Welding fixture for a product

Abstract

The utility model relates to part positioning technical field, and disclose a kind of welding positioning device of product, including positioning assembly;Part is fixed fixed component;The adjusting component of adjusting welding height;The positioning assembly includes: base;First magnet is set in the inside of base middle;And second magnet is set in the upper end of base early;The fixed component includes: second limit block is installed in the inside of base early;The adjusting component includes: lifting plate is fixed in the lower end of first magnet;And second adjusting plate is connected in the lower end of lifting plate early by pivot.This utility model is fixed by first magnet and second magnet respectively to the reference element of sleeve setting in reference column, the counter hand piece of sleeve setting in counter column realizes adsorption pre-fixing, simultaneously utilize the step difference structure formed by reference column and counter column, further promote the stability of counter hand piece placement, solve the problem of low precision, poor stability of traditional manual positioning.

Description

Technical Field

[0001] This utility model relates to the field of parts positioning technology, specifically a welding positioning device for a product. Background Technology

[0002] In the manufacturing process of automotive parts, it is often necessary to weld two independent parts together to form an integrated component to meet the structural strength and functional requirements of automotive assembly. These two parts typically have corresponding mating holes for subsequent assembly and connection with other automotive components. However, in actual production, the diameters of the mating holes on the two parts often differ, posing a challenge to welding positioning. Existing technical solutions still have some shortcomings in practical implementation: Firstly, traditional positioning methods rely heavily on manual adjustment of the part's posture, visually aligning the hole edges. This not only results in low positioning accuracy but also requires at least two operators—one to hold the part steady and the other to observe the alignment. Alignment of a single set of parts is time-consuming, leading to low production efficiency. Furthermore, manual adjustments result in poor consistency, with different operators using different alignment standards, leading to a high rate of defects such as weld undercut and incomplete penetration. Secondly, general-purpose fixtures can only fix the outer contour of the part and cannot achieve precise positioning for overlapping holes with different diameters. Large holes are prone to gaps between the fixture and the fixture, while small holes may be deformed due to interference fit. During the welding process, the part is affected by thermal stress or vibration, and the hole position is prone to displacement, which directly leads to weld misalignment and a decrease in weld strength compared to precise positioning. This poses a safety hazard of weld cracking while the car is in motion. Therefore, it is important to design a welding positioning device that can quickly position the welding.

[0003] The existing device can only fix the outer contour of the part and cannot achieve precise positioning for overlapping holes with different diameters. Different hole diameters result in no matching support for the hole wall, which easily leads to large holes wobbling and small holes deviating during positioning. Welding thermal deformation will further amplify the hole position offset. In addition, there is no special hole position constraint structure, and the part is easy to rotate around the outer contour fixture, resulting in relative angle deviation of overlapping holes. During subsequent assembly, the bolt cannot be inserted smoothly and additional hole reaming correction is required. This not only increases the process cost, but may also weaken the strength of the hole periphery structure due to insufficient machining allowance. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] Given that the existing technology can only fix the outer contour of the part and cannot achieve precise positioning for overlapping holes with different hole diameters, the different hole diameters result in no matching support for the hole wall. During positioning, large holes are prone to wobbling and small holes are prone to deviation. Welding thermal deformation will further amplify the hole position offset. In addition, there is no special hole position constraint structure, and the part is prone to rotating around the outer contour fixture, resulting in relative angle deviation of overlapping holes. During subsequent assembly, bolts cannot be smoothly inserted and additional hole reaming correction is required. This not only increases the process cost, but may also weaken the strength of the hole periphery structure due to insufficient machining allowance.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A welding positioning device for a product includes a positioning component; a fixing component for fixing parts; and an adjusting component for adjusting the welding height.

[0008] The positioning component includes: a base; a first magnet disposed in the center of the base; and a second magnet disposed at the front of the upper end of the base;

[0009] The fixing component includes: a second limiting block installed inside the base at the front; and a first limiting block engaged with a groove on the surface of the second limiting block;

[0010] The adjustment assembly includes: a lifting plate fixed to the lower end of the first magnet; and a second adjustment plate connected to the lower front of the lifting plate via a rotating shaft.

[0011] As a further embodiment of this utility model, the positioning component further includes: a reference post and a counter post; the reference post is welded to the upper end of the second limiting block; the counter post is disposed at the upper end of the reference post.

[0012] As a further embodiment of this utility model: the positioning component further includes: a counter piece and a reference piece; the counter piece is sleeved on the surface of the counter post; the reference piece is sleeved on the surface of the reference post.

[0013] As a further embodiment of this utility model: the fixing component further includes: a threaded post; the threaded post is threadedly connected to the inside of the reference post, and the upper end of the threaded post is fixed to the opponent post.

[0014] As a further embodiment of this utility model: the fixing component further includes: a pull rod and a return spring; the pull rod is welded to the front side of the first limiting block near the center; the return spring is disposed on the left and right sides of the pull rod, and one end of the return spring is fixed to the first limiting block.

[0015] As a further improvement of this utility model, the fixing component further includes a cylinder; the cylinder is disposed at the upper and lower ends of the hand piece, and the telescopic rod of the cylinder clamps the hand piece and the reference piece.

[0016] As a further embodiment of this utility model: the adjustment assembly further includes: a second connecting block and a first adjusting plate; the second connecting block is connected to the lower end of the second adjusting plate via a rotating shaft; the first adjusting plate is connected to the lower rear end of the lifting plate via a rotating shaft.

[0017] As a further embodiment of this utility model: the adjustment assembly further includes: a first connecting block and an adjusting screw; the first connecting block is connected to the lower end of the first adjusting plate via a rotating shaft; the adjusting screw is threadedly connected to the interior of the first connecting block, and the adjusting screw passes through the first connecting block and the second connecting block.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model uses a first magnet and a second magnet to adsorb and pre-fix the reference component sleeved on the reference post and the opponent component sleeved on the opponent post, respectively. At the same time, it utilizes the stepped drop structure formed by the reference post and the opponent post to further improve the placement stability of the opponent component, thus solving the problems of low accuracy and poor stability of traditional manual positioning.

[0020] 2. This utility model applies clamping force to the upper and lower ends of the hand piece by means of a cylinder. With the help of the pull rod, the return spring and the first and second limit blocks, it can not only achieve a stable lock between the reference piece and the hand piece, but also quickly complete the unlocking and self-locking of the reference column. The hand column is connected to the reference column by a threaded column, which facilitates the replacement of columns with different hole diameters and improves the adaptability and operating efficiency of the device.

[0021] 3. This utility model uses an adjusting screw to drive the first connecting block and the second connecting block to move relative to each other, which in turn drives the first adjusting plate and the second adjusting plate to push the lifting plate and the first magnet fixed thereon to move up and down. This allows for flexible adjustment of the distance between the reference part and the opponent part, adapting to changes in the thickness of the reference part and ensuring that the parts to be welded are always precisely aligned, thus avoiding welding misalignment problems caused by thickness differences. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the welding positioning device structure of a product according to the present invention;

[0023] Figure 2 This is a side sectional view of a welding positioning device for a product according to this utility model;

[0024] Figure 3 This is a top view of a partial structure of a welding positioning device for a product according to this utility model;

[0025] Figure 4 This is a partial cross-sectional view of the positioning component of this utility model;

[0026] Figure 5 This is a partial cross-sectional view of the fixing component of this utility model.

[0027] In the diagram: 1. Positioning component; 101. Base; 102. First magnet; 103. Second magnet; 104. Reference component; 105. Opposite component; 106. Reference post; 107. Opposite post; 2. Fixing component; 201. Threaded post; 202. Pull rod; 203. Return spring; 204. First limit block; 205. Second limit block; 206. Cylinder; 3. Adjusting component; 301. Adjusting screw; 302. First connecting block; 303. Second connecting block; 304. First adjusting plate; 305. Second adjusting plate; 306. Lifting plate. Detailed Implementation

[0028] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0031] Example 1:

[0032] Please see Figures 1-5 This is the first embodiment of the present utility model.

[0033] This embodiment provides a welding positioning device for a product, including a positioning component 1; a fixing component 2 for fixing parts; and an adjusting component 3 for adjusting the welding height.

[0034] Positioning component 1 includes: a base 101; a first magnet 102 disposed in the center of the base 101; and a second magnet 103 disposed at the front of the upper end of the base 101;

[0035] The fixing component 2 includes: a second limiting block 205 installed inside the base 101 at the front; and a first limiting block 204 engaged in a groove on the surface of the second limiting block 205;

[0036] The adjustment assembly 3 includes: a lifting plate 306 fixed to the lower end of the first magnet 102; and a second adjustment plate 305 connected to the lower front of the lifting plate 306 via a rotating shaft.

[0037] Specifically, the positioning component 1 also includes: a reference post 106 and a counter post 107; the reference post 106 is welded to the upper end of the second limiting block 205; the counter post 107 is disposed on the upper end of the reference post 106.

[0038] Furthermore, the diameter of the reference post 106 is adapted to the diameter of the reference part 104, and the diameter of the hand post 107 is adapted to the diameter of the hand part 105.

[0039] Specifically, the positioning component 1 also includes: a counter part 105 and a reference part 104; the counter part 105 is fitted onto the surface of the counter post 107; the reference part 104 is fitted onto the surface of the reference post 106.

[0040] Furthermore, the hole of the reference component 104 is fitted onto the surface of the reference post 106, and the hole of the opponent component 105 is fitted onto the surface of the opponent post 107. With the help of the stepped drop structure between the opponent post 107 and the reference post 106, the placement stability of the opponent component 105 is further improved.

[0041] Specifically, the fixing component 2 also includes: a threaded post 201; the threaded post 201 is threadedly connected to the inside of the reference post 106, and the upper end of the threaded post 201 is fixed to the opposing post 107.

[0042] Furthermore, the counter post 107 is threadedly connected to the reference post 106 via the threaded post 201.

[0043] In use, the parts are first initially fixed by fitting the hole of the reference part 104 onto the surface of the reference post 106. The first magnet 102 then generates a magnetic force to attract and pre-fix the reference part 104. Next, the hole of the opponent part 105 is fitted onto the surface of the opponent post 107. The second magnet 103 generates a magnetic force simultaneously to achieve initial attraction and fixation of the opponent part 105. At the same time, the stepped drop structure between the opponent post 107 and the reference post 106 further enhances the placement stability of the opponent part 105.

[0044] In summary, this utility model uses the first magnet 102 and the second magnet 103 to achieve adsorption and pre-fixation of the reference component 104 sleeved on the reference post 106 and the opponent component 105 sleeved on the opponent post 107, respectively. At the same time, the stepped drop structure formed by the reference post 106 and the opponent post 107 is used to further improve the placement stability of the opponent component 105, thus solving the problems of low accuracy and poor stability of traditional manual positioning.

[0045] Example 2:

[0046] Please see Figures 1-5 This is the second embodiment of the present utility model.

[0047] Specifically, the fixing component 2 also includes: a pull rod 202 and a return spring 203; the pull rod 202 is welded to the front side of the first limiting block 204 near the center; the return spring 203 is disposed on the left and right sides of the pull rod 202, and one end of the return spring 203 is fixed to the first limiting block 204.

[0048] Furthermore, pulling the lever 202 causes the first limiting block 204 to move within the groove on the surface of the second limiting block 205, during which the return spring 203 is compressed.

[0049] Specifically, the fixing component 2 also includes a cylinder 206; the cylinder 206 is disposed at the upper and lower ends of the hand piece 105, and the telescopic rod of the cylinder 206 clamps the hand piece 105 and the reference piece 104.

[0050] Furthermore, the cylinder 206 is activated, its telescopic rod extends and applies clamping force to the hand piece 105 and the reference piece 104 respectively, thereby achieving a stable lock between the two.

[0051] Specifically, the adjustment component 3 also includes: a second connecting block 303 and a first adjusting plate 304; the second connecting block 303 is connected to the lower end of the second adjusting plate 305 via a rotating shaft; the first adjusting plate 304 is connected to the lower rear end of the lifting plate 306 via a rotating shaft.

[0052] Furthermore, the internal threads of the first connecting block 302 and the second connecting block 303 are opposite.

[0053] Specifically, the adjustment assembly 3 also includes: a first connecting block 302 and an adjusting screw 301; the first connecting block 302 is connected to the lower end of the first adjusting plate 304 via a rotating shaft; the adjusting screw 301 is threadedly connected to the inside of the first connecting block 302, and the adjusting screw 301 passes through the first connecting block 302 and the second connecting block 303.

[0054] Furthermore, the adjusting screw 301, being threadedly connected to the first connecting block 302 and passing through the second connecting block 303, will cause the two connecting blocks to move relative to each other.

[0055] In use, after initial fixing, cylinder 206 is activated, its telescopic rod extends and applies clamping force to the opposing part 105 and the reference part 104 respectively, achieving a stable lock between the two and preventing displacement during welding. When the thickness of the reference part 104 changes, the welding height is adjusted by adjusting component 3 to ensure alignment of the parts to be welded. Rotating the adjusting screw 301 causes the two connecting blocks to move relative to each other due to the opposite internal threads of the first connecting block 302 and the second connecting block 303. This, in turn, drives the first adjusting plate 304 and the second adjusting plate 305 to rotate around their respective axes, pushing the lifting plate 306 connected to the adjusting plate to move up and down. Since the lifting plate 306 is fixed to the lower end of the first magnet 102, the first magnet 102 will adjust its height synchronously with the lifting plate 306, ultimately adjusting the distance between the reference part 104 and the opposing part 105 to ensure precise alignment of the parts to be welded. If the apertures of the reference component 104 and the opposing component 105 change, the matching opposing post 107 and reference post 106 are replaced using the fixing assembly 2. When replacing the reference post 106, pulling the pull rod 202 causes the first limiting block 204 to move within the groove on the surface of the second limiting block 205. During this process, the return spring 203 is compressed until the first limiting block 204 disengages from the groove, unlocking the reference post 106. The old reference post 106 can then be directly removed and the new reference post 106 inserted. After releasing the pull rod 202, the return spring 203 rebounds, causing the first limiting block 204 to return to its original position. When the lower end of the new reference post 106... When the second limiting block 205 contacts the arc-shaped edge at the upper rear end of the first limiting block 204, it will push it back. When the first limiting block 204 is aligned with the groove, the first limiting block 204 is engaged in the groove under the push of the return spring 203. The right-angled edge at the lower rear end of the first limiting block 204 forms a locking limit on the second limiting block 205 to prevent the reference post 106 from disengaging, thus completing the self-locking fixation of the reference post 106. The hand post 107 is threadedly connected to the reference post 106 through the threaded post 201. The hand post 107 can be directly screwed to achieve disassembly and replacement. After replacement, subsequent parts fixing and welding operations can be performed.

[0056] In summary, this invention applies clamping force to the upper and lower ends of the actuator 105 using the cylinder 206. Combined with the engagement and limiting action of the pull rod 202, the return spring 203, and the first and second limiting blocks 204 and 205, it achieves a stable lock between the reference component 104 and the actuator 105, and also quickly unlocks and self-locks the reference post 106. The actuator 107 is threaded to the reference post 106 via the threaded post 201, facilitating the replacement of posts with different hole diameters and improving the device's adaptability and operational efficiency. Furthermore, by adjusting the lead screw 301, this invention drives the relative movement of the first connecting block 302 and the second connecting block 303, which in turn drives the first adjusting plate 304 and the second adjusting plate 305 to move the lifting plate 306 and the first magnet 102 fixed thereon up and down. This allows for flexible adjustment of the distance between the reference component 104 and the actuator 105, adapting to variations in the thickness of the reference component 104 and ensuring precise alignment of the parts to be welded, thus avoiding welding misalignment caused by thickness differences.

[0057] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0058] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0059] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A welding positioning device for a product, characterized in that: include: Positioning component (1); Fixing assembly (2) for securing parts; Adjustment component (3) for adjusting welding height; The positioning component (1) includes: a base (101); a first magnet (102) disposed in the center of the base (101); and a second magnet (103) disposed at the front of the upper end of the base (101); The fixing component (2) includes: a second limiting block (205) installed in the front of the base (101); and a first limiting block (204) engaged in a groove on the surface of the second limiting block (205); The adjustment assembly (3) includes: a lifting plate (306) fixed to the lower end of the first magnet (102); and a second adjustment plate (305) connected to the lower front of the lifting plate (306) via a rotating shaft.

2. The welding positioning device for a product according to claim 1, characterized in that: The positioning component (1) further includes: a reference post (106) and a counter post (107); the reference post (106) is welded to the upper end of the second limiting block (205); the counter post (107) is disposed on the upper end of the reference post (106).

3. The welding positioning device for a product according to claim 2, characterized in that: The positioning component (1) further includes: a counter part (105) and a reference part (104); the counter part (105) is fitted onto the surface of the counter post (107); the reference part (104) is fitted onto the surface of the reference post (106).

4. The welding positioning device for a product according to claim 2, characterized in that: The fixing component (2) further includes a threaded post (201); the threaded post (201) is threadedly connected to the interior of the reference post (106), and the upper end of the threaded post (201) is fixed to the opposing post (107).

5. The welding positioning device for a product according to claim 1, characterized in that: The fixing component (2) further includes: a pull rod (202) and a return spring (203); the pull rod (202) is welded to the front center of the first limiting block (204); the return spring (203) is disposed on the left and right sides of the pull rod (202), and one end of the return spring (203) is fixed to the first limiting block (204).

6. The welding positioning device for a product according to claim 3, characterized in that: The fixing component (2) further includes a cylinder (206); the cylinder (206) is disposed at the upper and lower ends of the hand piece (105), and the telescopic rod of the cylinder (206) clamps the hand piece (105) and the reference piece (104).

7. The welding positioning device for a product according to claim 1, characterized in that: The adjustment component (3) further includes: a second connecting block (303) and a first adjusting plate (304); the second connecting block (303) is connected to the lower end of the second adjusting plate (305) via a rotating shaft; the first adjusting plate (304) is connected to the lower rear end of the lifting plate (306) via a rotating shaft.

8. The welding positioning device for a product according to claim 7, characterized in that: The adjustment assembly (3) further includes: a first connecting block (302) and an adjusting screw (301); the first connecting block (302) is connected to the lower end of the first adjusting plate (304) via a rotating shaft; the adjusting screw (301) is threadedly connected to the inside of the first connecting block (302), and the adjusting screw (301) passes through the first connecting block (302) and the second connecting block (303).

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