Flexible door ring tailor-welded positioning fixture

Abstract

The application provides a flexible door ring tailor-welding positioning clamp, which comprises an electromagnet group, a base, a positioning pin lifting mechanism and a positioning pin, the electromagnet group is arranged above the base, the positioning pin is arranged at the top of the positioning pin lifting mechanism, the positioning pin lifting mechanism is arranged between the electromagnet group and the base, the bottom of the positioning pin lifting mechanism is connected with the base, the electromagnet group comprises a plurality of electromagnets, a first gap is arranged between two adjacent electromagnets, the positioning pin lifting mechanism comprises a lifting mechanism, a transverse sliding mechanism and a guide mechanism, the bottom of the lifting mechanism is connected with the base, the lifting mechanism is connected with the transverse sliding mechanism, the transverse sliding mechanism is connected with the guide mechanism, and the positioning pin is arranged at the top of the transverse sliding mechanism. The flexible door ring tailor-welding positioning clamp can drive the positioning pin to move in the transverse and lifting directions through only one lifting mechanism, the stability of positioning is improved, the cost is reduced, and the positioning clamp has the advantages of good positioning effect, convenient cleaning and the like.

Description

Technical Field

[0001] This invention relates to the field of machinery, and more specifically to a flexible door ring welding and positioning fixture. Background Technology

[0002] Automotive door rings are a crucial component assembly on a vehicle, significantly impacting its crash performance. Their manufacturing process is a key focus during bodywork production, and the positioning accuracy before welding directly affects the welding quality; therefore, pre-welding positioning is of paramount importance. Currently, the market employs two positioning methods:

[0003] The first method is to use manual assisted positioning. Before each loading, the operator must place the auxiliary positioning fixture in the designated position. Depending on the product characteristics, the position and number of manual fixtures will vary. Since the product is large, manual operation is extremely inconvenient and also affects production efficiency.

[0004] The second method uses an automatic telescopic positioning pin for positioning. The operation process is as follows: first, one set of cylinders moves the positioning pin horizontally, then another set of cylinders moves the positioning pin upward. After the operator loads the material, both sets of cylinders retract, and finally, the dust collection mechanism extends. This mechanism uses three sets of cylinders in linkage. Although it simplifies the manual operation process, the mechanism's operation process is relatively complex, and the magnetic switches on the cylinders are prone to alarming under this welding method. Maintenance is also more time-consuming. Summary of the Invention

[0005] The purpose of this invention is to provide a flexible door ring welding and positioning fixture to solve one or more of the problems in the prior art.

[0006] This invention proposes a flexible door ring welding and positioning fixture, comprising an electromagnet assembly, a base, a positioning pin lifting mechanism, and a positioning pin. The electromagnet assembly is disposed above the base, and the positioning pin is disposed on the top of the positioning pin lifting mechanism. The positioning pin lifting mechanism is disposed between the electromagnet assembly and the base, and the bottom of the positioning pin lifting mechanism is connected to the base. The electromagnet assembly comprises multiple electromagnets, with a first gap between two adjacent electromagnets. The positioning pin lifting mechanism is disposed corresponding to the first gap. The positioning pin lifting mechanism comprises a lifting mechanism, a lateral sliding mechanism, and a guiding mechanism. The bottom of the lifting mechanism is connected to the base, the lifting mechanism is connected to the lateral sliding mechanism, the lateral sliding mechanism is connected to the guiding mechanism, and the positioning pin is disposed on the top of the lateral sliding mechanism.

[0007] In some implementations...

[0008] The electromagnet assembly consists of multiple electromagnets arranged side by side.

[0009] A first limit block is provided on the base corresponding to the lifting mechanism.

[0010] In some implementations...

[0011] The lifting mechanism includes a lifting drive component, a connecting block, a linear guide rail, a movable seat, and a transition block. The lifting drive component and the linear guide rail are respectively disposed on both sides of the mounting plate. The bottom of the lifting drive component is provided with a connecting block. The mounting plate is provided with a second opening corresponding to the connecting block. The connecting block passes through the second opening to the other side of the mounting plate. The linear guide rail is embedded with a movable seat. One end of the connecting block passes through the second opening and connects to the movable seat. The other end of the connecting block is connected to the transition block.

[0012] The lateral sliding mechanism includes a guide shaft and a sliding seat. The guide shaft is mounted on the transition block, and the sliding seat is sleeved on the guide shaft via a linear bearing. A positioning pin is connected to the top of the front end of the sliding seat, and a connecting shaft is provided at the bottom of the sliding seat.

[0013] The guiding mechanism includes guide blocks. A guide block is provided on each side of the mounting plate. A guide groove is provided on the guide block. A rolling bearing is provided on the guide groove. The two ends of the connecting shaft are respectively inserted into the rolling bearings on the two guide blocks.

[0014] In some implementations...

[0015] A second limiting block is provided on the transition block corresponding to the positioning pin;

[0016] The flexible door ring welding and positioning fixture has a first proximity switch on the corresponding connecting block and / or a second proximity switch on the auxiliary panel connected to the corresponding sliding seat.

[0017] In some embodiments, the flexible door ring welding positioning fixture further includes a dust cover and / or a dust seal plate corresponding to the positioning pin lifting mechanism, wherein the dust seal plate has a first opening corresponding to the positioning pin lifting mechanism.

[0018] In some embodiments, the base includes a plurality of sub-bases arranged side by side, the direction in which the sub-bases are arranged side by side is perpendicular to the direction in which the electromagnets in the electromagnet assembly are arranged side by side.

[0019] In some implementations...

[0020] At least one end face of the positioning pin is a display screen;

[0021] The positioning pin is equipped with a current detector. When the product contacts the positioning pin, a circuit is formed between the product and the corresponding electromagnet and positioning pin. At this time, the corresponding current detector will detect a current signal feedback.

[0022] A dust collection box is installed below the first gap.

[0023] In some implementations...

[0024] The electromagnet assembly includes two electromagnets arranged side by side. Two sets of connecting frames are provided between the base and the electromagnet assembly to connect the electromagnet assembly. The two sets of connecting frames are respectively set for the two electromagnets in the electromagnet assembly. The two sets of connecting frames are the first set of connecting frames and the second set of connecting frames. The first set of connecting frames includes two first connecting frames, and the second set of connecting frames includes two second connecting frames. The positioning pin lifting mechanism is installed between the two first connecting frames.

[0025] In some implementations...

[0026] The first connecting frame and / or the second connecting frame are C-shaped plate components;

[0027] The two first connecting frames and the two second connecting frames are symmetrically distributed about the center line of the corresponding electromagnets;

[0028] The first and second connecting frames on the same side are arranged side by side;

[0029] A quick-change aviation plug is assembled between the two second connecting brackets.

[0030] In some embodiments, a second gap is provided between the first set of connecting frames and the second set of connecting frames. The second gap is located below the first gap and is interconnected. A dust collection box is provided at the second gap corresponding to the first gap. An auxiliary seat is added between the first connecting frame and the second connecting frame on the same side, corresponding to the dust collection box. The outer end of the auxiliary seat protrudes. The dust collection box is placed on the auxiliary seat, and the four sides of the dust collection box are in contact with the inner end face of the first connecting frame, the inner end face of the second connecting frame, and the protruding inner end face of the auxiliary seat.

[0031] Beneficial effects

[0032] The flexible door ring welding positioning fixture of the present invention uses only one lifting drive component to drive the positioning pin in both the lateral and lifting directions, which improves the positioning stability and reduces the cost; it adopts a point-to-surface positioning method to avoid over-positioning and manual positioning deviation, and has a function to detect whether the product is in place; it is equipped with a removable dust collection box for easy cleaning. Attached Figure Description

[0033] Figure 1 This is a structural schematic diagram from one side view of the flexible door ring welding and positioning fixture in some embodiments of the present invention;

[0034] Figure 2 This is a structural schematic diagram of the flexible door ring welding and positioning fixture from another side view in some embodiments of the present invention;

[0035] Figure 3This is a schematic diagram of the structure of the flexible door ring welding and positioning fixture for removing the dust cover in some embodiments of the present invention;

[0036] Figure 4 This is a schematic diagram of one side of the positioning pin lifting and traversing mechanism in some embodiments of the present invention;

[0037] Figure 5 This is a schematic diagram of the other side of the positioning pin lifting and traversing mechanism in some embodiments of the present invention;

[0038] Figure 6 This is a rear view of the positioning pin lifting and traversing mechanism in some embodiments of the present invention;

[0039] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure of AA. Detailed Implementation

[0040] To further clarify the purpose, technical solution, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings. The accompanying drawings are for simple and easy-to-read structural framework diagrams and do not limit the true purpose of the present invention.

[0041] Combination Figures 1 to 7 The embodiment presents a flexible door ring welding and positioning fixture, including an electromagnet assembly 7, a base 1, a positioning pin lifting mechanism 10, and positioning pins 1011. The base 1 is located at the bottom, and the electromagnet assembly 7 is located at the top. The positioning pin lifting mechanism 10 is provided between the base 1 and the electromagnet assembly 7. The electromagnet assembly 7 includes two electromagnets arranged side-by-side. A first mounting plate 2 can be mounted on the base 1. The electromagnet assembly 7 can be connected to the first mounting plate 2 via two sets of connecting frames. The two sets of connecting frames correspond to the two electromagnets in the electromagnet assembly 7, and are respectively a first set of connecting frames and a second set of connecting frames. The first set of connecting frames includes two first connecting frames 3, and the second set of connecting frames includes two second connecting frames 4. The positioning pin lifting mechanism 10 can be installed on the first mounting plate 2 between the two first connecting frames 3. The electromagnets in electromagnet group 7 have strong magnets after being energized. After the product is positioned, the corresponding electromagnet is energized, which can prevent the product from shifting during movement. When it is necessary to unload (remove the product), the corresponding electromagnet can be de-energized directly.

[0042] The first connecting frame 3 and / or the second connecting frame 4 mentioned above can be C-shaped plates. The two first connecting frames 3 and the two second connecting frames 4 can be symmetrically distributed about the center line of the corresponding electromagnets. The first connecting frames 3 and the second connecting frames 4 on the same side can be arranged side by side.

[0043] In some specific implementations, a quick-change aviation plug 8 can be installed on the first mounting plate 2 between the two second connecting frames 4.

[0044] In some specific implementations, the flexible door ring welding positioning fixture also includes a dust cover 6 and / or a dust sealing plate 9 corresponding to the positioning pin lifting mechanism 10. The dust sealing plate 9 has two ends connected to the inner sides (near the second connecting frame 4) of the two first connecting frames 3, respectively. The dust sealing plate 9 may have a first opening corresponding to the positioning pin lifting mechanism 10 to ensure its normal operation. The dust cover 6 is connected to the outer side (away from the second connecting frame 4) of the first connecting frame 3 and the first mounting plate 2. Since dust is generated during laser welding, the dust cover 6 and dust sealing plate 9 prevent a large amount of dust from entering the positioning pin lifting mechanism 10, thus protecting it.

[0045] In some specific implementations, the base 1 may include two sub-bases arranged side by side, and the direction in which the two sub-bases are arranged side by side may be perpendicular to the direction in which the two electromagnets in the electromagnet assembly 7 are arranged side by side. A first gap is provided between the two electromagnets, and a second gap is provided between the first set of connecting frames and the second set of connecting frames. The second gap is located below the first gap and is interconnected. A dust collection box 5 can be set at the second gap corresponding to the first gap. An auxiliary seat 15 can be added between the first and second connecting frames on the same side corresponding to the dust collection box 5 (the auxiliary seat 15 can be located below the middle of the first and second connecting frames). The outer side (the side away from the electromagnet group 7) of the auxiliary seat 15 protrudes. The dust collection box 5 is placed on the auxiliary seat 15, and the dust collection box 5 is in contact with the inner end face of the first connecting frame 3, the inner end face (the side closer to the first connecting frame 3) of the second connecting frame 4, and the inner end face (the side closer to the electromagnet group 7) of the protruding part on the auxiliary seat 15, so as to limit the position of the dust collection box 5 placed on the auxiliary seat 15 and prevent the dust collection box 5 from shifting (shaking) in the horizontal direction during the use of the flexible door ring welding positioning fixture. When a certain amount of dust accumulates in the dust collection box 5, the height of the dust collection box 5 can be manually raised to the height of the top of the protrusion on the auxiliary seat 15, so that the limiting effect of the protrusion on the dust collection box 5 is released. Then, the dust collection box 5 can be pulled out from the side for cleaning. This operation is quick and convenient.

[0046] The specific structure of the aforementioned positioning pin lifting mechanism 10 can be as follows: the positioning pin lifting mechanism 10 includes a lifting mechanism, a transverse sliding mechanism and a guide mechanism. The lifting mechanism is connected to the base 1, the lifting mechanism is connected to the transverse sliding mechanism, the transverse sliding mechanism is connected to the guide mechanism, and the positioning pin 1011 is set on the top of the transverse sliding mechanism. In this configuration, the lifting mechanism can be connected to the first mounting plate 2 on the base 1 via the base 1001. The base 1001 is provided with the mounting plate 1002. The lifting mechanism includes a lifting drive component 1003, a connecting block 1004, a linear guide rail 1005, a movable seat 1006, and a transition block 1007. The lifting drive component 1003 and the linear guide rail 1005 are respectively located on both sides of the mounting plate 1002. The bottom of the lifting drive component 1003 is provided with the connecting block 1004. The mounting plate 1002 is provided with a second opening corresponding to the connecting block 1004. The connecting block 1004 passes through the second opening to the other side of the mounting plate 1002 (the side where the linear guide rail 1005 is located). The linear guide rail 1005 is embedded with the movable seat 1006. One end of the connecting block 1004 passes through the second opening and is connected to the movable seat 1006. The other end of the connecting block 1004 is also connected to the transition block 1007. The lateral sliding mechanism includes a guide shaft 1008 and a sliding seat 1009. The guide shaft 1008 is mounted on the transition block 1007, and the sliding seat 1009 is sleeved on the guide shaft 1008 via a linear bearing. The sliding seat 1009 can slide on the guide shaft 1008 with the linear bearing. The front end of the sliding seat 1009 is connected to the connecting arm 1010 via a connecting seat 1016. The top of the connecting arm 1010 is connected to a positioning pin 1011. The lower part of the sliding seat 1009 is provided with a connecting shaft 1012. The guiding mechanism includes a guide block 1013. A guide block 1013 is provided on each side of the mounting plate 1002. The guide block 1013 is provided with a guide groove 1014. A rolling bearing is provided on the guide groove 1014. The two ends of the connecting shaft 1012 are respectively inserted into the rolling bearings on the two guide blocks 1013. The connecting shaft 1012 can slide in the guide groove 1014 with the rolling bearing.

[0047] The aforementioned lifting drive component 1003 can be a cylinder, or other mechanisms that can achieve lifting functions.

[0048] In some specific implementations, a first limit block 11 may be set on the base 1 corresponding to the lifting mechanism.

[0049] In some specific implementations, a second limiting block 1017 may be added to the transition block 1007, and the second limiting block 1017 may be set in a one-to-one correspondence with the positioning pin 1011.

[0050] In some specific implementations, a first proximity switch 16 may be set on the base 1001 corresponding to the connecting block 1004 and / or a second proximity switch 14 may be set on the auxiliary panel 1015 connected to the sliding seat 1009.

[0051] One end face of the aforementioned locating pin 1011 can be an arc surface. This design allows for better contact with the product and can reduce or even prevent the loss of reference when assembling products that are not on the same plane if the side end faces of the locating pin 1011 are all straight.

[0052] The aforementioned positioning pin 1011 is equipped with a current detector. When the product is close to the positioning pin 1011 (at which point the product and the positioning pin 1011 are in contact), a circuit is formed between the product, the corresponding electromagnet, and the positioning pin. At this time, the corresponding current detector will detect a current signal feedback, indicating that the material has been properly placed. Conversely, if the product is not in contact with the positioning pin 1011, the corresponding current detector will not detect a current signal feedback. This design enables automatic detection of whether the material has been properly placed.

[0053] The working principle of the above-mentioned flexible door ring welding and positioning fixture is as follows:

[0054] In the initial state, the lifting drive component 1003 is in the retracted state (at this time, the lifting rod at the bottom of the lifting drive component 1003 rises to the set highest position), triggering the descent mode (e.g., pressing the descent control button of the lifting drive component 1003). The lifting drive component 1003 first drives the connecting block 1004 to extend downwards, and the moving seat 1006, transition block 1007, etc. connected to the connecting block 1004 also descend accordingly. At the same time, under the action of the guide groove 1014, rolling bearing, guide shaft 1008, sliding seat 1009, connecting shaft 1012, etc., the connecting arm 1010, positioning pin 1011, etc. can first perform a vertical descent action, and after reaching a certain position, they will perform a horizontal inward movement while descending (this process can rely on the cooperation and guidance of the linear guide rail 1005, guide groove 1014, and guide shaft 1008) until it descends to the preset position. At this time, the bottom of the connecting block 1004 can contact the first limit block 11. When the up button is triggered, its operation is reversed, so that it moves upward and outward horizontally at the same time. When it rises to a certain position, it can only perform the upward movement.

[0055] When the operator loads the material, the system will automatically detect whether the material is properly positioned when the product is close to the positioning pin.

[0056] Once the product is detected to be in place, the descent mode is triggered to conceal the positioning pins and other components, preventing them from being burned during laser welding.

[0057] To meet the requirements of welding multiple plates, multiple of the above-mentioned flexible door ring welding and positioning fixtures can be combined to achieve compatibility with multiple products.

[0058] All matters not covered above can be implemented using existing technologies, and therefore will not be elaborated upon here.

[0059] The above description is merely a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several similar modifications and improvements can be made without departing from the inventive concept of the present invention, and these should also be considered within the scope of protection of the present invention.

Claims

1. A flexible door ring welding and positioning fixture, characterized in that, The device includes an electromagnet assembly, a base, a positioning pin lifting mechanism, and a positioning pin. The electromagnet assembly is positioned above the base, and the positioning pin is positioned at the top of the positioning pin lifting mechanism. The positioning pin lifting mechanism is positioned between the electromagnet assembly and the base, and its bottom is connected to the base. The electromagnet assembly includes multiple electromagnets, with a first gap between two adjacent electromagnets. The positioning pin lifting mechanism is positioned corresponding to the first gap. The positioning pin lifting mechanism includes a lifting mechanism, a lateral sliding mechanism, and a guide mechanism. The bottom of the lifting mechanism is connected to the base, the lifting mechanism is connected to the lateral sliding mechanism, the lateral sliding mechanism is connected to the guide mechanism, and the positioning pin is positioned at the top of the lateral sliding mechanism. The lifting mechanism includes a lifting drive component, a connecting block, a linear guide rail, a movable seat, and a transition block. The lifting drive component and the linear guide rail are respectively disposed on both sides of the mounting plate. The bottom of the lifting drive component is provided with a connecting block. The mounting plate is provided with a second opening corresponding to the connecting block. The connecting block passes through the second opening to the other side of the mounting plate. The linear guide rail is embedded with a movable seat. One end of the connecting block passes through the second opening and connects to the movable seat. The other end of the connecting block is connected to the transition block. The lateral sliding mechanism includes a guide shaft and a sliding seat. The guide shaft is mounted on a transition block, and the sliding seat is sleeved on the guide shaft via a linear bearing. A positioning pin is connected to the top of the front end of the sliding seat. A second limiting block is provided on the transition block corresponding to the positioning pin. A connecting shaft is provided at the lower part of the sliding seat. The guiding mechanism includes guide blocks, with one guide block on each side of the mounting plate. Each guide block has a guide groove, and a rolling bearing is provided in the guide groove. The two ends of the connecting shaft are respectively inserted into the rolling bearings on the two guide blocks. The flexible door ring welding and positioning fixture has a first proximity switch on the corresponding connecting block and / or a second proximity switch on the auxiliary panel connected to the corresponding sliding seat.

2. The flexible door ring welding and positioning fixture according to claim 1, characterized in that, The electromagnet assembly consists of multiple electromagnets arranged side by side. A first limit block is provided on the base corresponding to the lifting mechanism.

3. The flexible door ring welding and positioning fixture according to claim 1, characterized in that, The flexible door ring welding and positioning fixture also includes a dust cover and / or a dust seal plate corresponding to the positioning pin lifting mechanism, wherein the dust seal plate has a first opening corresponding to the positioning pin lifting mechanism.

4. The flexible door ring welding and positioning fixture according to claim 1, characterized in that, The base includes multiple sub-bases arranged side by side, and the direction in which the sub-bases are arranged side by side is perpendicular to the direction in which the electromagnets in the electromagnet assembly are arranged side by side.

5. The flexible door ring welding and positioning fixture according to any one of claims 1-4, characterized in that, At least one end face of the locating pin is an arc surface; The positioning pin is equipped with a current detector. When the product contacts the positioning pin, a circuit is formed between the product and the corresponding electromagnet and positioning pin. At this time, the corresponding current detector will detect a current signal feedback. A dust collection box is installed below the first gap.

6. The flexible door ring welding and positioning fixture according to claim 5, characterized in that, The electromagnet assembly includes two electromagnets arranged side by side. Two sets of connecting frames are provided between the base and the electromagnet assembly to connect the electromagnet assembly. The two sets of connecting frames are respectively set for the two electromagnets in the electromagnet assembly. The two sets of connecting frames are the first set of connecting frames and the second set of connecting frames. The first set of connecting frames includes two first connecting frames, and the second set of connecting frames includes two second connecting frames. The positioning pin lifting mechanism is installed between the two first connecting frames.

7. The flexible door ring welding and positioning fixture according to claim 6, characterized in that, The first connecting frame and / or the second connecting frame are C-shaped plate components; The two first connecting frames and the two second connecting frames are symmetrically distributed about the center line of the corresponding electromagnets; The first and second connecting frames on the same side are arranged side by side; A quick-change aviation plug is assembled between the two second connecting brackets.

8. The flexible door ring welding and positioning fixture according to claim 7, characterized in that, A second gap is provided between the first set of connecting frames and the second set of connecting frames. The second gap is located below the first gap and is interconnected. A dust collection box is provided at the second gap corresponding to the first gap. An auxiliary seat is added between the first and second connecting frames on the same side, corresponding to the dust collection box. The outer end of the auxiliary seat protrudes. The dust collection box is placed on the auxiliary seat, and the four sides of the dust collection box are in contact with the inner end face of the first connecting frame, the inner end face of the second connecting frame, and the protruding inner end face of the auxiliary seat.

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