Laser welding tool for sector gear of electronic throttle body

Abstract

The invention discloses a laser welding tool for a sector gear of an electronic throttle body, and relates to the technical field of welding tools. The laser welding tool for the sector gear of the electronic throttle body comprises a frame, a limiting mechanism and a round opening formed in the middle of the top of the frame, a strip-shaped hole is formed in the position, close to the round opening, of the top of the frame, a pushing mechanism is installed in the position, close to the strip-shaped hole, of an inner cavity of the frame, and the limiting mechanism comprises a hydraulic cylinder and a Z-shaped plate; the telescopic end of the hydraulic cylinder penetrates through the top of the frame and extends into the frame, the telescopic end of the hydraulic cylinder and the bottom of the surface of a Z-shaped plate are fixedly installed, strip-shaped limiting teeth are fixedly installed on the arc concave face of the outer side of the Z-shaped plate, a damper is fixedly installed on the side of the top of the Z-shaped plate, and a semicircular pressing block is fixedly installed at the telescopic end of the bottom of the damper. And self-centering can be achieved, limiting, clamping and fixing are achieved, deflection and deflection are not prone to occurring, and safety and reliability are achieved.

Description

Technical Field

[0001] This invention relates to the field of welding fixture technology, specifically to a laser welding fixture for a sector gear of an electronic throttle body. Background Technology

[0002] The sector gear in the electronic throttle body is a key component of the electronic throttle control system. It primarily converts the rotational motion of the DC motor into the rotation of the throttle shaft, thereby precisely controlling the throttle opening. The sector gear is typically mounted on the throttle shaft and is fan-shaped with partially circular gear teeth. Limit stops may be installed on the gear to cooperate with the limiting mechanism on the throttle body, restricting the rotation range of the throttle shaft and determining the fully open and fully closed positions of the throttle. The sector gear used in electronic throttles requires laser welding. To ensure the quality of the laser welding, the sector gear needs to be positioned and fixed; therefore, welding fixtures are required.

[0003] For example, Chinese Patent Publication No. CN107498200B discloses a laser welding fixture for an electronic throttle valve body and a sector gear. The fixture includes mounting the electronic throttle valve body on a fixture plate 4 for positioning and installation, clamping and fixing the electronic throttle valve body by a clamping cylinder 3 and a positioning pressure plate 1, placing an idle speed spring 6 inside the electronic throttle valve body after clamping, and placing the sector gear 7 inside a gear positioning sleeve 8, thereby positioning the sector gear 7 by the gear positioning sleeve 8.

[0004] The existing technical reference documents can realize the positioning and clamping of the sector gear of the electronic throttle body, but the sector gear of the electronic throttle body is prone to circumferential deviation, resulting in inaccurate machining of the sector gear. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention is implemented through the following technical solution: A laser welding fixture for an electronic throttle body sector gear includes: The frame includes a trapezoidal notch at the top edge of the frame, a strip hole at the top of the frame away from the trapezoidal notch, and a pushing mechanism installed in the inner cavity of the frame near the strip hole. The limiting mechanism includes a hydraulic cylinder and a Z-shaped plate. The hydraulic cylinder is fixedly installed on the top of the frame and at the end away from the strip hole. The Z-shaped plate is slidably installed on the top of the frame and near the hydraulic cylinder. The telescopic end of the hydraulic cylinder passes through the top of the frame and extends into it. The telescopic end of the hydraulic cylinder is fixedly installed on the bottom surface of the Z-shaped plate. Strip-shaped limiting teeth are fixedly installed on the outer arc concave surface of the Z-shaped plate. A damper is fixedly installed on the top side of the Z-shaped plate. A semi-circular pressure block is fixedly installed on the telescopic end of the damper. The strip-shaped limiting teeth are evenly distributed on the outer arc concave surface of the Z-shaped plate, so that the teeth at the edge of the electronic throttle body sector gear are embedded between two adjacent strip-shaped limiting teeth. By using the meshing between the teeth, the electronic throttle body sector gear can be limited, making it difficult for the electronic throttle body sector gear to deviate.

[0006] Preferably, both the trapezoidal notch and the strip hole extend through the top of the frame, and there are two strip holes, which are symmetrically installed along the axis of the trapezoidal notch.

[0007] Preferably, the hydraulic cylinders are installed vertically, and there are two hydraulic cylinders installed symmetrically along the central axis of the frame. By extending the telescopic end of the hydraulic cylinder, a downward pushing force can be applied to the bottom end of the Z-shaped plate, which can make the Z-shaped plate move downward. The strip-shaped limiting tooth moves vertically, so that the strip-shaped limiting tooth always matches the electronic throttle body sector gear. The Z-shaped plate drives the damper to move downward, so that the semi-circular pressure block moves downward with the damper. The height of the semi-circular pressure block can be adjusted. Since the bottom of the semi-circular pressure block is flat, the contact area between the semi-circular pressure block and the electronic throttle body sector gear can be increased, which helps to press and fix the electronic throttle body sector gear. The hydraulic cylinder is paused and put into an extended state, so that the electronic throttle body sector gear can be continuously pressed and fixed through the damper and the semi-circular pressure block. Once the electronic throttle body sector gear is welded, the hydraulic cylinder can be activated again. By contracting the extension end of the hydraulic cylinder, an upward pulling force can be applied to the Z-shaped plate, causing the Z-shaped plate to move upward. The damper and the semi-circular pressure block will move upward along with the Z-shaped plate. The semi-circular pressure block will then separate from the welded electronic throttle body sector gear, facilitating the unloading of the electronic throttle body sector gear.

[0008] Preferably, the strip-shaped limiting teeth are conical in shape, and the width of the strip-shaped limiting teeth gradually decreases from top to bottom. The strip-shaped limiting teeth are evenly distributed on the concave surface of the outer side of the Z-shaped plate. There are three dampers, and the three dampers are evenly distributed on the top side of the Z-shaped plate. The bottom of the semi-circular pressure block is flat.

[0009] Preferably, the pushing mechanism includes a support guide rod, which is fixedly installed at the bottom of the inner cavity of the frame. A connecting base is slidably installed on the side of the outer circular surface of the support guide rod. A bent rod is fixedly connected to the side of the surface of the connecting base. An electric telescopic rod is fixedly installed at the support leg at the bottom of the support guide rod. A connecting beam is fixedly connected to the bottom end of the bent rod. A support round rod is fixedly installed on the top of the connecting base. The top end of the support round rod passes through the center of the strip hole. A cylindrical roller is rolled on the top surface of the support round rod. When the operator starts the electric telescopic rod, the extension end of the electric telescopic rod is used for operation, supported by the support guide rod. The contraction of the support rod can apply a tensile force to the connecting beam. Under the connection of the bent rod, the connecting base will move the supporting rod towards the Z-shaped plate. The supporting rod passes through the center of the strip hole, making it easy for the supporting rod to move the cylindrical roller. It is not easy for the structure to get stuck. The cylindrical roller moves towards the Z-shaped plate, so that the outer surface of the cylindrical roller contacts the outer side of the electronic throttle body sector gear at the top of the frame. This pushes the electronic throttle body sector gear, and the cylindrical roller and the Z-shaped plate can clamp the electronic throttle body sector gear, thereby clamping the electronic throttle body sector gear. By extending the telescopic end of the electric telescopic rod, an outward pushing force can be applied to the connecting crossbeam. With the support and guidance of the support guide rod, and by utilizing the connection between the bending rod and the connecting base, the support rod drives the cylindrical roller to move outward together. This causes the outer surface of the cylindrical roller to separate from the outer side of the electronic throttle body sector gear, thus releasing the electronic throttle body sector gear and disengaging the clamping of the electronic throttle body sector gear.

[0010] Preferably, the two ends of the outer side of the connecting beam are slidably installed between the outer circular surface of the support guide rod, and there are two support guide rods, which are symmetrically installed along the central axis in the middle of the frame.

[0011] Preferably, the bending rod is installed at an angle, there are two bending rods, and the two bending rods are installed symmetrically along the central axis in the middle of the frame, the supporting round rod is installed vertically, and the supporting round rod passes through the center of the cylindrical roller.

[0012] Preferably, a centering assembly is installed on the top side of the frame, near the connecting base. The centering assembly includes a connecting rod and a T-shaped block. The middle of the outer surface of the connecting rod is rotatably mounted between a bushing and the top side of the frame. The top of the T-shaped block is fixedly mounted to the top side of the frame cavity with screws. A swing push rod is fixedly installed on the outer side of the connecting rod, near the cylindrical roller. A worm-shaped spring is fixedly installed between the bottom of the outer surface of the connecting rod and the surface of the T-shaped block. A force-bearing rod is fixedly installed at the bottom of the connecting rod. As the connecting base moves towards the Z-shaped plate... The movement is achieved by connecting the base to the end of the force-bearing rod, which then receives a pushing force from the base. The rotating connection of the connecting rod causes the swing push rod to rotate towards the side of the electronic throttle body sector gear near the top of the frame. The worm-shaped spring is elastically deformed by torque, and the end of the swing push rod contacts the outer side of the electronic throttle body sector gear. This, combined with the symmetrical swing push rods on both sides, applies a pulling force to the electronic throttle body sector gear, pushing it to the center of the top of the frame, thus centering the electronic throttle body sector gear. When the connecting base moves in the reverse direction, the pushing force of the connecting base on the force-bearing rod disappears, and under the elastic force of the worm-shaped spring, the connecting round rod drives the swing push rod to rotate in the reverse direction, so that the swing push rod moves away from the electronic throttle body sector gear, thus releasing the centering of the electronic throttle body sector gear.

[0013] Preferably, the connecting rods are installed vertically, and there are two connecting rods, which are installed symmetrically along the central axis at the middle of the frame.

[0014] Preferably, the connecting rod passes through the center of the worm-shaped spring, and the swing push rods are evenly distributed on the sides of the outer circular surface of the connecting rod.

[0015] This invention provides a laser welding fixture for the sector gear of an electronic throttle body. It has the following advantages: 1. The laser welding fixture for the electronic throttle body sector gear uses strip-shaped limiting teeth evenly distributed on the outer arc concave surface of the Z-shaped plate. This allows the teeth at the edge of the electronic throttle body sector gear to embed between two adjacent strip-shaped limiting teeth. By utilizing the meshing between the teeth, the electronic throttle body sector gear can be limited, making it less likely for the electronic throttle body sector gear to shift as a whole.

[0016] Second, the laser welding fixture for the electronic throttle body sector gear, when the Z-shaped plate drives the strip limiting tooth to move downward, and the width of the strip limiting tooth gradually decreases from top to bottom, the strip limiting tooth can be adjusted to adapt to electronic throttle body sector gears of different lengths by adjusting the height of the strip limiting tooth, which has strong adaptability and reduces limitations.

[0017] Third, the laser welding fixture for the electronic throttle body sector gear uses a Z-shaped plate to drive the damper downwards, causing the semi-circular pressure block to move downwards along with the damper. This allows for adjustment of the height of the semi-circular pressure block. The bottom of the semi-circular pressure block is flat, increasing the contact area between it and the electronic throttle body sector gear. This facilitates pressing and fixing the electronic throttle body sector gear and pauses the hydraulic cylinder's operation, placing it in an extended state. The damper and semi-circular pressure block then continuously press and fix the electronic throttle body sector gear.

[0018] IV. The laser welding fixture for the electronic throttle body sector gear uses a support rod that passes through the center of the strip hole, allowing the support rod to move the cylindrical roller easily and preventing structural jamming. By moving the cylindrical roller closer to the Z-shaped plate, the outer surface of the cylindrical roller contacts the outer side of the electronic throttle body sector gear at the top of the frame, giving the electronic throttle body sector gear a pushing force. The cylindrical roller and the Z-shaped plate can then clamp the electronic throttle body sector gear, thus assembling it.

[0019] 5. The laser welding fixture for the electronic throttle body sector gear uses the connecting base to push the force rod, causing the connecting round rod to drive the swing push rod to rotate towards the side of the electronic throttle body sector gear near the top of the frame. The end of the swing push rod contacts the outer side of the electronic throttle body sector gear, thereby applying a pulling force to the electronic throttle body sector gear together through the symmetrical swing push rods on both sides. This pushes the electronic throttle body sector gear to the middle of the top of the frame, thus centering the electronic throttle body sector gear. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the laser welding fixture for the sector gear of the electronic throttle body of the present invention; Figure 2 This is a bottom view schematic diagram of the laser welding fixture for the sector gear of the electronic throttle body of the present invention; Figure 3 This is a schematic diagram of the connection structure between the limiting mechanism and the frame of the present invention; Figure 4 This is a schematic diagram of the overall structure of the limiting mechanism of the present invention; Figure 5This is a schematic diagram of the connection structure between the driving mechanism and the frame of the present invention; Figure 6 This is a schematic diagram of the overall structure of the driving mechanism of the present invention; Figure 7 This is a schematic diagram of the connection structure between the centering component and the frame and bending rod of the present invention; Figure 8 This is a schematic diagram of the overall structure of the centering component of the present invention.

[0021] In the diagram: 1. Frame; 2. Trapezoidal notch; 3. Strip hole; 4. Pushing mechanism; 5. Limiting mechanism; 6. Centering component; 41. Supporting guide rod; 42. Connecting base; 43. Bending rod; 44. Electric telescopic rod; 45. Connecting crossbeam; 46. Supporting round rod; 47. Cylindrical roller; 51. Hydraulic cylinder; 52. Z-shaped plate; 53. Strip limiting tooth; 54. Damper; 55. Semi-circular pressure block; 61. Connecting round rod; 62. T-shaped block; 63. Swinging push rod; 64. Snail spring; 65. Force-bearing rod. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] For the first embodiment, please refer to... Figure 1-4 The present invention provides a technical solution: A laser welding fixture for an electronic throttle body sector gear includes: The frame 1 has a trapezoidal notch 2 at the top side of the frame 1. A strip hole 3 is provided at the top of the frame 1 and at the end away from the trapezoidal notch 2. A pushing mechanism 4 is installed in the inner cavity of the frame 1 near the strip hole 3. Both the trapezoidal notch 2 and the strip hole 3 penetrate the top of the frame 1. There are two strip holes 3, and the two strip holes 3 are installed symmetrically along the axis of the trapezoidal notch 2.

[0024] The limiting mechanism 5 includes a hydraulic cylinder 51 and a Z-shaped plate 52. The hydraulic cylinder 51 is fixedly installed on the top of the frame 1 at one end away from the strip hole 3. The Z-shaped plate 52 is slidably installed on the top of the frame 1 near the hydraulic cylinder 51. The telescopic end of the hydraulic cylinder 51 passes through the top of the frame 1 and extends into it. The telescopic end of the hydraulic cylinder 51 is fixedly installed on the bottom surface of the Z-shaped plate 52. A strip-shaped limiting tooth 53 is fixedly installed on the outer arc concave surface of the Z-shaped plate 52. A damper 54 is fixedly installed on the top side of the Z-shaped plate 52. A semi-circular pressure block 55 is fixedly installed on the telescopic end of the bottom of the damper 54. The strip-shaped limiting teeth 53 are evenly distributed on the arc concave surface on the outer side of the Z-shaped plate 52, so that the teeth at the edge of the electronic throttle body sector gear are embedded between two adjacent strip-shaped limiting teeth 53. By using the meshing between the teeth, the electronic throttle body sector gear can be limited, so that the electronic throttle body sector gear as a whole is not easy to deviate.

[0025] The hydraulic cylinders 51 are installed vertically. There are two hydraulic cylinders 51, and the two hydraulic cylinders 51 are installed symmetrically along the central axis in the middle of the frame 1.

[0026] When hydraulic cylinder 51 is activated, the extension of its telescopic end applies a downward pushing force to the bottom of Z-shaped plate 52, causing it to move downwards. Simultaneously, the strip-shaped limiting tooth 53 moves vertically, ensuring it always engages with the electronic throttle body sector gear. The Z-shaped plate 52 then drives the damper 54 downwards, causing the semi-circular pressure block 55 to move downwards along with it. This allows for height adjustment of the semi-circular pressure block 55. Furthermore, the flat bottom of the semi-circular pressure block 55 increases the contact area between it and the electronic throttle body sector gear, facilitating better engagement of the electronic throttle body sector gear. The wheel is pressed and fixed, and the operation of the hydraulic cylinder 51 is paused, so that the hydraulic cylinder 51 is in the extended state. The damper 54 and the semi-circular pressure block 55 can continuously press and fix the electronic throttle body sector gear. After the electronic throttle body sector gear is welded, the hydraulic cylinder 51 can be restarted. By contracting the extension end of the hydraulic cylinder 51, an upward pulling force can be applied to the Z-shaped plate 52, so that the Z-shaped plate 52 can move upward. The damper 54 and the semi-circular pressure block 55 will move upward together with the Z-shaped plate 52. The semi-circular pressure block 55 separates from the welded electronic throttle body sector gear, which facilitates the unloading of the electronic throttle body sector gear.

[0027] The strip-shaped limiting tooth 53 is conical in shape, and its width gradually decreases from top to bottom. The strip-shaped limiting tooth 53 is evenly distributed on the concave surface of the outer side of the Z-shaped plate 52. There are three dampers 54, and the three dampers 54 are evenly distributed on the top side of the Z-shaped plate 52. The bottom of the semi-circular pressure block 55 is flat.

[0028] The second embodiment is based on the first embodiment; please refer to [link / reference]. Figures 1 to 6 As shown: The pushing mechanism 4 includes a support guide rod 41, which is fixedly installed at the bottom of the inner cavity of the frame 1. A connecting base 42 is slidably installed on the side of the outer circular surface of the support guide rod 41. A bent rod 43 is fixedly connected to the side of the surface of the connecting base 42. An electric telescopic rod 44 is fixedly installed at the support leg at the bottom of the support guide rod 41. A connecting beam 45 is fixedly connected to the bottom end of the bent rod 43. A support round rod 46 is fixedly installed on the top of the connecting base 42. The top end of the support round rod 46 passes through the center of the strip hole 3. A cylindrical roller 47 is rolled on the top. Workers operate the electric telescopic rod 44. Supported by the guide rod 41, the telescopic end of the electric telescopic rod 44 applies tension to the connecting beam 45. Connected by the bending rod 43, the connecting base 42 moves the supporting rod 46 towards the Z-shaped plate 52. The supporting rod 46 passes through the center of the slot 3, making it easy for the cylindrical roller 47 to move, preventing structural jamming. The cylindrical roller 47 is moved towards the Z-shaped plate 52, so that the outer surface of the cylindrical roller 47 contacts the outer side of the electronic throttle body sector gear at the top of the frame 1. This causes the electronic throttle body sector gear to be pushed, and the cylindrical roller 47 and the Z-shaped plate 52 can be used to clamp the electronic throttle body sector gear, thereby clamping the electronic throttle body sector gear and pausing the operation of the electric telescopic rod 44, so that the telescopic end of the electric telescopic rod 44 stops retracting. When it is necessary to release the electronic throttle body sector gear, then... The electric telescopic rod 44 is activated for operation. By extending the telescopic end of the electric telescopic rod 44, an outward pushing force can be applied to the connecting crossbeam 45. Under the support and guidance of the support guide rod 41, and by utilizing the connection between the bending rod 43 and the connecting base 42, the support rod 46 drives the cylindrical roller 47 to move outward together. This causes the outer surface of the cylindrical roller 47 to separate from the outer side of the electronic throttle body sector gear, thus releasing the electronic throttle body sector gear and disengaging the clamping of the electronic throttle body sector gear.

[0029] The two ends of the connecting beam 45 are slidably installed between the outer ends and the outer circular surface of the support guide rod 41. There are two support guide rods 41, and the two support guide rods 41 are symmetrically installed along the central axis in the middle of the frame 1.

[0030] The bent rod 43 is installed at an angle. There are two bent rods 43, and the two bent rods 43 are installed symmetrically along the central axis in the middle of the frame 1. The supporting round rod 46 is installed vertically and passes through the center of the cylindrical roller 47.

[0031] The third embodiment is based on the first and second embodiments; please refer to [link / reference]. Figures 1 to 8 As shown: A centering assembly 6 is installed on the top side of frame 1, near the connecting base 42. The centering assembly 6 includes a connecting rod 61 and a T-block 62. The middle of the outer surface of the connecting rod 61 is rotatably mounted between a bushing and the top side of frame 1. The top of the T-block 62 is fixedly mounted to the top side of the inner cavity of frame 1 with screws. A swing push rod 63 is fixedly mounted on the side of the outer surface of the connecting rod 61, near the cylindrical roller 47. A worm-shaped spring 64 is fixedly mounted between the bottom of the outer surface of the connecting rod 61 and the surface of the T-block 62. A force-bearing rod 65 is fixedly mounted on the bottom of the connecting rod 61. As the connecting base 42 moves towards the side closer to the Z-shaped plate 52... By connecting the base 42 and the end of the force rod 65, the force rod 65 can be pushed by the base 42. Under the rotational connection of the connecting rod 61, the connecting rod 61 drives the swing push rod 63 to rotate towards the side of the electronic throttle body sector gear near the top of the frame 1. The worm-shaped spring 64 is elastically deformed by the torque force. The end of the swing push rod 63 contacts the outside of the electronic throttle body sector gear. Thus, the swing push rods 63 on both sides apply a pulling force to the electronic throttle body sector gear, which can push the electronic throttle body sector gear to the middle of the top of the frame 1, thereby centering the electronic throttle body sector gear. When the connecting base 42 moves in the reverse direction, the pushing force of the connecting base 42 on the force-bearing rod 65 disappears, and under the elastic force of the worm-shaped spring 64, the connecting round rod 61 drives the swing push rod 63 to rotate in the reverse direction, so that the swing push rod 63 moves away from the electronic throttle body sector gear, thus releasing the centering of the electronic throttle body sector gear.

[0032] The connecting rods 61 are installed vertically. There are two connecting rods 61, and the two connecting rods 61 are installed symmetrically along the central axis of the middle of the frame 1.

[0033] The connecting rod 61 passes through the center of the worm-shaped spring 64, and the swing push rods 63 are evenly distributed on the sides of the outer circular surface of the connecting rod 61.

[0034] When in use, the staff first place the electronic throttle body sector gear that needs to be welded on the top of the frame 1, with the round hole of the electronic throttle body sector gear close to the round opening 2. At this time, the staff activates the electric telescopic rod 44. With the support of the guide rod 41, the contraction of the telescopic end of the electric telescopic rod 44 applies a pulling force to the connecting beam 45. Connected by the bending rod 43, the connecting base 42 moves the supporting round rod 46 towards the Z-shaped plate 52. The supporting round rod 46 passes through the center of the slot 3, allowing the cylindrical roller 47 to move easily without structural jamming. The movement of the cylindrical roller 47 towards the Z-shaped plate 52 ensures that the outer surface of the cylindrical roller 47 aligns with the electronic throttle at the top of the frame 1. When the outer side of the sector gear of the throttle body contacts, the sector gear of the electronic throttle body is pushed by the strip-shaped limiting teeth 53 evenly distributed on the concave surface of the outer side of the Z-shaped plate 52. This causes the teeth at the edge of the sector gear of the electronic throttle body to embed between two adjacent strip-shaped limiting teeth 53. By using the meshing between the teeth, the sector gear of the electronic throttle body can be limited, making it difficult for the sector gear of the electronic throttle body to deviate. The cylindrical roller 47 and the Z-shaped plate 52 can then clamp the sector gear of the electronic throttle body and pause the operation of the electric telescopic rod 44, causing the telescopic end of the electric telescopic rod 44 to stop retracting. Simultaneously, as the connecting base 42 moves closer to the Z-shaped plate 52, the connecting base 42 and the end of the force rod 65 come into contact, so that the force rod 65 is pushed by the connecting base 42. Under the rotational connection of the connecting round rod 61, the connecting round rod 61 drives the swing push rod 63 to rotate towards the side of the electronic throttle body sector gear near the top of the frame 1. The worm-shaped spring 64 is elastically deformed by the torque force, and the end of the swing push rod 63 contacts the outside of the electronic throttle body sector gear. Thus, the swing push rods 63 on both sides apply a pulling force to the electronic throttle body sector gear, which can push the electronic throttle body sector gear to the middle of the top of the frame 1, thereby centering the electronic throttle body sector gear. The operator then activates the hydraulic cylinder 51. By extending the telescopic end of the hydraulic cylinder 51, a downward pushing force is applied to the bottom of the Z-shaped plate 52, causing the Z-shaped plate 52 to move downwards. The strip-shaped limiting tooth 53 moves vertically, ensuring that the strip-shaped limiting tooth 53 always engages with the electronic throttle body sector gear. The Z-shaped plate 52 drives the damper 54 to move downwards, causing the semi-circular pressure block 55 to move downwards along with the damper 54. This allows for adjustment of the height of the semi-circular pressure block 55. Furthermore, since the bottom of the semi-circular pressure block 55 is flat, the contact area between the semi-circular pressure block 55 and the electronic throttle body sector gear is increased, which helps to press and fix the electronic throttle body sector gear. The operator then pauses the operation of the hydraulic cylinder 51, leaving it in an extended state. The damper 54 and the semi-circular pressure block 55 can then continuously press and fix the electronic throttle body sector gear. When it is necessary to release the electronic throttle body sector gear, the hydraulic cylinder 51 can be activated again. By retracting the extension end of the hydraulic cylinder 51, an upward pulling force can be applied to the Z-shaped plate 52, which will cause the Z-shaped plate 52 to move upward. The damper 54 and the semi-circular pressure block 55 will move upward together with the Z-shaped plate 52. The semi-circular pressure block 55 will then separate from the welded electronic throttle body sector gear. Furthermore, the staff will activate the electric telescopic rod 44 again to carry out the work. By extending the telescopic end of the electric telescopic rod 44, an outward pushing force can be applied to the connecting crossbeam 45. Under the support and guidance of the support guide rod 41, and by utilizing the connection between the bending rod 43 and the connecting base 42, the support round rod 46 drives the cylindrical roller 47 to move outward together. This causes the outer surface of the cylindrical roller 47 to separate from the outer side of the electronic throttle body sector gear, thereby releasing the electronic throttle body sector gear and releasing the clamping of the electronic throttle body sector gear. Furthermore, when the connecting base 42 moves in the reverse direction, the pushing force of the connecting base 42 on the force rod 65 disappears, and under the elastic force of the worm-shaped spring 64, the connecting round rod 61 drives the swing push rod 63 to rotate in the reverse direction, so that the swing push rod 63 moves away from the electronic throttle body sector gear, thus releasing the centering of the electronic throttle body sector gear, and the electronic throttle body sector gear can be removed.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser welding fixture for the sector gear of an electronic throttle body, characterized in that: include: A frame (1) and a trapezoidal notch (2) opened at the top side of the frame (1). A strip hole (3) is opened at the top of the frame (1) and at the end away from the trapezoidal notch (2). A pushing mechanism (4) is installed in the inner cavity of the frame (1) and near the strip hole (3). The limiting mechanism (5) includes a hydraulic cylinder (51) and a Z-shaped plate (52). The hydraulic cylinder (51) is fixedly installed on the top of the frame (1) and at one end away from the strip hole (3). The Z-shaped plate (52) is slidably installed on the top of the frame (1) and close to the hydraulic cylinder (51). The telescopic end of the hydraulic cylinder (51) passes through the top of the frame (1) and extends into its interior. The telescopic end of the hydraulic cylinder (51) is fixedly installed on the bottom of the surface of the Z-shaped plate (52). A strip-shaped limiting tooth (53) is fixedly installed on the outer arc concave surface of the Z-shaped plate (52). A damper (54) is fixedly installed on the side of the top of the Z-shaped plate (52). A semi-circular pressure block (55) is fixedly installed on the telescopic end of the bottom of the damper (54).

2. The laser welding fixture for the sector gear of an electronic throttle body according to claim 1, characterized in that: The trapezoidal notch (2) and the strip hole (3) both penetrate the top of the frame (1). There are two strip holes (3), and the two strip holes (3) are installed symmetrically along the axis of the trapezoidal notch (2).

3. The laser welding fixture for the sector gear of an electronic throttle body according to claim 1, characterized in that: The hydraulic cylinder (51) is installed vertically. There are two hydraulic cylinders (51), and the two hydraulic cylinders (51) are installed symmetrically along the central axis of the frame (1).

4. The laser welding fixture for the sector gear of an electronic throttle body according to claim 1, characterized in that: The strip-shaped limiting tooth (53) is conical in shape. The width of the strip-shaped limiting tooth (53) gradually decreases from top to bottom. The strip-shaped limiting tooth (53) is evenly distributed on the concave surface of the outer side of the Z-shaped plate (52). There are three dampers (54), and the three dampers (54) are evenly distributed on the side of the top of the Z-shaped plate (52). The bottom of the semi-circular pressure block (55) is flat.

5. The laser welding fixture for the sector gear of an electronic throttle body according to claim 1, characterized in that: The pushing mechanism (4) includes a support guide rod (41), which is fixedly installed at the bottom of the inner cavity of the frame (1). A connecting base (42) is slidably installed on the side of the outer circular surface of the support guide rod (41). A bent rod (43) is fixedly connected to the side of the surface of the connecting base (42). An electric telescopic rod (44) is fixedly installed at the support leg at the bottom of the support guide rod (41). A connecting beam (45) is fixedly connected to the bottom end of the bent rod (43). A support round rod (46) is fixedly installed on the top of the connecting base (42). The top end of the support round rod (46) passes through the center of the strip hole (3). A cylindrical roller (47) is rolled on the top of the surface of the support round rod (46).

6. The laser welding fixture for the sector gear of an electronic throttle body according to claim 5, characterized in that: The two ends of the connecting beam (45) are slidably installed between the outer surfaces of the support guide rods (41). There are two support guide rods (41), and the two support guide rods (41) are symmetrically installed along the central axis at the middle of the frame (1).

7. The laser welding fixture for the sector gear of an electronic throttle body according to claim 5, characterized in that: The bent rod (43) is installed at an angle. There are two bent rods (43), and the two bent rods (43) are installed symmetrically along the central axis in the middle of the frame (1). The supporting round rod (46) is installed vertically and passes through the center of the cylindrical roller (47).

8. The laser welding fixture for the sector gear of an electronic throttle body according to claim 5, characterized in that: A centering assembly (6) is installed on the top side of the frame (1) near the connecting base (42). The centering assembly (6) includes a connecting rod (61) and a T-block (62). The middle of the outer surface of the connecting rod (61) is rotatably installed between the bushing and the top side of the frame (1). The top of the T-block (62) is fixedly installed to the top side of the inner cavity of the frame (1) by screws. A swing push rod (63) is fixedly installed on the side of the outer surface of the connecting rod (61) near the cylindrical roller (47). A worm-shaped spring (64) is fixedly installed between the bottom of the outer surface of the connecting rod (61) and the surface of the T-block (62). A force-bearing rod (65) is fixedly installed at the bottom of the connecting rod (61).

9. The laser welding fixture for the sector gear of an electronic throttle body according to claim 8, characterized in that: The connecting rod (61) is installed vertically. There are two connecting rods (61), and the two connecting rods (61) are installed symmetrically along the central axis of the frame (1).

10. The laser welding fixture for the sector gear of an electronic throttle body according to claim 8, characterized in that: The connecting rod (61) passes through the center of the worm-shaped spring (64), and the swing push rod (63) is evenly distributed on the side of the outer circle of the connecting rod (61).

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