rod passes through the other hole in the connecting plate; The upper limit of the upright plate is slidably mounted with a slider, and a vertical pressure rod is fixed on the slider. An abutment plug is fixedly provided on the pressure rod. The pressure rod abuts against the connecting plate, and the abutting plug abuts against the top of the fuel injection pipe; A mounting base is fixedly installed on the top of the base, and a horizontal limiting rod is slidably installed on the mounting base. The limiting rod is arranged radially along the fuel injection pipe and is inserted into and limited by the fuel injection hole on the fuel injection pipe body. The limiting rod and the slider are connected by a transmission mechanism.

[0007] Preferably, the transmission mechanism includes a rotating shaft, a first driving component, and a second driving component; the rotating shaft is vertically positioned and its bottom end is rotatably connected to the base; the rotating shaft is driven by a limiting rod through the first driving component, and the slider is driven by the rotating shaft through the second driving component.

[0008] Preferably, the first driving assembly includes a vertically positioned push rod and a horizontal transmission plate; the push rod is fixedly connected to a limiting rod, and the transmission plate is fixedly connected to a rotating shaft; a transmission groove is formed on the transmission plate in the vertical direction, and the push rod passes into the transmission groove and abuts against the transmission plate for transmission engagement.

[0009] Preferably, the second drive assembly includes a vertically placed threaded rod; a groove is provided on the upright plate, the slider is located in the groove and is limited and slidably engaged with the groove, and the threaded rod is rotatably installed in the groove; the threaded rod passes through the slider and is threadedly connected to the slider; the threaded rod extends upward through the upright plate and is rotatably connected to the upright plate; a second gear is coaxially fixed at the top end of the threaded rod, and a first gear is coaxially fixed at the top end of the rotating shaft; the first gear and the second gear mesh with each other.

[0010] Preferably, a reference plate with a reference spray hole is fixedly provided on the upright plate, and the reference plate has a reference hole.

[0011] Preferably, the rotating shaft passes through the control plate and is rotatably connected to the control plate.

[0012] Preferably, an extension plate is fixedly provided at the top of the upright plate, and a vertical shaft is fixed at the bottom of the extension plate; the vertical shaft is inserted downward into the pressure rod, and the pressure rod and the vertical shaft are in a limiting sliding fit.

[0013] Preferably, a connecting rod is fixedly provided at the top end of the pressure rod, and the abutting plug is fixedly connected to the connecting rod.

[0014] Preferably, a displacement sensor is fixedly installed on the inner wall of the bottom of the chute, and an error light is fixedly installed on the outer plate; a microcomputer is fixedly installed on the vertical plate, and the displacement sensor and the error light are both electrically connected to the microcomputer.

[0015] The technical effects and advantages of this utility model are as follows: This utility model sets an abutment plug on the pressure rod, thereby integrating the pressure rod clamping connecting plate and the abutment plug clamping the oil injection pipe. The process is simple, convenient to use, and has high processing and production efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is an enlarged schematic diagram of section A of this utility model; Figure 3 This is a partial three-dimensional schematic diagram of the present invention; Figure 4 This is a partial cross-sectional view of the present invention; Figure 5 This is a schematic diagram of the internal structure of the welding station of this utility model; Figure 6 This is a schematic diagram of the positioning cylinder of this utility model.

[0017] In the diagram: 1. Base; 2. Mounting seat; 3. Limiting rod; 4. Fuel injection pipe; 5. Welding table; 6. Reference plate; 7. Abutment plug; 8. Pressure rod; 9. Rotating shaft; 10. First gear; 11. Second gear; 12. Error indicator light; 13. Vertical plate; 14. Threaded rod; 15. Positioning cylinder; 16. Push rod; 17. Transmission plate; 18. Displacement sensor; 19. Positioning rod. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] This utility model provides, for example Figures 1 to 6 The automatic welding fixture for motor fuel injection pipes shown includes a base 1. A vertical plate 13 and a positioning cylinder 15 for inserting and positioning the motor fuel injection pipe 4 are fixedly mounted on the top of the base 1. The opening of the positioning cylinder 15 faces upwards, and the fuel injection pipe 4 is coaxially inserted into the positioning cylinder 15. It should be noted that this embodiment is only used for processing one type and specification of fuel injection pipe 4.

[0020] A horizontal welding table 5 is fixedly installed on the upright plate 13, and a connecting plate with two perforations is placed on the top of the welding table 5.

[0021] A vertically positioned positioning rod 19 is fixedly installed on the top of the welding table 5. A positioning slot is formed at the end of the welding table 5 away from the vertical plate 13. The positioning slot is aligned vertically with the positioning cylinder 15. The oil spray pipe 4 passes through the positioning slot and one of the holes in the connecting plate. The positioning rod 19 passes through the other hole in the connecting plate.

[0022] A horizontal groove is formed on the vertical plate 13, and a slider is slidably installed within the groove. A vertical pressure rod 8 is fixedly installed at the end of the slider away from the vertical plate 13. The bottom end of the pressure rod 8 abuts against the connecting plate.

[0023] The bottom end of the pressure rod 8 is provided with a downward-facing relief groove, and the positioning rod 19 is inserted into the relief groove.

[0024] A connecting rod is fixedly installed at the top of the pressure rod 8. The connecting rod consists of a horizontal bar and a vertical bar. The horizontal bar is fixedly connected to the pressure rod 8, and the vertical bar is fixed to the end of the horizontal bar away from the pressure rod 8. An abutment plug 7 is fixedly installed at the bottom of the vertical bar, and the abutment plug 7 abuts against the top of the fuel injection pipe 4.

[0025] An extension plate is fixedly installed at the top of the vertical plate 13, and a vertical shaft is fixedly installed at the bottom of the extension plate. The vertical shaft is inserted downward into the pressure rod 8, and the pressure rod 8 and the vertical shaft are in a limiting sliding fit.

[0026] Two types of injection holes are provided on the injection pipe 4. Both types of injection holes are arranged radially along the injection pipe 4. One type is a single hole, and the other type is a double hole.

[0027] Two mounting bases 2 are fixedly installed on the top of the base 1. A horizontal limiting rod 3 is slidably installed on each of the two mounting bases 2. The two limiting rods 3 are arranged radially along the fuel injection pipe 4. The two limiting rods 3 correspond one-to-one with the two fuel injection holes of the double-hole system, and each limiting rod 3 is inserted and limited in fit with the corresponding fuel injection hole.

[0028] Each mounting base 2 is fixedly mounted with a cylinder, and each limit rod 3 is fixedly connected to the telescopic shaft of the cylinder on the mounting base 2.

[0029] A reference plate 6 for comparing with the single hole is fixedly installed on the upright plate 13. The reference plate 6 has a reference hole for comparing with the oil injection hole of the single hole.

[0030] Both limiting rods 3 slide radially along the fuel injection pipe 4, and one of the limiting rods 3 is connected to the slider through a transmission mechanism.

[0031] Specifically, the transmission mechanism includes a rotating shaft 9, a first drive assembly, and a second drive assembly. The rotating shaft 9 is vertically positioned and its bottom end is rotatably connected to the base 1. The rotating shaft 9 passes through the reference plate 6 and is rotatably connected to the reference plate 6. The rotating shaft 9 is in transmission engagement with the limiting rod 3 through the first drive assembly, and the slider is in transmission engagement with the rotating shaft 9 through the second drive assembly.

[0032] The first drive assembly includes a vertically positioned push rod 16 and a horizontal transmission plate 17. The push rod 16 is fixedly connected to the limiting rod 3, and the transmission plate 17 is fixedly connected to the rotating shaft 9. A transmission groove is formed on the transmission plate 17 in the vertical direction, and the transmission groove extends radially along the rotating shaft 9. The push rod 16 passes into the transmission groove and abuts against the transmission plate 17 for transmission engagement.

[0033] The second drive assembly includes a vertically positioned threaded rod 14. The threaded rod 14 passes through a groove and its bottom end is rotatably connected to the bottom inner wall of the groove. The threaded rod 14 passes through a slider and is threadedly connected to the slider.

[0034] The top end of the threaded rod 14 is a smooth rod, which extends upward through the vertical plate 13 and is rotatably connected to the vertical plate 13. The top end of the threaded rod 14 is coaxially and fixedly connected to the second gear 11, and the top end of the rotating shaft 9 is coaxially and fixedly connected to the first gear 10. The first gear 10 and the second gear 11 are meshed.

[0035] A displacement sensor 18 is fixedly installed on the inner wall of the bottom of the chute, and an error light 12 is fixedly installed on the outer extension plate. A microcomputer is fixedly installed on the vertical plate 13, and the two cylinders, displacement sensor 18 and error light 12 are all electrically connected to the microcomputer.

[0036] Working principle: When using this automatic welding fixture to weld the oil injection pipe 4 and the connecting plate of the motor, the oil injection pipe 4 is inserted into the positioning cylinder 15. Then, the connecting plate is fitted onto the oil injection pipe 4 and the positioning rod 19, so that the oil injection pipe 4 and the positioning rod 19 each have a through hole.

[0037] Next, rotate the fuel injection pipe 4 to align the two fuel injection holes of the double-hole system with the corresponding limiting rods 3. After alignment, start the two cylinders via the microcomputer. The telescopic shafts of the two cylinders push the connected limiting rods 3 into the aligned fuel injection holes. During this process, the push rod 16, along with the limiting rod 3, pushes the transmission plate 17 to rotate around the rotating shaft 9, and the transmission plate 17 drives the rotating shaft 9 to rotate. The rotating shaft 9 drives the first gear 10 to rotate, and the first gear 10 drives the second gear 11 to rotate. The second gear 11 drives the threaded rod 14 to rotate, and the threaded rod 14 pushes the slider to slide down the slide groove. The slider drives the pressure rod 8 to move down and finally press against the connecting plate. At the same time, the pressure rod 8 drives the connecting rod to move down, and the connecting rod drives the abutment plug 7 to move down and finally press against the fuel injection pipe 4.

[0038] As the slider moves down the slide, the displacement sensor 18 measures the slider's displacement in real time. If the slider's displacement deviates from the set value, the microcomputer-controlled error light 12 flashes to remind the worker that they have picked up the wrong model or size of the fuel injector pipe 4, facilitating timely replacement.

[0039] Next, the welding robot welds the connecting plate and the fuel injection pipe 4. After welding is completed, the telescopic shafts of the two cylinders retract and drive the corresponding limit rods 3 to disengage from the fuel injection pipe 4. During this process, the push rod 16 pushes the transmission plate 17 to rotate in the opposite direction around the rotating shaft 9. The transmission plate 17 drives the rotating shaft 9 to rotate in the opposite direction, and the rotating shaft 9 drives the threaded rod 14 to rotate in the opposite direction through the first gear 10 and the second gear 11. The threaded rod 14 drives the push slider to slide upward, and the slider drives the pressure rod 8 to move upward and finally disengage from the connecting plate. The pressure rod 8 drives the connecting rod to move upward, and the connecting rod drives the abutment plug 7 to move upward and finally disengage from the fuel injection pipe 4.

[0040] Finally, after the connecting plate and fuel injection pipe 4 have cooled down, remove the connecting plate and fuel injection pipe 4.

[0041] To facilitate the simultaneous processing of fuel injection pipes 4 of different models and specifications, multiple components can be installed on the base 1.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic welding fixture for motor fuel injection pipes, comprising a base (1), characterized in that: The top of the base (1) is fixedly provided with a vertical plate (13) and a positioning cylinder (15) for the insertion and positioning of the motor oil injection pipe (4), with the opening of the positioning cylinder (15) facing upward. A horizontal welding table (5) is fixedly installed on the upright plate (13), and a connecting plate with two perforations is placed on the top of the welding table (5). The top of the welding table (5) is fixed with a vertical positioning rod (19), and the end of the welding table (5) away from the vertical plate (13) is provided with a positioning groove. The oil injection pipe (4) passes through the positioning slot and one of the holes in the connecting plate, and the positioning rod (19) passes through the other hole in the connecting plate; The upper plate (13) is slidably mounted with a slider, and a vertical pressure rod (8) is fixed on the slider. An abutment plug (7) is fixed on the pressure rod (8). The pressure rod (8) abuts against the connecting plate, and the abutting plug (7) abuts against the top of the oil injection pipe (4); The top of the base (1) is fixedly provided with a mounting seat (2), and a horizontal limiting rod (3) is slidably installed on the mounting seat (2). The limiting rod (3) is arranged radially along the fuel injection pipe (4) and is inserted into and limited in cooperation with the fuel injection hole on the fuel injection pipe (4). The limiting rod (3) and the slider are driven by a transmission mechanism.

2. The automatic welding fixture for motor fuel injection pipes according to claim 1, characterized in that: The transmission mechanism includes a rotating shaft (9), a first driving component, and a second driving component; the rotating shaft (9) is vertical and its bottom end is rotatably connected to the base (1); the rotating shaft (9) is driven by the first driving component and the limiting rod (3), and the slider is driven by the second driving component and the rotating shaft (9).

3. The automatic welding fixture for motor fuel injection pipes according to claim 2, characterized in that: The first drive assembly includes a vertically placed push rod (16) and a horizontal transmission plate (17); the push rod (16) is fixedly connected to the limiting rod (3), and the transmission plate (17) is fixedly connected to the rotating shaft (9); a transmission groove is opened on the transmission plate (17) along the vertical direction, and the push rod (16) passes into the transmission groove and abuts against the transmission plate (17) for transmission cooperation.

4. The automatic welding fixture for motor fuel injection pipes according to claim 2, characterized in that: The second drive assembly includes a vertically placed threaded rod (14); a sliding groove is provided on the upright plate (13), the slider is located in the sliding groove and is limited and slidably engaged with the sliding groove, and the threaded rod (14) is rotatably installed in the sliding groove; the threaded rod (14) passes through the slider and is threadedly connected to the slider; the threaded rod (14) extends upward through the upright plate (13) and is rotatably connected to the upright plate (13); the top end of the threaded rod (14) is coaxially fixed with a second gear (11), and the top end of the rotating shaft (9) is coaxially fixed with a first gear (10); the first gear (10) meshes with the second gear (11).

5. The automatic welding fixture for motor fuel injection pipes according to claim 2, characterized in that: The upright plate (13) is fixedly provided with a reference plate (6) for reference oil injection holes, and the reference plate (6) is provided with reference holes.

6. The automatic welding fixture for motor fuel injection pipes according to claim 5, characterized in that: The rotating shaft (9) passes through the control plate (6) and is rotatably connected to the control plate (6).

7. The automatic welding fixture for motor fuel injection pipes according to claim 4, characterized in that: An extension plate is fixedly installed at the top of the vertical plate (13), and a vertical shaft is fixed at the bottom of the extension plate; the vertical shaft is inserted downward into the pressure rod (8), and the pressure rod (8) is in a limiting sliding fit with the vertical shaft.

8. The automatic welding fixture for motor fuel injection pipes according to claim 1, characterized in that: A connecting rod is fixedly installed at the top of the pressure rod (8), and the abutting plug (7) is fixedly connected to the connecting rod.

9. The automatic welding fixture for motor fuel injection pipes according to claim 7, characterized in that: A displacement sensor (18) is fixedly installed on the bottom inner wall of the chute, and an error light (12) is fixedly installed on the outer plate; a microcomputer is fixedly installed on the vertical plate (13), and the displacement sensor (18) and the error light (12) are both connected to the microcomputer.

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