Flexible welding jig for automobile wheel cover

Abstract

The application provides a flexible welding jig for a car wheel cover and belongs to the technical field of car parts. The flexible welding jig comprises a base plate, a plurality of pressing mechanisms installed on the base plate, each of the pressing mechanisms comprising a pressing cylinder, a support block, and a pressing block, wherein the support planes on the plurality of support blocks are spliced to form a support platform; a positioning moving mechanism installed on the base plate and comprising a moving cylinder and a positioning cylinder, wherein a positioning pin is arranged on a positioning plate; and a supporting limiting mechanism installed on the base plate and comprising a limiting cylinder and a supporting cylinder, wherein the output ends of the supporting cylinder are provided with two supporting parts arranged in a vertical direction in an up-down mode, and each of the output ends is connected with a supporting part. The supporting part improves the reliability and quality of the welding between the wheel cover support and the wheel cover body, thereby improving the qualified rate of the product.

Description

Technical Field

[0001] This invention belongs to the field of automotive parts technology and relates to a welding fixture, particularly a flexible welding fixture for automotive wheel covers. Background Technology

[0002] like Figure 1 and Figure 2 As shown in the figure, this is a car wheel cover, which includes a wheel cover bracket 100 and a wheel cover body 200, wherein the wheel cover bracket 100 and the wheel cover body 200 are connected by welding. The wheel cover bracket 100 is roughly C-shaped, and the welding points between the wheel cover bracket 100 and the wheel cover body 200 are located on both sides 110 of the open end of the wheel cover bracket 100. Because the two sides 110 of the open end of the wheel cover bracket 100 are unsupported, during welding, the two sides 110 of the open end of the wheel cover bracket 100 will tilt downwards after welding, resulting in a weak weld. Furthermore, the two sides 110 of the open end of the wheel cover bracket 100 are prone to weld breakage, affecting the product quality of the car wheel cover and reducing the product qualification rate. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a welding fixture that can provide support during the welding of the wheel cover bracket and the wheel cover body, thereby improving welding quality and product qualification rate.

[0004] The objective of this invention can be achieved through the following technical solution: a flexible welding fixture for automobile wheel arches, comprising:

[0005] A base plate is provided, and multiple clamping mechanisms are mounted on the base plate. Each clamping mechanism includes a clamping cylinder, and a support block is connected to the cavity of the clamping cylinder. The output end of the clamping cylinder is rotatably connected to the clamping block. The support planes on the multiple support blocks are at the same horizontal height, forming a support platform for supporting and positioning the wheel cover body. The wheel cover body is fixed to the support platform by the multiple clamping blocks.

[0006] A positioning and moving mechanism is mounted on a base plate and includes a moving cylinder and a positioning cylinder. The output end of the moving cylinder is connected to the positioning cylinder, and the output end of the positioning cylinder is provided with a positioning plate. A positioning pin is provided on the positioning plate to engage with the positioning hole on the wheel cover bracket. The positioning pin completes the pre-positioning of the wheel cover bracket on the positioning plate. Then, the moving cylinder drives the positioning plate to move in a direction close to the wheel cover body through the positioning cylinder, and inserts the wheel cover bracket into the cavity of the wheel cover body.

[0007] The opening and limiting mechanism is installed on the base plate and is located on both sides of the support platform, along with the positioning and moving mechanism. The opening and limiting mechanism includes a limiting cylinder and an opening cylinder. The output end of the limiting cylinder is connected to the opening cylinder. The opening cylinder has two output ends, which are arranged vertically. Each output end is connected to an opening part. The limiting cylinder drives the opening cylinder to insert the opening part into the wheel cover bracket. Then, the opening cylinder drives the corresponding opening parts on the two output ends to move in opposite directions, so that the two sides of the open end of the wheel cover bracket and the side of the closed end of the wheel cover bracket are tightly fitted with the cavity wall corresponding to the cavity.

[0008] In the aforementioned flexible welding fixture for automobile wheel covers, the output end of the expanding cylinder is provided with a first connecting plate and a second connecting plate connected to the first connecting plate. The expanding part includes an expanding member connected to the second connecting plate, wherein there is a height difference between the first connecting plate and the expanding member.

[0009] In the aforementioned flexible welding fixture for an automobile wheel arch, the supporting component includes a supporting block and a limiting block, and the supporting block and the limiting block are connected by an elastic element. The relative movement between the supporting block and the limiting block is achieved by the elastic force of the elastic element. A limiting step is provided at the end of the limiting block away from the elastic element. When the supporting component extends into the wheel arch bracket, a contact abutment is simultaneously formed between the limiting step and the edge of the side of the open end of the wheel arch bracket, and between the limiting step and the edge of the side of the closed end of the wheel arch bracket.

[0010] In the aforementioned flexible welding fixture for automobile wheel covers, a first limiting groove is provided on the limiting block along its moving direction, and a second limiting groove is provided on the expanding block along a direction perpendicular to the moving direction of the limiting block. The first limiting groove and the second limiting groove are connected. The expanding member also includes a limiting plunger, which is nested in the second limiting groove and abuts against the groove wall of the first limiting groove.

[0011] In the above-mentioned flexible welding fixture for automobile wheel arches, the spreading block includes an inclined block and a horizontal block arranged vertically, and the limiting block includes a movable block that is inserted into the horizontal block and a contact block that abuts against the side of the open end of the wheel arch bracket or the side of the closed end of the wheel arch. The limiting step is located at the junction of the movable block and the contact block, the first limiting groove is located on the movable block, and an elastic element is held between the horizontal block and the movable block.

[0012] In the above-mentioned flexible welding fixture for automobile wheel covers, auxiliary components are arranged side by side on one side of the supporting component, and one end of the auxiliary component connected to the second connecting plate is arranged obliquely, while the other end of the auxiliary component that contacts the side of the open end of the wheel cover bracket or the side of the closed end of the wheel cover bracket is arranged horizontally.

[0013] In the aforementioned flexible welding fixture for automobile wheel covers, the cylinder body of the limiting cylinder is mounted on the limiting base via a limiting support plate. The closed end of the limiting base is mounted on the base plate, and the two sides of the open end of the limiting base are respectively connected to a first sliding structure. A third connecting plate connected to the expanding cylinder is connected to the first sliding structure, and the output end of the piston rod of the limiting cylinder is connected to the third connecting plate via a fourth connecting plate.

[0014] In the aforementioned flexible welding fixture for automotive wheel covers, two limiting baffles are provided on the movement trajectory of the piston rod of the limiting cylinder. One limiting baffle is installed on the limiting base, and the other limiting baffle is installed on the base plate. The maximum stroke that the piston rod can extend is controlled by the limiting baffle installed on the limiting base, and the maximum stroke that the piston rod can retract is controlled by the limiting baffle installed on the base plate.

[0015] In the aforementioned flexible welding fixture for automotive wheel covers, a movable cylinder is mounted on a movable base via a movable support plate. One end of the movable base is mounted on a base plate, and the other end of the movable base is connected to a second sliding structure. A transition plate connected to a positioning cylinder is connected to the second sliding structure. The transition plate is L-shaped, with one end connected to the cylinder body of the movable cylinder and the other end connected to the piston rod of the movable cylinder.

[0016] In the aforementioned flexible welding fixture for automobile wheel covers, two movable baffles are provided on the moving trajectory of the piston rod of the movable cylinder, and the two movable baffles are respectively installed at both ends of the movable base. The maximum stroke of the piston rod of the movable cylinder can be controlled by the two movable baffles.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] (1) The present invention provides a flexible welding fixture for automobile wheel covers. By controlling the relative distance between the open end side and the closed end side of the wheel cover bracket through the expansion part, after the wheel cover bracket and the wheel cover body form an insertion fit, the open end side and the closed end side of the wheel cover bracket are respectively tightly fitted to the cavity wall of the corresponding wheel cover body cavity, thereby improving the reliability and quality of welding between the wheel cover bracket and the wheel cover body, and thus improving the product qualification rate.

[0019] (2) The expansion cylinder is set vertically, and the two output ends are located at both ends of the expansion cylinder in the vertical direction. Through the first connecting plate and the second connecting plate, there is a height difference between the expansion component and the output end of the expansion cylinder. This makes the relative distance between the upper and lower expansion components no longer limited by the length of the expansion cylinder itself, thereby reducing the relative distance between the two expansion components in the unopened state and adapting to the welding operation of car wheel covers of different specifications and sizes.

[0020] (3) The wheel cover bracket’s freedom in the horizontal direction is limited by the contact abutment between the limiting step and the side edge of the open end of the wheel cover bracket, the limiting step and the side edge of the closed end of the wheel cover bracket, and the insertion fit between the positioning pin on the positioning plate and the positioning hole on the wheel cover bracket. Since the wheel cover body is clamped between the support platform and the clamping block, and the wheel cover bracket and the wheel cover body form an insertion fit, and the two sides of the open end and the side of the closed end of the wheel cover bracket abut against the two cavity walls of the cavity of the wheel cover body respectively through the expansion block, the wheel cover bracket’s freedom in the vertical direction is limited, thereby improving the reliability of the welding between the wheel cover bracket and the wheel cover body.

[0021] (4) The horizontal stroke of the limiting block is limited by the limiting plunger and the stroke is within 10mm. This ensures that the limiting boss on the limiting block can abut against the edge of the wheel cover bracket side, thereby limiting the degree of freedom of the wheel cover bracket in the horizontal direction and improving the reliability of the welding between the wheel cover bracket and the wheel cover body.

[0022] (5) By setting elastic elements, the limiting step can form a “flexible contact” when it comes into contact with the edge of the open end side of the wheel cover bracket or the edge of the closed end side of the wheel cover bracket, thus avoiding a hard collision between the limiting block and the edge of the wheel cover bracket. In addition, when the limiting step retracts after hitting the edge of the wheel cover bracket, the inclined surface of the inclined block can block the “reverse movement” of the limiting step, thereby further controlling the movement stroke of the limiting block and improving the reliability and quality of the welding between the wheel cover bracket and the wheel cover body.

[0023] (6) By setting auxiliary components, it is further ensured that when the wheel cover bracket is welded to the wheel cover body, the side of the open end of the wheel cover bracket and the side of the closed end of the wheel cover bracket can be tightly fitted to the corresponding cavity wall, thereby further improving the reliability and quality of welding. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a car wheel arch in the prior art.

[0025] Figure 2 This is a structural schematic diagram of a car wheel arch from another perspective in the existing technology.

[0026] Figure 3 This is a schematic diagram of the structure of a flexible welding fixture for automobile wheel covers according to the present invention.

[0027] Figure 4 This is a partial structural schematic diagram of a flexible welding fixture for automobile wheel covers according to the present invention.

[0028] Figure 5 This is a structural schematic diagram of the pressing mechanism and the wheel cover body in a preferred embodiment of the present invention.

[0029] Figure 6 This is a schematic diagram of the positioning and moving mechanism in a preferred embodiment of the present invention.

[0030] Figure 7 yes Figure 6 The diagram shows a structural schematic of the positioning and moving mechanism from another perspective.

[0031] Figure 8 This is a schematic diagram of the structure of the opening and limiting mechanism in a preferred embodiment of the present invention.

[0032] Figure 9 yes Figure 8 The diagram shows a structural schematic of the limiting mechanism from another perspective.

[0033] Figure 10 yes Figure 8 The diagram shown is a third-view structural schematic of the limiting mechanism.

[0034] Figure 11 yes Figure 10 The cross-sectional view of AA is shown.

[0035] Figure 12 yes Figure 11 Enlarged view of section A.

[0036] In the figure, 100 is the wheel cover bracket; 110 is the side; 120 is the positioning hole; 200 is the wheel cover body; 210 is the cavity; 300 is the base plate; 400 is the clamping mechanism; 410 is the clamping cylinder; 420 is the support block; and 430 is the clamping block.

[0037] 500. Positioning and moving mechanism; 510. Moving cylinder; 511. Moving support plate; 512. Moving base; 513. Second sliding structure; 514. Adapter plate; 515. Moving baffle; 520. Positioning cylinder; 521. Positioning plate; 522. Positioning pin;

[0038] 600. Spreading and limiting mechanism; 610. Limiting cylinder; 611. Limiting support plate; 612. Limiting base; 613. First sliding structure; 614. Third connecting plate; 615. Fourth connecting plate; 616. Limiting baffle; 620. Spreading cylinder; 621. First connecting plate; 622. Second connecting plate; 623. Spreading component; 6231. Spreading block; 62311. Second limiting groove; 62312. Inclined block; 62313. Horizontal block; 6232. Limiting block; 62321. Limiting step; 62322. First limiting groove; 62323. Moving block; 62324. Contact block; 6233. Elastic component; 6234. Limiting plunger; 624. Auxiliary component. Detailed Implementation

[0039] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0040] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0041] like Figure 1 and Figure 2 As shown, the existing automotive wheel cover includes a wheel cover bracket 100 and a wheel cover body 200. The wheel cover bracket 100 is C-shaped, and the wheel cover body 200 is strip-shaped. A cavity 210 is formed on the wheel cover body 200 along its thickness direction, and the wheel cover bracket 100 is nested in the cavity 210. The two sides 110 of the open end of the wheel cover bracket 100 contact one side wall of the cavity 210, and the side 110 of the closed end of the wheel cover bracket 100 contacts the other side wall of the cavity 210. The contact position between the two sides 110 of the open end of the wheel cover and the corresponding cavity wall of the cavity 210 is the first welding position, and the contact position between the side 110 of the closed end of the wheel cover and the corresponding cavity wall of the cavity 210 is the second welding position.

[0042] like Figures 1 to 12 As shown, the present invention provides a flexible welding fixture for automobile wheel covers, comprising:

[0043] A base plate 300 is provided, and multiple clamping mechanisms 400 are mounted on the base plate 300. Each clamping mechanism 400 includes a clamping cylinder 410, and a support block 420 is connected to the cavity of the clamping cylinder 410. The output end of the clamping cylinder 410 is rotatably connected to the clamping block 430. The support planes on the multiple support blocks 420 are at the same horizontal height, forming a support platform for supporting and positioning the wheel cover body 200. The wheel cover body 200 is fixed to the support platform by the multiple clamping blocks 430.

[0044] A positioning and moving mechanism 500 is mounted on a base plate 300. The positioning and moving mechanism 500 includes a moving cylinder 510 and a positioning cylinder 520. The output end of the moving cylinder 510 is connected to the positioning cylinder 520. The output end of the positioning cylinder 520 is provided with a positioning plate 521. A positioning pin 522 is provided on the positioning plate 521 to engage with the positioning hole 120 on the wheel cover bracket 100. The positioning pin 522 completes the pre-positioning of the wheel cover bracket 100 on the positioning plate 521. Then, the moving cylinder 510 drives the positioning plate 521 to move in a direction close to the wheel cover body 200 via the positioning cylinder 520, and inserts the wheel cover bracket 100 into the cavity 210 of the wheel cover body 200.

[0045] The opening and limiting mechanism 600 is mounted on the base plate 300 and is located on both sides of the support platform, respectively, along with the positioning and moving mechanism 500. The opening and limiting mechanism 600 includes a limiting cylinder 610 and an opening cylinder 620. The output end of the limiting cylinder 610 is connected to the opening cylinder 620. The opening cylinder 620 has two output ends, which are arranged vertically. Each output end is connected to an opening part. The limiting cylinder 610 drives the opening cylinder 620 to insert the opening part into the wheel cover bracket 100. Then, the opening cylinder 620 drives the corresponding opening parts on the two output ends to move in opposite directions, so that the two sides 110 of the open end of the wheel cover bracket 100 and the side 110 of the closed end of the wheel cover bracket 100 are tightly fitted with the cavity wall of the cavity 210, respectively.

[0046] The present invention provides a flexible welding fixture for automobile wheel covers. By controlling the relative distance between the open end side 110 and the closed end side 110 of the wheel cover bracket 100 through the expansion part, after the wheel cover bracket 100 and the wheel cover body 200 form an interlocking fit, the open end side 110 and the closed end side 110 of the wheel cover bracket 100 respectively fit tightly against the cavity wall of the corresponding cavity 210 of the wheel cover body 200, thereby improving the reliability and quality of the welding between the wheel cover bracket 100 and the wheel cover body 200, and thus improving the product qualification rate.

[0047] Preferably, the output end of the expanding cylinder 620 is provided with a first connecting plate 621 and a second connecting plate 622 connected to the first connecting plate 621, and the expanding part includes an expanding member 623 connected to the second connecting plate 622, wherein there is a height difference between the first connecting plate 621 and the expanding member 623.

[0048] In this embodiment, the expansion cylinder 620 is vertically arranged, and the two output ends are located at both ends of the expansion cylinder 620 in the vertical direction. Through the first connecting plate 621 and the second connecting plate 622, there is a height difference between the expansion member 623 and the output end of the expansion cylinder 620. This makes the relative distance between the upper and lower expansion members 623 no longer limited by the length of the expansion cylinder 620 itself, thereby reducing the relative distance between the two expansion members 623 in the unopened state and adapting to the welding operation of car wheel covers of different specifications and sizes.

[0049] More preferably, the expansion member 623 includes an expansion block 6231 and a limiting block 6232, and the expansion block 6231 and the limiting block 6232 are connected by an elastic member 6233. The relative movement between the expansion block 6231 and the limiting block 6232 is realized by the elastic force of the elastic member 6233. The limiting block 6232 is provided with a limiting step 62321 at one end away from the elastic member 6233. When the expansion member 623 extends into the wheel cover bracket 100, the limiting step 62321 and the edge of the open end side 110 of the wheel cover bracket 100 and the limiting step 62321 and the edge of the closed end side 110 of the wheel cover bracket 100 are simultaneously in contact and abutted.

[0050] In this embodiment, the wheel cover bracket 100's horizontal freedom is limited by the contact abutment between the limiting step 62321 and the edge of the open end side 110 of the wheel cover bracket 100, and between the limiting step 62321 and the edge of the closed end side 110 of the wheel cover, as well as the insertion fit between the positioning pin 522 on the positioning plate 521 and the positioning hole 120 on the wheel cover bracket 100. Since the wheel cover body 200 is clamped between the support platform and the clamping block 430, and the wheel cover bracket 100 and the wheel cover body 200 form an insertion fit, and the spreading block 6231 enables the two sides 110 of the open end and the two sides 110 of the closed end of the wheel cover bracket 100 to abut against the two cavity walls of the cavity 210 of the wheel cover body 200, the wheel cover bracket 100's vertical freedom is limited, thereby improving the reliability of the welding between the wheel cover bracket 100 and the wheel cover body 200.

[0051] More preferably, the limiting block 6232 is provided with a first limiting groove 62322 along its moving direction, and the expanding block 6231 is provided with a second limiting groove 62311 along a direction perpendicular to the moving direction of the limiting block 6232, and the first limiting groove 62322 and the second limiting groove 62311 are connected. The expanding member 623 also includes a limiting plunger 6234, and the limiting plunger 6234 is nested in the second limiting groove 62311 and abuts against the groove wall of the first limiting groove 62322.

[0052] In this embodiment, the horizontal travel of the limiting block 6232 is limited by the limiting plunger 6234, and the travel is within 10mm. This ensures that the limiting boss on the limiting block 6232 can abut against the edge of the side 110 of the wheel cover bracket 100, thereby limiting the degree of freedom of the wheel cover bracket 100 in the horizontal direction and improving the reliability of the welding between the wheel cover bracket 100 and the wheel cover body 200.

[0053] More preferably, the spreading block 6231 includes an inclined block 62312 and a horizontal block 62313 arranged vertically, and the limiting block 6232 includes a movable block 62323 that is inserted into the horizontal block 62313, and a contact block 62324 that abuts against the side 110 of the open end of the wheel cover bracket 100 or the side 110 of the closed end of the wheel cover. The limiting step 62321 is located at the junction of the movable block 62323 and the contact block 62324, the first limiting groove 62322 is located on the movable block 62323, and the elastic member 6233 is held between the horizontal block 62313 and the movable block 62323.

[0054] In this embodiment, by providing an elastic element 6233, the limiting step 62321 forms a "flexible contact" when it comes into contact with the edge of the open end side 110 of the wheel cover bracket 100 or the edge of the closed end side 110 of the wheel cover bracket 100, thus avoiding a hard collision between the limiting block 6232 and the edge of the wheel cover bracket 100. In addition, when the limiting step 62321 retracts after encountering the edge of the wheel cover bracket 100, the inclined surface of the inclined block 62312 can block the "reverse movement" of the limiting step 62321, thereby further controlling the movement stroke of the limiting block 6232, and thus improving the reliability and quality of the welding between the wheel cover bracket 100 and the wheel cover body 200.

[0055] Preferably, an auxiliary member 624 is arranged side by side on one side of the support member 623, and the end of the auxiliary member 624 connected to the second connecting plate 622 is arranged obliquely, while the end of the auxiliary member 624 that contacts the side 110 of the open end of the wheel cover bracket 100 or the side 110 of the closed end of the wheel cover bracket 100 is arranged horizontally.

[0056] In this embodiment, by setting the auxiliary component 624, it is further ensured that when the wheel cover bracket 100 is welded to the wheel cover body 200, the open end side 110 and the closed end side 110 of the wheel cover bracket 100 can be tightly fitted with the cavity wall of the corresponding cavity 210, thereby further improving the reliability and quality of the welding.

[0057] Preferably, the cylinder body of the limiting cylinder 610 is mounted on the limiting base 612 via the limiting support plate 611. The limiting base 612 is configured with an upward-opening C-shaped structure. The closed end of the limiting base 612 is mounted on the base plate 300. The two sides of the open end of the limiting base 612 are respectively connected to the first sliding structure 613, and a third connecting plate 614 connected to the spreading cylinder 620 is connected to the first sliding structure 613. The output end of the piston rod of the limiting cylinder 610 is connected to the third connecting plate 614 via the fourth connecting plate 615.

[0058] It is worth mentioning that the extension and retraction of the piston rod driven by the limiting cylinder 610, through the fourth connecting plate 615, causes the third connecting plate 614 to slide on the limiting base 612, thereby driving the horizontal movement of the opening cylinder 620.

[0059] In addition, the first sliding structure 613 adopts a slide rail slider structure.

[0060] More preferably, two limiting baffles 616 are provided on the moving trajectory of the piston rod of the limiting cylinder 610. One limiting baffle 616 is installed on the limiting base 612, and the other limiting baffle 616 is installed on the base plate 300. The maximum stroke that the piston rod can extend is controlled by the limiting baffle 616 installed on the limiting base 612, and the maximum stroke that the piston rod can retract is controlled by the limiting baffle 616 installed on the base plate 300.

[0061] It is worth mentioning that when the piston rod of the limiting cylinder 610 is at its maximum extension stroke, the limiting baffle 616 installed on the limiting base 612 comes into contact with the third connecting plate 614 to prevent the piston rod of the limiting cylinder 610 from extending further; when the piston rod of the limiting cylinder 610 is at its maximum retraction stroke, the limiting baffle 616 installed on the base plate 300 comes into contact with the cylinder body of the spreading cylinder 620 to prevent the piston rod of the limiting cylinder 610 from retracting further.

[0062] In this embodiment, by setting two limiting baffles 616, the extension and retraction stroke of the piston rod of the limiting cylinder 610 is controlled. On the one hand, it ensures that during the welding stage, the side 110 of the open or closed end of the wheel cover bracket 100 can abut against the cavity wall of the corresponding cavity 210, thereby improving the reliability of the welding between the wheel cover bracket 100 and the wheel cover body 200. On the other hand, it ensures that after the wheel cover bracket 100 and the wheel cover body 200 are welded, the supporting member 623 can be completely separated from the wheel cover bracket 100, thereby facilitating the unloading of the car wheel cover after welding.

[0063] Preferably, the movable cylinder 510 is mounted on the movable base 512 via a movable support plate 511, and the movable base 512 is arranged in an L-shape. One end of the movable base 512 is mounted on the base plate 300, and the other end of the movable base 512 is connected to a second sliding structure 513. A transition plate 515 connected to the positioning cylinder 520 is connected to the second sliding structure 513. The transition plate 515 is arranged in an L-shape, and one end of the transition plate 515 is connected to the cylinder body of the movable cylinder 510, and the other end of the transition plate 515 is connected to the piston rod of the movable cylinder 510.

[0064] It is worth mentioning that the extension and retraction of the piston rod driven by the moving cylinder 510, via the adapter plate 515, drives the horizontal movement of the positioning cylinder 520.

[0065] In addition, the second sliding structure 513 adopts a slide rail slider structure.

[0066] More preferably, two movable baffles 515 are provided on the moving trajectory of the piston rod of the movable cylinder 510, and the two movable baffles 515 are respectively installed at both ends of the movable base 512. The maximum stroke of the piston rod of the movable cylinder 510 can be controlled by the two movable baffles 515.

[0067] Preferably, two processing stations are provided on the substrate 300, and the two processing stations are arranged side by side. Since the car wheel cover is divided into a left part and a right part, and the left part and the right part are arranged symmetrically, the two processing stations on the substrate 300 can realize the processing of the left part and the right part simultaneously, thereby improving the processing efficiency of the car wheel cover.

[0068] It should be noted that in this invention, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0069] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0070] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A flexible welding fixture for automobile wheel covers, characterized in that, include: A base plate is provided, and multiple clamping mechanisms are mounted on the base plate. Each clamping mechanism includes a clamping cylinder, and a support block is connected to the cavity of the clamping cylinder. The output end of the clamping cylinder is rotatably connected to the clamping block. The support planes on the multiple support blocks are at the same horizontal height, forming a support platform for supporting and positioning the wheel cover body. The wheel cover body is fixed to the support platform by the multiple clamping blocks. A positioning and moving mechanism is mounted on a base plate and includes a moving cylinder and a positioning cylinder. The output end of the moving cylinder is connected to the positioning cylinder, and the output end of the positioning cylinder is provided with a positioning plate. A positioning pin is provided on the positioning plate to engage with the positioning hole on the wheel cover bracket. The positioning pin completes the pre-positioning of the wheel cover bracket on the positioning plate. Then, the moving cylinder drives the positioning plate to move in a direction close to the wheel cover body through the positioning cylinder, and inserts the wheel cover bracket into the cavity of the wheel cover body. The opening and limiting mechanism is installed on the base plate and is located on both sides of the support platform, along with the positioning and moving mechanism. The opening and limiting mechanism includes a limiting cylinder and an opening cylinder. The output end of the limiting cylinder is connected to the opening cylinder. The opening cylinder has two output ends, which are arranged vertically. Each output end is connected to an opening part. The limiting cylinder drives the opening cylinder to insert the opening part into the wheel cover bracket. Then, the opening cylinder drives the corresponding opening parts on the two output ends to move in opposite directions, so that the two sides of the open end of the wheel cover bracket and the side of the closed end of the wheel cover bracket are tightly fitted with the cavity wall corresponding to the cavity.

2. The flexible welding fixture for automobile wheel covers according to claim 1, characterized in that, The output end of the cylinder is provided with a first connecting plate and a second connecting plate connected to the first connecting plate. The opening part includes an opening member connected to the second connecting plate. There is a height difference between the first connecting plate and the opening member.

3. The flexible welding fixture for automobile wheel covers according to claim 1, characterized in that, The expansion component includes an expansion block and a limiting block, and the expansion block and the limiting block are connected by an elastic element. The elastic force of the elastic element enables relative movement between the expansion block and the limiting block. The limiting block has a limiting step at the end away from the elastic element. When the expansion component extends into the wheel cover bracket, the limiting step and the edge of the side of the open end of the wheel cover bracket, as well as the limiting step and the edge of the side of the closed end of the wheel cover bracket, simultaneously form a contact-type abutment fit.

4. The flexible welding fixture for automobile wheel covers according to claim 3, characterized in that, The limiting block is provided with a first limiting groove along its moving direction, and the expanding block is provided with a second limiting groove perpendicular to the moving direction of the limiting block. The first limiting groove and the second limiting groove are connected. The expanding member also includes a limiting plunger, which is nested in the second limiting groove and abuts against the groove wall of the first limiting groove.

5. The flexible welding fixture for automobile wheel covers according to claim 4, characterized in that, The expansion block includes an inclined block and a horizontal block arranged vertically, and the limiting block includes a movable block that is inserted into the horizontal block and a contact block that abuts against the side of the open end of the wheel cover bracket or the side of the closed end of the wheel cover. The limiting step is located at the junction of the movable block and the contact block, the first limiting groove is located on the movable block, and an elastic member is held between the horizontal block and the movable block.

6. A flexible welding fixture for automobile wheel covers according to claim 2, characterized in that, An auxiliary component is arranged side by side on one side of the support component, with one end of the auxiliary component connected to the second connecting plate being inclined, and the other end of the auxiliary component being horizontally arranged, which is in contact with the side of the open end of the wheel cover bracket or the side of the closed end of the wheel cover bracket.

7. The flexible welding fixture for automobile wheel covers according to claim 1, characterized in that, The cylinder body of the limiting cylinder is mounted on the limiting base via a limiting support plate. The closed end of the limiting base is mounted on the base plate. The two sides of the open end of the limiting base are respectively connected to a first sliding structure. A third connecting plate connected to the expanding cylinder is connected to the first sliding structure. The output end of the piston rod of the limiting cylinder is connected to the third connecting plate via a fourth connecting plate.

8. The flexible welding fixture for automobile wheel covers according to claim 7, characterized in that, Two limit baffles are provided on the movement trajectory of the piston rod of the limit cylinder. One limit baffle is installed on the limit base, and the other limit baffle is installed on the base plate. The maximum stroke that the piston rod can extend is controlled by the limit baffle installed on the limit base, and the maximum stroke that the piston rod can retract is controlled by the limit baffle installed on the base plate.

9. A flexible welding fixture for automobile wheel covers according to claim 1, characterized in that, The movable cylinder is mounted on the movable base via a movable support plate. One end of the movable base is mounted on the base plate, and the other end of the movable base is connected to a second sliding structure. A transition plate connected to the positioning cylinder is connected to the second sliding structure. The transition plate is L-shaped, with one end connected to the cylinder body of the movable cylinder and the other end connected to the piston rod of the movable cylinder.

10. A flexible welding fixture for automobile wheel covers according to claim 9, characterized in that, Two movable baffles are provided on the moving trajectory of the piston rod of the movable cylinder, and the two movable baffles are respectively installed at both ends of the movable base. The maximum stroke of the piston rod of the movable cylinder can be controlled by the two movable baffles.

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