Camshaft position sensor welding fixture

Abstract

The application discloses a camshaft position sensor welding positioning clamp and relates to the technical field of sensor welding equipment. The camshaft position sensor welding positioning clamp comprises a positioning base, a positioning table movably arranged on the top surface of the positioning base, a positioning groove arranged on the top surface of the positioning table, a pressure rod assembly arranged on the positioning base, a correction cylinder assembly movably arranged on the pressure rod assembly, a chip pin correction assembly arranged outside the positioning groove, a plurality of turnover motors arranged on the positioning base and provided with pressure rods on the output shafts of the turnover motors, a plurality of correction cylinders slidably arranged outside the pressure rods and provided with correction corner clamps on the outer circumferential walls of the correction cylinders, a plurality of rotating motors arranged on the positioning base and provided with circular correction discs coaxially arranged on the output shafts of the rotating motors, arc-shaped missing grooves arranged on the circular correction discs, and correction pins arranged in the arc-shaped missing grooves. The camshaft position sensor welding positioning clamp has the advantages that the welding quality is improved through pre-welding positioning.

Description

Technical Field

[0001] This invention relates to the field of sensor welding equipment technology, and specifically to a welding positioning fixture for a camshaft position sensor. Background Technology

[0002] In the production of camshaft position sensors, the chip pins and interface pins need to be overlapped first, and then welded by laser welding. During the overlapping process, if the chip pins deform, gaps will be generated at the overlap point, which can easily cause poor solder joints or prevent welding after laser welding. This can lead to rework or even scrap the camshaft position sensor, reducing work efficiency and the quality of the welded part. Summary of the Invention

[0003] To address the aforementioned technical shortcomings, the purpose of this invention is to provide a welding positioning fixture for a camshaft position sensor, which has advantages such as improved welding quality through pre-welding positioning.

[0004] To solve the above technical problems, the present invention adopts the following technical solution: The present invention provides a welding and positioning fixture for a camshaft position sensor, comprising:

[0005] Positioning seat;

[0006] The positioning platform is movably mounted on the top surface of the positioning seat, and a positioning groove is provided on the top surface of the positioning platform.

[0007] The pressure bar assembly is mounted on the positioning seat, and the position of the pressure bar assembly is adapted to the position of the positioning groove;

[0008] The calibration cylinder assembly is movably mounted on the pressure bar assembly.

[0009] A chip pin calibration assembly is located outside the positioning slot;

[0010] The pressure bar assembly includes multiple flip motors mounted on the positioning seat, and a pressure bar is mounted on the output shaft of each flip motor.

[0011] The calibration cylinder assembly includes multiple calibration cylinders that are slidably sleeved on the outside of the pressure rod, and calibration clips are provided on the outer peripheral wall of the calibration cylinder;

[0012] The chip pin calibration assembly includes multiple rotating motors mounted on a positioning base. The width direction of the positioning slot is the same as the length direction of the output shaft of the rotating motor. The multiple rotating motors are spaced apart along the width direction of the positioning slot. A circular calibration disk is coaxially mounted on the output shaft of the rotating motor. The circular calibration disk has an arc-shaped notch, and a calibration pin is mounted inside the arc-shaped notch.

[0013] Preferably, the positioning platform is provided with multiple connecting bolts evenly distributed along its circumference. The connecting bolts are threaded through the top surface of the positioning platform and the positioning seat, which facilitates the installation and removal of the positioning platform on the positioning seat.

[0014] Preferably, a left bracket and a right bracket are spaced apart on the top surface of the positioning seat. A flip motor is embedded in the end of the left bracket away from the positioning seat and the end of the right bracket away from the positioning seat. The two ends of the pressure rod along the length direction are respectively set on the output shafts of the two flip motors. The output shafts of the flip motors and the pressure rod are coaxial. The pressure rod can be flipped by the flip motors, and then the interface pin can be pressed and fixed by the pressure rod.

[0015] Preferably, the correction angle includes:

[0016] Left corner;

[0017] The right and left corners are spaced apart on the outer peripheral wall of the calibration cylinder. The left and right corners have arc-shaped surfaces on their opposite side walls, and these arc-shaped surfaces are located away from the end of the calibration cylinder. When the flipping motor drives the pressure rod to flip, it can simultaneously drive the calibration corners to flip, thereby allowing the interface pins to be located between the arc-shaped surfaces of the left and right corners. This is beneficial for the accurate positioning of the chip pins after soldering to the interface pins.

[0018] Preferably, a locking bolt is provided on the outer peripheral wall of the calibration cylinder. The locking bolt passes through the calibration cylinder and abuts against the pressure rod. This allows the position of the calibration cylinder to be fixed by tightening the locking bolt after adjusting the position of the calibration cylinder outside the pressure rod as needed. This makes it easier to use the calibration clip to keep the position of the interface pin accurate after it is pressed.

[0019] Preferably, the calibration pin includes:

[0020] The adjusting rod is rotatably connected to the opening at one end of the arc-shaped notch via a rotating shaft with a torsion spring;

[0021] The pin holder is slidably sleeved on the outside of the adjusting rod away from the end of the rotating shaft with torsion spring;

[0022] A polygonal shaft is positioned at the pin seat end away from the adjusting rod, and the center line of the polygonal shaft is parallel to the center line of the output shaft of the rotating motor.

[0023] An arc-shaped limiting rod 545 is movably inserted into the circular calibration disk 52, with the arc-shaped opening of the limiting rod 545 away from the circular calibration disk 52 abutting against the adjusting rod 541. The rotating motor can drive the circular calibration disk and the adjusting rod to rotate simultaneously towards the bottom surface of the chip pin. When the polygonal shaft contacts the bottom surface of the chip pin, the position of the chip pin can be adjusted and maintained, which is beneficial to the accurate positioning of the chip pin after soldering with the interface pin. At the same time, the arc-shaped limiting rod 545 can be adjusted to different lengths outside the circular calibration disk 52 to limit the position of the adjusting rod 541.

[0024] Preferably, the distance from the centerline of the polygonal axis to the output shaft of the rotating motor is greater than the outer diameter of the circular calibration disk, which facilitates the contact between the polygonal axis and the bottom surface of the chip pin, thereby adjusting and maintaining the position of the chip pin.

[0025] Preferably, the other end of the arc-shaped notch is provided with a scraper, which allows debris on the bottom surface of the chip pin to be wiped off before the polygonal axis comes into contact with the bottom surface of the chip pin. This keeps the bottom surface of the chip pin clean and makes the contact between the polygonal axis and the bottom surface of the chip pin more stable.

[0026] Preferably, the length direction of the pressure rod is the same as the width direction of the positioning groove, and the length of the pressure rod is greater than the width of the positioning groove, so that the pressure rod can fix interface pins of different sizes placed in the positioning groove.

[0027] Preferably, a clamping motor is provided at the end of the positioning groove away from the pressure rod. A top clamping plate is provided on the output shaft of the clamping motor. A serrated anti-slip plate is provided on the side wall of the top clamping plate away from the clamping motor. The serrated anti-slip plate corresponds vertically to the opening position on the top surface of the positioning groove, which facilitates the clamping motor to drive the top clamping plate to rotate to different positions, so that the serrated anti-slip plate abuts against the camshaft position sensor, thereby facilitating the fixing of camshaft position sensors of different sizes placed in the positioning groove.

[0028] The beneficial effects of this invention are as follows: 1. The interface pin can be fixed by the pressure rod, and at the same time the pressure motor drives the top plate to flip to different positions, so that the serrated anti-slip plate can abut against the camshaft position sensor, thereby fixing the camshaft position sensor, so that the chip pin and the interface pin can be kept in contact, which facilitates the welding operation and improves the quality and efficiency of the welding.

[0029] 2. The chip pin calibration assembly is set up by starting the rotating motor, which drives the circular calibration disk and the adjusting rod to rotate simultaneously towards the bottom surface of the chip pin. When the chip pin is deformed (i.e., the chip pin is not in contact with the interface pin), the polygonal shaft can push the chip pin closer to the interface pin, thereby making the chip pin in contact with the interface pin. This keeps the chip pin in contact with the interface pin, which can correct the position of the chip pin, making it easier to perform soldering operations and improving the quality of the soldering. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of a welding positioning fixture for a camshaft position sensor provided in an embodiment of the present invention.

[0032] Figure 2 This is a schematic diagram of the correction angle structure of a welding positioning fixture for a camshaft position sensor provided in an embodiment of the present invention.

[0033] Figure 3 This is a schematic diagram of the connection structure of the pressure rod assembly and the correction cylinder assembly of a welding positioning fixture for a camshaft position sensor provided in an embodiment of the present invention.

[0034] Figure 4 This is a schematic diagram of the chip pin correction component structure of a camshaft position sensor welding positioning fixture provided in an embodiment of the present invention.

[0035] Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point A in the middle.

[0036] Figure 6 This is a schematic diagram of the clamping motor structure of a welding positioning fixture for a camshaft position sensor, provided in an embodiment of the present invention.

[0037] Figure 7 This is a schematic diagram of the calibration pin position of a welding positioning fixture for a camshaft position sensor, provided as an embodiment of the present invention.

[0038] Figure 8 This is a schematic diagram of an arc-shaped limiting rod structure for a welding positioning fixture for a camshaft position sensor, provided in an embodiment of the present invention.

[0039] Explanation of reference numerals in the attached drawings: 1. Positioning seat; 2. Positioning platform; 21. Positioning groove; 22. Connecting bolt; 3. Pressure rod assembly; 31. Tilting motor; 32. Pressure rod; 33. Left bracket; 34. Right bracket; 4. Correction cylinder assembly; 41. Correction cylinder; 42. Correction angle; 421. Left angle; 422. Right angle; 423. Arc-shaped surface; 5. Chip pin correction assembly; 51. Rotating motor; 52. Circular correction disc; 53. Arc-shaped notch; 531. Scraper; 54. Correction pin; 541. Adjusting rod; 542. Rotating shaft with torsion spring; 543. Pin seat; 544. Polygonal shaft; 545. Arc-shaped limit rod; 6. Pressing motor; 61. Top plate; 62. Serrated anti-slip plate. Detailed Implementation

[0040] 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.

[0041] Example 1

[0042] like Figures 1 to 4 As shown, this invention provides a welding positioning fixture for a camshaft position sensor, including a positioning base 1; a positioning stage 2 movably disposed on the top surface of the positioning base 1, with a positioning groove 21 provided on the top surface of the positioning stage 2; a pressure rod assembly 3 disposed on the positioning base 1, the position of the pressure rod assembly 3 matching the position of the positioning groove 21; a calibration cylinder assembly 4 movably disposed on the pressure rod assembly 3; a chip pin calibration assembly 5 disposed outside the positioning groove 21; the pressure rod assembly 3 includes multiple flip motors 31 disposed on the positioning base 1, with pressure rods 32 disposed on the output shafts of the flip motors 31; and a calibration cylinder assembly 4 movably disposed on the pressure rod assembly 3. The positive cylinder assembly 4 includes multiple correcting cylinders 41 that are slidably sleeved outside the pressure rod 32. The outer peripheral wall of the correcting cylinder 41 is provided with a correcting clip 42. The chip pin correcting assembly 5 includes multiple rotating motors 51 that are mounted on the positioning seat 1. The width direction of the positioning groove 21 is the same as the length direction of the output shaft of the rotating motor 51. The multiple rotating motors 51 are spaced apart along the width direction of the positioning groove 21. A circular correcting disk 52 is coaxially mounted on the output shaft of the rotating motor 51. An arc-shaped notch 53 is provided on the circular correcting disk 52. A correcting pin 54 is provided in the arc-shaped notch 53.

[0043] First, place the camshaft position sensor in the positioning groove 21 (and simultaneously place the interface pin in the positioning groove 21 at the position corresponding to the chip pin of the camshaft position sensor, with the interface pin positioned above the chip pin). The flipping motor 31 drives the pressure rod 32 to flip and fix the interface pin. Then, the correction angle 42 on the outer peripheral wall of the correction cylinder 41 presses onto each interface pin (at this time, the chip pin and the interface pin overlap), and then laser welding is performed. Before welding, start the rotating motor 51 to drive the circular correction disk 52 to rotate (the initial position of the circular correction disk 52 is below the bottom surface of the chip pin). This allows the correction pin 54 in the arc-shaped notch 53 to abut against the bottom surface of the chip pin. As the circular correction disk 52 continues to rotate, the correction pin 54 can raise the bottom surface of the chip pin to the same position (to prevent the correction pin 54 from shifting due to deformation, increasing the distance between the correction pin 54 and the interface pin, and thus preventing them from contacting each other, making it impossible to weld the chip pin and the interface pin). This helps to keep the chip pin and the interface pin in contact, facilitating the welding operation.

[0044] Example 2

[0045] Based on Example 1, such as Figure 1 As shown, multiple connecting bolts 22 are evenly distributed along the circumference of the positioning platform 2. The connecting bolts 22 are threaded through the top surface of the positioning platform 2 and the positioning seat 1. This allows the positioning platform 2 to be installed and removed from the positioning seat 1 by disassembling the connecting bolts 22 as needed.

[0046] Example 3

[0047] Based on Example 1, such as Figures 1 to 3 As shown, a left bracket 33 and a right bracket 34 are spaced apart on the top surface of the positioning seat 1. A flipping motor 31 is embedded in the end of the left bracket 33 away from the positioning seat 1 and the end of the right bracket 34 away from the positioning seat 1. The two ends of the pressure rod 32 in the length direction are respectively set on the output shafts of the two flipping motors 31. The output shafts of the flipping motors 31 and the pressure rod 32 are coaxial. The correction angle 42 includes a left angle 421. The left angle 421 and the right angle 422 are spaced apart on the outer peripheral wall of the correction cylinder 41. An arc-shaped surface 423 is provided on the opposite side wall of the left angle 421 and the right angle 422, and the arc-shaped surface 423 is located at the end away from the correction cylinder 41. A locking bolt is provided on the outer peripheral wall of the correction cylinder 41. The locking bolt passes through the correction cylinder 41 and abuts against the pressure rod 32.

[0048] When the camshaft position sensor is placed in the positioning groove 21 and the interface pin is placed in the positioning groove 21 at the position corresponding to the chip pin of the camshaft position sensor, the flip motor 31 can be started to drive the pressure rod 32 to rotate towards the interface pin. Then, the pressure rod 32 can press and fix the interface pin placed in the positioning groove 21 (so that the interface pin is located between the arc surface 423 on the left corner 421 and the arc surface 423 on the right corner 422), which is beneficial to the accurate positioning of the chip pin and the interface pin after soldering.

[0049] Depending on the position of the interface pin, the position of the calibration cylinder 41 can be adjusted outside the pressure rod 32, and the position of the calibration cylinder 41 can be fixed by tightening the locking bolt, so as to facilitate the use of the calibration clip 42 to maintain the accuracy of pressing the interface pin.

[0050] Example 4

[0051] Based on Example 1, such as Figure 1 , Figures 4 to 5 , Figures 7 to 8 As shown, the calibration pin 54 includes an adjusting rod 541, which is rotatably connected to one end of the arc-shaped notch 53 via a torsion spring-loaded rotating shaft 542. A pin seat 543 is slidably fitted onto the outside of the adjusting rod 541 away from the torsion spring-loaded rotating shaft 542. A polygonal shaft 544 is located at the end of the pin seat 543 away from the adjusting rod 541, and the axis of the polygonal shaft 544 is parallel to the axis of the output shaft of the rotating motor 51. When the camshaft position sensor and the interface pin are placed in the positioning groove 21 and the interface pin is pressed and fixed by the pressure rod 32 (at this time, the interface pin is located above the chip pin on the camshaft position sensor), the rotating motor 51 is started to drive the circular calibration disk 52 and the adjusting rod 543. The lever 541 rotates simultaneously toward the bottom surface of the chip pin. When the chip pin is deformed (i.e., the chip pin and the interface pin are not in contact), the polygonal shaft 544 rotates with the circular calibration disk 52 and comes into contact with the bottom surface of the chip pin. This pushes the chip pin toward the interface pin, thus making the chip pin and the interface pin in contact. Since the adjusting lever 541 is rotatably connected to one end of the arc-shaped notch 53 through the rotating shaft 542 with a torsion spring, when the polygonal shaft 544 pushes the chip pin into contact with the interface pin, the chip pin and the interface pin can remain in contact (the elastic force of the rotating shaft 542 with the torsion spring is greater than the bending force that bends the chip pin).

[0052] The polygonal shaft 544 allows the outer peripheral wall of the polygonal shaft 544 to contact the bottom surface of the chip pin when the chip pin has different deformation angles.

[0053] The distance from the centerline of the polygonal shaft 544 to the output shaft of the rotating motor 51 is greater than the outer diameter of the circular calibration disk 52; this facilitates the contact between the polygonal shaft 544 and the bottom surface of the chip pin, thereby adjusting and maintaining the position of the chip pin; at the same time, depending on the position of the chip pin, the position of the pin seat 543 can be adjusted by sliding the adjusting rod 541 away from the end of the rotating shaft 542 with the torsion spring, thereby facilitating the contact between the polygonal shaft 544 on the pin seat 543 and the bottom surface of the chip pin.

[0054] An arc-shaped limiting rod 545 is movably inserted into the circular calibration plate 52, with the arc-shaped opening of the limiting rod 545 away from the circular calibration plate 52 abutting against the adjusting rod 541. The arc-shaped opening of the limiting rod 545 faces the adjusting rod 541. The length of the arc-shaped limiting rod 545 extending beyond the circular calibration plate 52 can be adjusted as needed (a bolt can be threaded onto the outside of the circular calibration plate 52, and the bolt abuts against the arc-shaped limiting rod 545). This limits the range of rotation of the arc-shaped limiting rod 545 around the torsion spring-loaded rotating shaft 542.

[0055] Example 5

[0056] Based on Example 1, such as Figures 4 to 5 As shown, a scraper 531 is provided at the other end of the arc-shaped notch 53. When the polygonal shaft 544 rotates under the drive of the rotating motor 51, and before the polygonal shaft 544 contacts the bottom surface of the chip pin, the scraper 531 contacts the bottom surface of the chip pin, which can remove the debris on the bottom surface of the chip pin. This is beneficial to make the contact between the polygonal shaft 544 and the bottom surface of the chip pin more stable, thereby making the contact between the chip pin and the interface pin more stable.

[0057] Example 6

[0058] Based on Example 1, such as Figure 1 As shown, the length direction of the pressure rod 32 is the same as the width direction of the positioning groove 21, and the length of the pressure rod 32 is greater than the width of the positioning groove 21; this allows the pressure rod 32 to fix interface pins of different sizes placed in the positioning groove 21.

[0059] Example 7

[0060] Based on Example 1, such as Figure 1 , Figures 5 to 6As shown, a clamping motor 6 is provided at the end of the positioning groove 21 away from the pressure rod 32. A top clamping plate 61 is provided on the output shaft of the clamping motor 6. A serrated anti-slip plate 62 is provided on the side wall of the top clamping plate 61 away from the clamping motor 6. The serrated anti-slip plate 62 corresponds vertically to the opening position of the top surface of the positioning groove 21, which makes it easy for the clamping motor 6 to drive the top clamping plate 61 to rotate to different positions. This allows the serrated anti-slip plate 62 to come into contact with the camshaft position sensor, thereby fixing the camshaft position sensors of different sizes placed in the positioning groove 21. Before soldering, the position between the chip pins and the interface pins is kept stable, improving the quality after soldering and avoiding the scrapping of the camshaft position sensor.

[0061] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A welding and positioning fixture for a camshaft position sensor, characterized in that, include: Positioning seat (1); Positioning platform (2) is movably set on the top surface of positioning seat (1), and a positioning groove (21) is provided on the top surface of positioning platform (2). The pressure rod assembly (3) is set on the positioning seat (1), and the position of the pressure rod assembly (3) is adapted to the position of the positioning groove (21); The calibration cylinder assembly (4) is movably mounted on the pressure bar assembly (3); Chip pin calibration assembly (5) is disposed outside the positioning groove (21); The pressure rod assembly (3) includes multiple flip motors (31) mounted on the positioning seat (1), and a pressure rod (32) is mounted on the output shaft of the flip motor (31). The calibration cylinder assembly (4) includes multiple calibration cylinders (41) that are slidably sleeved outside the pressure rod (32), and calibration clips (42) are provided on the outer peripheral wall of the calibration cylinder (41). The chip pin calibration assembly (5) includes multiple rotating motors (51) mounted on the positioning base (1). The width direction of the positioning groove (21) is the same as the length direction of the output shaft of the rotating motor (51). The multiple rotating motors (51) are distributed at intervals along the width direction of the positioning groove (21). A circular calibration disk (52) is coaxially mounted on the output shaft of the rotating motor (51). An arc-shaped notch (53) is provided on the circular calibration disk (52). A calibration pin (54) is provided in the arc-shaped notch (53). The calibration pin (54) includes an adjustment rod (541), which is rotatably connected to one end of the arc-shaped notch (53) via a torsion spring-loaded shaft (542); Pin holder (543) is slidably sleeved on the outside of the adjusting rod (541) away from the end of the rotating shaft (542) with torsion spring; A polygonal shaft (544) is located at the end of the pin seat (543) away from the adjusting rod (541). The axis of the polygonal shaft (544) is parallel to the axis of the output shaft of the rotating motor (51). The arc-shaped limiting rod (545) is movably inserted into the circular calibration plate (52), and the arc-shaped limiting rod (545) at the end away from the arc-shaped opening of the circular calibration plate (52) abuts against the adjusting rod (541); The distance from the centerline of the polygonal shaft (544) to the output shaft of the rotating motor (51) is greater than the outer diameter of the circular correction disk (52).

2. The camshaft position sensor welding positioning fixture as described in claim 1, characterized in that, Multiple connecting bolts (22) are evenly distributed along the circumference of the positioning platform (2). The connecting bolts (22) are threaded through the top surface of the positioning platform (2) and the positioning seat (1).

3. The camshaft position sensor welding positioning fixture as described in claim 1, characterized in that, A left bracket (33) and a right bracket (34) are spaced apart on the top surface of the positioning seat (1). A flip motor (31) is embedded in the end of the left bracket (33) away from the positioning seat (1) and the end of the right bracket (34) away from the positioning seat (1). The two ends of the pressure rod (32) in the length direction are respectively set on the output shaft of the two flip motors (31). The output shaft of the flip motor (31) and the pressure rod (32) are coaxial.

4. The camshaft position sensor welding positioning fixture as described in claim 1, characterized in that, Correcting the angle (42) includes: Left corner (421); The right corner (422), left corner (421) and right corner (422) are spaced apart on the outer peripheral wall of the calibration cylinder (41). The left corner (421) and right corner (422) are each provided with an arc surface (423) on their opposite side walls, and the arc surface (423) is located at the end away from the calibration cylinder (41).

5. The camshaft position sensor welding positioning fixture as described in claim 4, characterized in that, A locking bolt is provided on the outer peripheral wall of the correction cylinder (41), and the locking bolt passes through the correction cylinder (41) and abuts against the pressure rod (32).

6. The camshaft position sensor welding positioning fixture as described in claim 1, characterized in that, The other end of the arc-shaped notch (53) is provided with a scraper (531).

7. The camshaft position sensor welding positioning fixture as described in claim 1, characterized in that, The length direction of the pressure rod (32) is the same as the width direction of the positioning groove (21), and the length of the pressure rod (32) is greater than the width of the positioning groove (21).

8. The camshaft position sensor welding positioning fixture as described in claim 1, characterized in that, A clamping motor (6) is provided at the end of the positioning groove (21) away from the pressure rod (32). A top clamping plate (61) is provided on the output shaft of the clamping motor (6). A serrated anti-slip plate (62) is provided on the side wall of the top clamping plate (61) away from the clamping motor (6). The serrated anti-slip plate (62) corresponds vertically to the opening position of the top surface of the positioning groove (21).

Images