Laser welding tool for electronic throttle valve body and sector gear

Abstract

The present invention discloses a laser welding tool for an electronic throttle valve body and sector gear, comprising a positioning and mounting mechanism, a clamping and rotating mechanism, and a base. The positioning and mounting mechanism comprises a fixture plate fixed to the base. The clamping and rotating mechanism comprises a clamping cylinder, a rotating cylinder, and a toothed belt. The clamping cylinder is fixed to the base, the rotating cylinder is arranged on the clamping cylinder, and the toothed belt is connected to the rotating cylinder. The present invention effectively completes the laser welding assembly of the electronic throttle valve body and sector gear assembly, ensures the laser welding quality of the electronic throttle valve sector gear assembly, improves the assembly stability, reduces the rate of throttle valve body sticking and jamming, and thus improves the product qualification rate. The tooling of the present invention can adjust the throttle valve disc from a small angle (0-0.3°) to a large angle (4-6°), reduces the angle jump when the valve disc angle is adjusted, and thus improves production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of electronic throttle body assembly equipment, in particular to an electronic throttle valve body and a sector gear laser welding tool. Background Art

[0002] Laser welding is a development trend in the connection of the sector gear of the electronic throttle body of automobiles. At present, major electronic throttle manufacturers in the world are competing to adopt laser welding gears to replace the traditional snap connection to improve the competitiveness of their products in the international market. The use of welding technology for gear connection can reduce the number of parts, improve the quality of gear connection, and reduce the manufacturing cost of the throttle. In order to realize the connection between the sector gear assembly of the electronic throttle body and the throttle shaft on the assembly line, the sector gear assembly must be correctly assembled and then its connection must be laser welded in real time. Figure 1 The figure shows a schematic diagram of the structure of the electronic throttle valve body and fan gear assembly. The existing technology cannot achieve small-angle adjustment of the electronic throttle valve body valve plate. Angle jump problems are likely to occur during small-angle welding. It is impossible to effectively control the idle flow of the electronic throttle valve body and ensure the consistency of the flow. Therefore, there is an urgent need for a laser welding tool that can be used for the electronic throttle valve body and fan gear. Summary of the Invention

[0003] The present invention provides a laser welding tool for an electronic throttle valve body and a sector gear, so as to solve the technical problems of inaccurate angle adjustment and easy angle jump during welding of the electronic throttle valve body and the sector gear, and inability to control the idle flow rate of the electronic throttle valve body.

[0004] In order to solve the above problems, the technical solution adopted by the present invention is:

[0005] A laser welding tool for an electronic throttle valve body and a sector gear includes a positioning and mounting mechanism, a rotating and clamping mechanism, and a base. The positioning and mounting mechanism includes a fixture plate, which is fixedly mounted on the base. The clamping and rotating mechanism includes a clamping cylinder, a rotating cylinder, and a toothed belt. The clamping cylinder is fixedly mounted on the base, and the rotating cylinder is arranged on the clamping cylinder. One end of the toothed belt is connected to the rotating cylinder, and the other end is connected to the combined rotating pressure head.

[0006] The rotary cylinder is connected to a horizontally arranged pulley, the upper portion of the combined rotary pressure head is connected to a horizontally arranged pulley, and the toothed belt connects the two pulleys.

[0007] The combined rotary pressing head comprises a rotary head A and a rotary head B. A special-shaped spring and a shifting rod are arranged inside the combined rotary pressing head. The shifting rod is arranged at the lower part of the rotary pressing head A.

[0008] A horizontal slide groove is formed between the rotating head A and the rotating head B. The rotating head A is provided with a vertical slide groove. The special-shaped spring can move in the horizontal slide groove and the vertical slide groove.

[0009] One end of the special-shaped spring is provided with a positioning support leg, and the other end is provided with a working support leg.

[0010] The rotary cylinder adopts a high-precision three-position swing cylinder. The middle position of the rotary cylinder is adjustable within a range of ±10°, and the swing angle of the rotary cylinder is adjustable within a range of 0-90° to any position.

[0011] The working legs of the special-shaped spring are φ1.8 quenched steel wires.

[0012] The rotating head A is provided with a special-shaped spring positioning hole.

[0013] Based on the above technical solution, the following technical effects can be produced:

[0014] 1. The rotation angle of the electronic throttle plate is controlled within the process requirements. The throttle plate of the valve body is adjusted to the required angle through the laser welding tooling, servo drive mechanism, displacement detection system, and valve position closing mechanism.

[0015] 2. This laser welding tool can achieve a small angle adjustment of 0-0.3° on the valve body of the electronic throttle valve.

[0016] 3. Through this laser welding tool, a small angle opening welding of 0-0.3° can be achieved with the valve closing position as the dynamic reference of 0°.

[0017] 4. This laser welding tool can avoid the angle jump problem that occurs during the welding process of the electronic throttle valve plate at a small opening angle of 0-0.3°.

[0018] 5. This laser welding tool can achieve the same valve opening angle welding, thereby effectively controlling the idle flow of the electronic throttle valve body and ensuring the consistency of the flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the electronic throttle valve body and sector gear assembly;

[0020] Figure 2 This is the front view of the laser welding tooling structure for the electronic throttle valve body and sector gear;

[0021] Figure 3 This is the left view of the laser welding fixture structure for the electronic throttle valve body and sector gear;

[0022] Figure 4 It is the side view of the structure of rotating head A and rotating head B;

[0023] Figure 5 It is a top view of the structure of rotating head A and rotating head B;

[0024] Figure 6 It is a schematic diagram of the structure of the special-shaped spring;

[0025] In the figure, 1-sector gear assembly, 2-throttle shaft, 3-idle spring, 4-throttle body, 5-base, 6-clamp plate, 7-toothed belt, 8-pressing cylinder, 9-rotating cylinder, 10-special-shaped spring, 11-rotating head A, 12-rotating head B, 13-shift lever, 14-horizontal slide, 15-vertical slide, 16-special-shaped spring positioning hole, 17-working support foot, 18-positioning support foot, 19-special-shaped spring angle. DETAILED DESCRIPTION

[0026] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0028] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] like Figure 1-6 As shown, a laser welding tool for an electronic throttle valve body and a sector gear includes a positioning and mounting mechanism, a rotating and clamping mechanism and a base 5. The positioning and mounting mechanism includes a clamping plate 6, and the clamping plate 6 is fixedly mounted on the base 5. The clamping and rotating mechanism includes a clamping cylinder 8, a rotating cylinder 9 and a toothed belt 7. The clamping cylinder 8 is fixedly mounted on the base 5, and the rotating cylinder 9 is arranged on the clamping cylinder 8. One end of the toothed belt 7 is connected to the rotating cylinder 9, and the other end is connected to the combined rotary pressure head.

[0031] The rotating cylinder 9 is connected to a horizontally arranged pulley, the upper portion of the combined rotating pressure head is connected to a horizontally arranged pulley, and the toothed belt 7 connects the two pulleys.

[0032] The combined rotary pressing head includes a rotary head A11 and a rotary head B12. A special-shaped spring 10 and a shifting rod 13 are provided inside the combined rotary pressing head. The shifting rod 13 is provided at the lower part of the rotary head A11.

[0033] A horizontal slide groove 14 is formed between the rotating head A11 and the rotating head B12 . The rotating head A11 is provided with a vertical slide groove 15 . The special-shaped spring 10 can move in the horizontal slide groove 14 and the vertical slide groove 15 .

[0034] The special-shaped spring 10 is provided with a positioning leg 18 at one end and a working leg 17 at the other end.

[0035] The rotary cylinder 9 adopts a high-precision three-position swing cylinder. The middle position of the rotary cylinder 9 is adjustable within a range of ±10°, and the swing angle of the rotary cylinder 9 is adjustable within a range of 0-90° to any position.

[0036] The working leg 17 of the special-shaped spring 10 is a quenched steel wire with a diameter of φ1.8.

[0037] The rotating head A11 is provided with a special-shaped spring positioning hole 16 .

[0038] The specific method of using the laser welding tool for an electronic throttle valve body and a sector gear provided by the present invention is as follows:

[0039] The throttle shaft 2, throttle body 4, idle spring 3, and sector gear assembly 1 are positioned and installed on the fixture plate 6, and the pressing cylinder 8 is driven to drive the combined rotating pressure head to press the above mechanisms, and the pressing cylinder 8 moves downward, and at the same time drives the rotating cylinder 9, the toothed belt 7, the rotating head A11, the rotating head B12, the special-shaped spring 10, and the shift rod 13 to move downward, and the working leg 17 of the special-shaped spring 10 is inserted between the sector gear assembly 1 and the limit leg of the throttle body 4; the rotating cylinder 9 rotates, and the rotating head A11 and the rotating head B12 are driven to rotate through the toothed belt 7, and the rotating heads A11 and B12 are driven to rotate. The sector gear assembly 1 is driven to rotate by the shifting rod 13 until the limiting support leg of the sector gear assembly 1 contacts the working support leg 17 of the special-shaped spring 10 at the same time, and then the rotation stops; when the rotating heads A11 and B12 rotate, when the working support leg of the special-shaped spring 10 does not contact the limiting support leg of the sector gear assembly 1 of the throttle body 4, the special-shaped spring 10 rotates together with the rotating heads A11 and B12; when the working support leg of the special-shaped spring 10 contacts the limiting support leg of the sector gear assembly 1 of the throttle body 4, the rotating heads A11 and B12 continue to rotate, and the special-shaped spring 10 is in the horizontal slide groove 14. , elastic deformation occurs in the vertical slide groove 15, that is, the angle 19 of the special-shaped spring becomes smaller, so that the special-shaped spring 10 and the rotating head A11 and the rotating head B12 produce relative movement, ensuring that the working support leg 17 of the special-shaped spring 10 is in contact with the limit support leg of the fan gear assembly 1 of the throttle body 4 and the limit support leg of the fan gear assembly 1 at the same time; the servo mechanism pushes the throttle valve plate from the closed position to open to the set angle. The low idle position welding is generally set to 0-0.3°. Due to the diameter of the special-shaped spring 10, the throttle valve plate is adjusted from a small angle (0-0.3°) to a large angle (4-6°), that is, the servo mechanism sets the angle to 2-6°. When the valve plate angle detection system determines that the valve plate angle reaches the set angle, the equipment uses the laser welding host to laser weld the fan gear assembly 1 and the throttle shaft 2.

[0040] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. However, the present invention is not limited to the above embodiments. Various modifications are possible within the scope of ordinary skill in the art without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A laser welding tool for an electronic throttle valve body and a sector gear, characterized in that: The invention comprises a positioning and mounting mechanism, a pressing and rotating mechanism and a base (5), wherein the positioning and mounting mechanism comprises a fixture plate (6), wherein the fixture plate (6) is fixedly mounted on the base (5), and the pressing and rotating mechanism comprises a pressing cylinder (8), a rotating cylinder (9) and a toothed belt (7), wherein the pressing cylinder (8) is fixedly mounted on the base (5), and the rotating cylinder (9) is arranged on the pressing cylinder (8), and one end of the toothed belt (7) is connected to the rotating cylinder (9), and the other end is connected to the combined rotating pressure head; the combined rotating pressure head comprises a rotating head A ( 11), rotating head B (12), a special-shaped spring (10) and a shift rod (13) are provided inside the combined rotating pressure head, and the shift rod (13) is provided at the lower part of the rotating head A (11); a horizontal slide groove (14) is formed between the rotating head A (11) and the rotating head B (12), and the rotating head A (11) is provided with a vertical slide groove (15), and the special-shaped spring (10) can move in the horizontal slide groove (14) and the vertical slide groove (15); one end of the special-shaped spring (10) is provided with a positioning foot (18), and the other end is provided with a working foot (17); During operation, the clamping cylinder moves downward, and the working foot of the special-shaped spring is inserted between the limit foot of the sector gear assembly and the throttle body. When the rotating head A and the rotating head B rotate, the working foot of the special-shaped spring does not contact the limit foot of the sector gear assembly of the throttle body, and the special-shaped spring rotates with the rotating head A and the rotating head B. When the working foot of the special-shaped spring contacts the limit foot of the sector gear assembly of the throttle body, the rotating head A and the rotating head B continue to rotate, and the special-shaped spring undergoes elastic deformation in the horizontal and vertical slide grooves, so that the special-shaped spring and the rotating head A and the rotating head B produce relative movement, ensuring that the working foot of the special-shaped spring is in contact with the limit foot of the throttle body and the limit foot of the sector gear assembly at the same time.

2. The laser welding tool for an electronic throttle valve body and a sector gear according to claim 1, characterized in that: The rotary cylinder (9) is connected to a horizontally arranged pulley, the upper portion of the combined rotary pressure head is connected to a horizontally arranged pulley, and the toothed belt (7) connects the two pulleys.

3. The laser welding tool for electronic throttle valve body and sector gear according to claim 1, characterized in that: The rotary cylinder (9) adopts a high-precision three-position swing cylinder. The middle position of the rotary cylinder (9) is adjustable within a range of ±10°, and the swing angle of the rotary cylinder (9) is adjustable within a range of 0-90° to any position.

4. The laser welding tool for an electronic throttle valve body and a sector gear according to claim 1, characterized in that: The working leg (17) of the special-shaped spring (10) is a quenched steel wire with a diameter of φ1.

8.

5. The laser welding tool for electronic throttle valve body and sector gear according to claim 1, characterized in that: The rotating head A (11) is provided with a special-shaped spring positioning hole (16).

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