A welding fixture for positioning a positioning hole and a sleeve, and a welding tooling including the fixture.

Abstract

This utility model discloses a welding fixture for positioning a positioning hole and a sleeve, and a welding tooling including the fixture. It includes a lower positioning mechanism and an upper positioning mechanism that cooperates with the lower positioning mechanism. The lower positioning mechanism includes a lower positioning pin and a support member. The support member supports the plate, and the lower positioning pin cooperates with the positioning hole of the plate. The upper positioning mechanism includes a driver and an upper positioning pin. The driver drives the upper positioning pin to move up and down. The upper and lower positioning pins are coaxially arranged. The diameter of the lower positioning pin is smaller than the inner diameter of the sleeve, and the diameter of the upper positioning pin is larger than the diameter of the lower positioning pin but not larger than the inner diameter of the sleeve. This welding fixture for positioning a positioning hole and a sleeve can ensure the coaxiality of the sleeve and the positioning hole, and also avoid wear of the positioning hole by the lower positioning pin.

Description

Technical Field

[0001] This utility model relates to the field of welding fixtures, specifically to a welding fixture for positioning a positioning hole and a sleeve, and a welding tooling including the same. Background Technology

[0002] In automotive parts, it is often necessary to weld sleeves onto sheet metal. During the welding process, the sleeves need to mate with the positioning holes on the sheet metal to ensure coaxiality.

[0003] Currently, locating pins are commonly used to position locating holes and sleeves. These locating pins must ensure the coaxiality of the sleeve and the locating hole. During the engagement of the locating pin with the locating hole, the locating pin needs to extend or retract to extend into or retract from the locating hole. In actual production, if the fit between the locating pin and the locating hole is too tight, the extension and retraction of the locating pin will cause wear on the inner hole of the locating hole, affecting the quality of the locating hole on the sheet metal. If the fit clearance between the locating pin and the locating hole is large, although the locating pin can smoothly engage with the locating hole without wearing it, during the welding process, the insufficient positional constraint of the locating pin on the sleeve may affect the coaxiality of the sleeve and the locating hole. Utility Model Content

[0004] The purpose of this utility model is to provide a welding fixture for positioning a positioning hole and a sleeve, and a welding tooling including the fixture. This welding fixture for positioning a positioning hole and a sleeve can ensure the coaxiality of the sleeve and the positioning hole, and can also avoid the wear of the positioning hole by the lower positioning pin.

[0005] To achieve the above objectives, this utility model provides a welding fixture for positioning positioning holes and sleeves, including a lower positioning mechanism and an upper positioning mechanism that cooperates with the lower positioning mechanism. The lower positioning mechanism includes a lower positioning pin and a support member. The support member is used to support the plate, and the lower positioning pin cooperates with the positioning hole of the plate.

[0006] The upper positioning mechanism includes a driver and an upper positioning pin, and the driver drives the upper positioning pin to move up and down.

[0007] The upper and lower positioning pins are coaxially arranged. The diameter of the lower positioning pin is smaller than the inner diameter of the sleeve, and the diameter of the upper positioning pin is larger than the diameter of the lower positioning pin but not larger than the inner diameter of the sleeve.

[0008] Preferably, the arcuate surfaces of the upper locating pin and the sleeve are spaced apart along the circumference of the upper locating pin.

[0009] Preferably, the driver includes a first driver, a connecting plate, and a second driver. The first driver is connected to the telescopic end of the second driver through the connecting plate. The second driver pushes the first driver to rise and fall. The telescopic end of the first driver is connected to an upper positioning pin. The first driver pushes the upper positioning pin to rise and fall.

[0010] Preferably, the driver further includes a guide mechanism, which is connected to the connecting plate.

[0011] Preferably, the guiding mechanism includes a linear slide rail and a base plate, the base plate is fixedly disposed, the guide rail of the linear slide rail is fixedly connected to the base plate, and the slider of the linear slide rail is fixedly connected to the connecting plate.

[0012] This utility model also provides a welding fixture including the aforementioned positioning hole and sleeve welding fixture. The welding fixture further includes a worktable and a plate positioning fixture. The plate positioning fixture and the positioning hole and sleeve welding fixture are respectively fixedly connected to the worktable via a base plate.

[0013] Preferably, the welding fixture further includes a fixing plate clamp, which is used to position the fixing plate that needs to be welded to the plate, and the fixing plate clamp is fixedly connected to the connecting plate.

[0014] Preferably, the fixing piece clamp includes a fixing piece positioning pin and a clamping member. The fixing piece positioning pin cooperates with the positioning hole of the fixing piece, and the clamping member presses against the fixing piece to position the fixing piece.

[0015] Preferably, the fixing plate clamp further includes a third drive, which is connected to the connecting plate. The telescopic end of the third drive is rotatably connected to the clamping member, and the third drive pushes the clamping member to press against the fixing plate.

[0016] According to the above technical solution, the lower positioning pin of this utility model cooperates with the positioning hole of the plate, and the sleeve is sleeved on the lower positioning pin. Since the diameter of the lower positioning pin is smaller than the diameter of the sleeve, the sleeve will not be worn during the cooperation between the sleeve and the lower positioning pin.

[0017] The lower surface of the plate mates with the support component, which supports the plate. When welding is required on the sleeve, the actuator moves, and the upper locating pin descends into the inner hole of the sleeve. The upper and lower locating pins are coaxially arranged. Through the action of the upper locating pin, the sleeve can remain coaxial with the locating hole. Moreover, during the welding process, the limiting action of the upper locating pin ensures that the sleeve maintains a fixed position, thereby guaranteeing the accurate relative position of the sleeve and the locating hole after welding.

[0018] The diameter of the lower locating pin is smaller than the inner diameter of the sleeve, allowing the sleeve to be easily fitted onto it. After welding, the locating hole can also be easily separated from the lower locating pin. The diameter of the upper locating pin is larger than the diameter of the lower locating pin but not larger than the inner diameter of the sleeve. This results in a very small clearance between the upper locating pin and the sleeve. When the upper locating pin is engaged with the sleeve, it reliably controls the position of the sleeve and ensures that the absolute position of the sleeve does not change during production, thus guaranteeing the consistency of the sleeve's position.

[0019] Therefore, by using the welding fixture of the positioning hole and the sleeve, the plate and the sleeve can be reliably positioned. By setting the upper positioning pin, the position of the sleeve can be limited, ensuring the coaxiality of the sleeve and the positioning hole, and also avoiding the wear of the positioning hole by the lower positioning pin.

[0020] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of a welding fixture for positioning positioning holes and sleeves;

[0023] Figure 2 This is a schematic diagram of a lower positioning mechanism;

[0024] Figure 3 This is a schematic diagram of an upper positioning pin;

[0025] Figure 4 This is a schematic diagram of a welding fixture;

[0026] Figure 5 This is a schematic diagram showing the connection between a welding fixture for positioning the positioning hole and the sleeve and a fixing plate fixture;

[0027] Figure 6 This is a schematic diagram showing the connection between a welding fixture for positioning the positioning hole and the sleeve and a fixing plate fixture;

[0028] Figure 7 This is a schematic diagram of a workpiece after welding is completed;

[0029] Figure 8 This is a schematic diagram of a workpiece after welding is completed.

[0030] Explanation of reference numerals in the attached figures

[0031] 11 Lower positioning pin 12 Support component

[0032] 21 Upper positioning pin 101 sleeve

[0033] 10 Plates 102 Fixing Plate

[0034] 31 First drive 32 Connecting board

[0035] 33 Second drive 34 Linear guide rail

[0036] 35 substrates, 41 worktables

[0037] 42 Plate positioning fixture 51 Fixing piece positioning pin

[0038] 52 clamping parts 5 fixing pieces clamps

[0039] 53 Third Drive Detailed Implementation

[0040] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0041] In this utility model, unless otherwise stated, directional words such as "circumferential," "upper," and "lower" included in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as limitations on the term.

[0042] See Figure 1 The welding fixture for positioning positioning holes and sleeves includes a lower positioning mechanism and an upper positioning mechanism that cooperates with the lower positioning mechanism. The lower positioning mechanism includes a lower positioning pin 11 and a support member 12. The support member 12 is used to support the plate 10, and the lower positioning pin 11 cooperates with the positioning hole of the plate 10.

[0043] The upper positioning mechanism includes a driver and an upper positioning pin 21. The driver drives the upper positioning pin 21 to move up and down.

[0044] The upper positioning pin 21 and the lower positioning pin 11 are coaxially arranged. The diameter of the lower positioning pin 11 is smaller than the inner diameter of the sleeve 101, and the diameter of the upper positioning pin 21 is larger than the diameter of the lower positioning pin 11 but not larger than the inner diameter of the sleeve 101.

[0045] Through the implementation of the above technical solution, the lower positioning pin 11 is engaged with the positioning hole of the plate 10, and the sleeve 101 is sleeved on the lower positioning pin 11. Since the diameter of the lower positioning pin 11 is smaller than the diameter of the sleeve 101, the sleeve 101 will not be worn during the engagement of the sleeve 101 and the lower positioning pin 11.

[0046] The lower surface of plate 10 mates with support member 12, which supports plate 10. When welding is required on sleeve 101, the driver actuates, and upper positioning pin 21 descends into the inner hole of sleeve 101. Upper positioning pin 21 and lower positioning pin 11 are coaxially arranged. Through the action of upper positioning pin 21, sleeve 101 can remain coaxial with positioning hole. Moreover, during welding, the limiting action of upper positioning pin 21 ensures that sleeve 101 maintains a fixed position, thereby ensuring accurate relative position between sleeve 101 and positioning hole after welding.

[0047] The diameter of the lower locating pin 11 is smaller than the inner diameter of the sleeve 101, allowing the sleeve 101 to be easily fitted onto the lower locating pin 11. After welding, the locating hole can also be easily separated from the lower locating pin. The diameter of the upper locating pin 21 is larger than the diameter of the lower locating pin 11 but not larger than the inner diameter of the sleeve 101. This results in a very small clearance between the upper locating pin 21 and the sleeve 101. When the upper locating pin 21 is engaged with the sleeve 101, it can reliably control the position of the sleeve 101 and ensure that the absolute position of the sleeve 101 does not change during production, thus guaranteeing the consistency of the sleeve 101's position.

[0048] Therefore, by using the positioning hole and the welding fixture of the sleeve, the plate 10 and the sleeve 101 can be reliably positioned. By setting the upper positioning pin 21, the position of the sleeve 101 can be limited, ensuring the coaxiality of the sleeve 101 and the positioning hole, and also avoiding the wear of the positioning hole by the lower positioning pin 11.

[0049] In this embodiment, preferably, the arc surface of the upper positioning pin 21 that mates with the sleeve 101 is spaced apart along the circumference of the upper positioning pin 21.

[0050] After welding, the sleeve 101 needs to be separated from the upper positioning pin 21. By setting the arc surface of the upper positioning pin 21 and the sleeve 101 to be distributed circumferentially along the upper positioning pin 21, the reliability of the fit between the upper positioning pin 21 and the sleeve 101 can be guaranteed, while making it convenient to separate the sleeve 101 from the upper positioning pin 21 after welding.

[0051] In this embodiment, preferably, the driver includes a first driver 31, a connecting plate 32, and a second driver 33. The first driver 31 is connected to the telescopic end of the second driver 33 through the connecting plate 32. The second driver 33 pushes the first driver 31 to rise and fall. The telescopic end of the first driver 31 is connected to the upper positioning pin 21. The first driver 31 pushes the upper positioning pin 21 to rise and fall.

[0052] The second drive 33 is configured as a mechanism capable of telescopic movement, such as a cylinder or a lead screw. In one embodiment, the second drive 33 is a cylinder, with its telescopic rod connected to the connecting plate 32. Air intake into the cylinder pushes the piston upward, extending the cylinder's telescopic rod. The extended rod pushes the connecting plate 32 upward, thereby causing the first drive 31, which is fixedly connected to the connecting plate 32, to rise. Only after the first drive 31 rises does the sleeve 101 have installation space.

[0053] The operator places the sleeve 101 onto the lower positioning pin 11. Then, the second drive 33 drives the connecting plate 32 to descend, which in turn drives the first drive 31 to descend. After the first drive 31 descends to a position close to the sleeve 101, it is activated. The telescopic end of the first drive 31 pushes the upper positioning pin 21 into the sleeve 101, thereby positioning the sleeve 101.

[0054] After welding is completed, the first drive 31 is activated to pull the upper positioning pin 21 out of the sleeve 101. Then the second drive 33 is activated to push the upper positioning pin 21 up together with the first drive 31 so that the sleeve 101 can have space to separate from the lower positioning pin 11. After that, the operator can take out the plate 10.

[0055] In this embodiment, preferably, the driver further includes a guide mechanism connected to the connecting plate 32.

[0056] A guiding mechanism ensures the reliability of the first positioning pin 11's positioning of the sleeve 101. When the second drive 33 is activated, the guiding mechanism ensures that the first drive 31 moves in a straight line. During repeated movements, the guiding mechanism ensures the consistency of the upper positioning pin 21's movement trajectory, thereby increasing the probability of successful engagement between the upper positioning pin 21 and the sleeve 101.

[0057] In this embodiment, preferably, the guiding mechanism includes a linear slide rail 34 and a base plate 35. The base plate 35 is fixedly disposed, the guide rail of the linear slide rail 34 is fixedly connected to the base plate 35, and the slider of the linear slide rail 34 is fixedly connected to the connecting plate 32.

[0058] The lower positioning pin 11 also includes a base plate 35. By fixing the base plate 35 to the worktable, the relative position of the lower positioning pin 11 and the worktable can be determined. Similarly, by fixing the base plate 35 of the guide mechanism to the worktable, the relative position of the guide mechanism and the lower positioning pin 11 can be ensured, thereby ensuring that the upper positioning pin 21 and the lower positioning pin 11 are coaxially arranged.

[0059] Preferably, an adjustment mechanism is provided for the substrate 35. The adjustment mechanism includes an adjustment substrate and fine-tuning shims. The adjustment substrate is detachably fixed to the worktable, and the fine-tuning shims are located between the substrate 35 and the adjustment substrate. The adjustment substrate is L-shaped. After the substrate 35 is installed, two adjacent sides of the substrate 35 are pressed against the two sides of the L-shaped adjustment substrate by the fine-tuning shims. Therefore, the position of the substrate 35 can be adjusted by adding or removing the fine-tuning shims.

[0060] When the position of the upper positioning pin 21 needs to be adjusted, the position of the upper positioning pin 21 can be finely adjusted by using a fine-tuning shim to ensure the coaxiality of the upper positioning pin 21 and the lower positioning pin 11.

[0061] This utility model also provides a welding fixture including the aforementioned positioning hole and sleeve welding fixture. The welding fixture further includes a worktable 41 and a plate positioning fixture 42. The positioning fixture 42 and the positioning hole and sleeve welding fixture are respectively fixedly connected to the worktable 41 via a base plate 35.

[0062] Through the implementation of the above technical solution, the welding fixture includes a positioning fixture 42 for positioning the plate 10. It can typically include a positioning pin and a clamping fixture for clamping the plate 10. The positioning pin and the lower positioning pin 11 in the positioning fixture 42 work together to fix the position of the plate 10 on the worktable 41. Then, by clamping the plate 10 with the clamping fixture, the position of the plate 10 can be prevented from shifting during the welding process, thereby ensuring that the dimensions of the welded workpiece meet the quality requirements.

[0063] Preferably, the same welding fixture may include multiple positioning clamps 42 and multiple positioning holes and sleeve welding fixtures, so that the welding fixture can complete the welding of multiple plates 10 and sleeves 101 at one time.

[0064] In this embodiment, preferably, the welding fixture further includes a fixing piece clamp 5, which is used to position the fixing piece that needs to be welded to the plate 10, and the fixing piece clamp 5 is fixedly connected to the connecting plate 32.

[0065] Preferably, when there are fixing pieces that need to be welded to the plate 10 near the sleeve 101, the fixing piece clamp 5 for positioning the fixing pieces can be fixedly connected to the connecting plate 32, so that the second drive 33 can drive the fixing piece clamp 5 to achieve synchronous lifting and lowering during the lifting and lowering process.

[0066] When the telescopic rod of the second drive 33 is in the high position, the fixing plate clamp 5 and the first drive 31 are both in the highest position. The operator can place the plate 10, the sleeve 101 and the fixing plate. After these workpieces that need to be welded are placed, the second drive 33 descends. During the descent, the upper positioning pin 21 gradually approaches the sleeve 101, while the fixing plate clamp 5 gradually approaches the plate 10 until the second drive 33 descends to the position. At this time, the upper positioning pin 21 is located above the sleeve 101 and close to the sleeve 101, while the fixing plate is in contact with the upper surface of the plate 10. Then, the first drive 31 is controlled to position the sleeve 101, and the clamping part 52 of the fixing plate clamp 5 will also move to press the fixing plate onto the fixing plate clamp 5. Then, welding is started to weld the sleeve 101 and the fixing plate to the plate 10 respectively.

[0067] In this embodiment, preferably, the fixing piece clamp 5 includes a fixing piece positioning pin 51 and a clamping member 52. The fixing piece positioning pin 51 cooperates with the positioning hole of the fixing piece 102, and the clamping member 52 presses against the fixing piece 102 to position the fixing piece 102.

[0068] The fixing plate can be connected to the fixing plate clamp 5 via the fixing plate positioning pin 51. The fixing plate has a positioning hole, which is fitted onto the fixing plate positioning pin 51. As the second drive 33 descends, the fixing plate gradually approaches the plate 10 until the fixing plate abuts against the upper surface of the plate 10. With the cooperation of the plate 10 and the positioning pin 51, the relative position of the fixing plate with the plate 10 is determined. In order to prevent the fixing plate from shifting during the welding process, the clamping member 52 acts to clamp the fixing plate.

[0069] Preferably, the height of the fixing plate positioning pin 51 is set to be relatively small. After welding is completed, the fixing plate needs to be removed from the fixing plate positioning pin 51 first, and then the plate 10 can be lifted upwards and removed from the lower positioning pin 11. When removing the positioning plate, the plate needs to be displaced in the horizontal direction, which can be achieved through the gap between the sleeve 101 and the lower positioning pin 11. Since the gap between the sleeve 101 and the lower positioning pin 11 is small, the height of the fixing plate positioning pin 51 is also set to be relatively small.

[0070] In this embodiment, preferably, the fixing plate clamp 5 further includes a third drive 53, which is connected to the connecting plate 32. The telescopic end of the third drive 53 is rotatably connected to the clamping member 52, and the third drive 53 pushes the clamping member 52 to press against the fixing plate 102.

[0071] The clamping member 52 is rotatably connected to the third drive 53, which is telescopic, such as a cylinder. The telescopic rod of the third drive 53 is rotatably connected to the middle of the clamping member 52. One end of the clamping member 53 is rotatably connected to the connecting plate 32, and the other end clamps the fixing plate. During the extension of the third drive 53, its telescopic rod pushes the clamping member 53 downward at the position where it is connected to the telescopic rod. The clamping member 53 then rotates downward around the position where it is connected to the connecting plate 32, thus clamping the plate 10 during the rotation.

[0072] When it is necessary to remove plate 10, the third drive 53 retracts, causing the clamping member 52 to rotate upward, which releases the fixed plate.

[0073] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0074] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0075] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A welding fixture for positioning a positioning hole and a sleeve, characterized in that, It includes a lower positioning mechanism and an upper positioning mechanism that cooperates with the lower positioning mechanism. The lower positioning mechanism includes a lower positioning pin (11) and a support member (12). The support member (12) is used to support the plate (10). The lower positioning pin (11) cooperates with the positioning hole of the plate (10). The upper positioning mechanism includes a driver and an upper positioning pin (21), and the driver drives the upper positioning pin (21) to move up and down; The upper positioning pin (21) and the lower positioning pin (11) are coaxially arranged. The diameter of the lower positioning pin (11) is smaller than the inner diameter of the sleeve (101), and the diameter of the upper positioning pin (21) is larger than the diameter of the lower positioning pin (11) but not larger than the inner diameter of the sleeve (101).

2. The welding fixture for positioning a positioning hole and a sleeve according to claim 1, characterized in that, The arc surface of the upper positioning pin (21) that mates with the sleeve (101) is spaced apart along the circumference of the upper positioning pin (21).

3. The welding fixture for positioning a positioning hole and a sleeve according to claim 1, characterized in that, The driver includes a first driver (31), a connecting plate (32), and a second driver (33). The first driver (31) is connected to the telescopic end of the second driver (33) through the connecting plate (32). The second driver (33) pushes the first driver (31) to rise and fall. The telescopic end of the first driver (31) is connected to the upper positioning pin (21). The first driver (31) pushes the upper positioning pin (21) to rise and fall.

4. The welding fixture for positioning a positioning hole and a sleeve according to claim 3, characterized in that The drive also includes a guide mechanism, which is connected to the connecting plate (32).

5. The welding fixture for positioning a positioning hole and a sleeve according to claim 4, characterized in that The guiding mechanism includes a linear slide rail (34) and a base plate (35). The base plate (35) is fixedly installed. The guide rail of the linear slide rail (34) is fixedly connected to the base plate (35). The slider of the linear slide rail (34) is fixedly connected to the connecting plate (32).

6. A welding fixture comprising the positioning hole and sleeve of any one of claims 1-5, wherein, The welding fixture also includes a worktable (41) and a plate positioning fixture (42). The plate positioning fixture (42) and the welding fixture for positioning holes and sleeves are fixedly connected to the worktable (41) via a base plate (35).

7. The welding fixture of claim 6, wherein, The welding fixture also includes a fixing plate clamp (5), which is used to position the fixing plate that needs to be welded to the plate (10). The fixing plate clamp (5) is fixedly connected to the connecting plate (32).

8. The welding fixture of claim 7, wherein, The fixing piece clamp (5) includes a fixing piece positioning pin (51) and a clamping member (52). The fixing piece positioning pin (51) cooperates with the positioning hole of the fixing piece (102), and the clamping member (52) presses against the fixing piece (102) to position the fixing piece (102).

9. The welding fixture of claim 8, wherein, The fixing plate clamp (5) also includes a third drive (53), which is connected to the connecting plate (32). The telescopic end of the third drive (53) is rotatably connected to the clamping member (52). The third drive (53) pushes the clamping member (52) to press against the fixing plate (102).

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