Support positioning and clamping mechanism

Abstract

The utility model relates to the field of welding automation, in particular to a support positioning and clamping mechanism which comprises a base. The guide piece is arranged on the base; the first guide groove, the second guide groove and the third guide groove are vertically formed in the guide piece, and the second guide groove comprises a vertical first groove section and a second groove section diverging and extending outwards; the depth of the first groove section is greater than or equal to that of the third guide groove; the third guide groove is formed in the top end of the guide piece and communicates with the outside through an upper end opening. The extension directions of the first guide groove, the first groove section and the third guide groove are consistent; the core rod is telescopically arranged in the first guide groove, the end of the core rod is hinged to the sliding block through a first connecting block, and the first connecting block is arranged in the first guide groove in a sliding fit mode; the sliding block is in sliding fit with the second guide groove through a second connecting block. The support welding device is simple and compact in structure and capable of meeting the requirements of the support in the aspects of composite motion, precision keeping, space adaptation and the like in the welding process.

Description

Technical Field

[0001] This utility model relates to the field of welding automation, specifically to a bracket positioning and clamping mechanism. Background Technology

[0002] In the manufacturing process of automotive exhaust systems, brackets need to be welded onto the housing. During welding, fixtures are needed to position the components that dock with the brackets. The brackets also need to be positioned and clamped. Currently, the common method is to use a cylinder and a positioning block, which can only achieve the vertical lifting and lowering movement of the support arm. With this method, the positional accuracy of the positioning block is poor. Furthermore, after the bracket is welded, it cannot deviate in the feeding direction, which greatly restricts the main welded structure in the part removal direction, making it impossible to make way for the robotic arm and the main workpiece. If an obstacle avoidance structure needs to be added, secondary positioning or an additional rotary drive unit must be added, which not only increases the complexity of the equipment but also leads to a large cumulative positioning error. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a bracket positioning and clamping mechanism. This mechanism has a simple and compact structure and can meet the requirements of brackets in terms of complex motion, precision maintenance, and spatial adaptability during the welding process.

[0004] The purpose of this utility model is achieved as follows: a bracket positioning and clamping mechanism, comprising:

[0005] Base;

[0006] Guide components mounted on the base;

[0007] The guide member has a vertical first guide groove, a second guide groove, and a third guide groove, wherein:

[0008] The second guide channel includes a vertical first channel segment and a second channel segment extending outwards;

[0009] The depth of the first groove is greater than or equal to the depth of the third guide groove;

[0010] The third guide groove is located at the top of the guide component and is connected to the outside through the upper opening;

[0011] The first guide groove, the first groove segment, and the third guide groove extend in the same direction;

[0012] A core rod is telescopically disposed in the first guide groove, and its end is hinged to the slider through a first connecting block. The first connecting block is slidably engaged in the first guide groove.

[0013] The slider is slidably engaged with the second guide groove via the second connecting block and with the third guide groove via the third connecting block;

[0014] The support arm is connected to the far end of the slider, and a bracket positioning clamp is provided at its end.

[0015] The guide is plate-shaped, and each guide groove runs horizontally through the guide; the slider includes an upper base, on both sides of which a first slide plate and a second slide plate are provided, with a gap between the two slide plates to cooperate with the guide.

[0016] It also includes a sliding sleeve, which is connected to the core rod by bolts in its axial inner hole; the first connecting block is transversely inserted on the sliding sleeve, and the sliding sleeve is hinged to the slider through the two axial ends of the first connecting block.

[0017] The bracket positioning clamp includes a positioning block with a positioning groove at its distal end;

[0018] The bottom of the positioning groove is equipped with a positioning pin, and the two sides of the groove are equipped with swingable grippers.

[0019] The claw head extends into the positioning groove, and the claw arm is hinged to the outer wall of the positioning block.

[0020] The claw tail and the positioning block support are provided with elastic elements, so that the claw tail tends to move away from the positioning block.

[0021] The two outer side walls of the gripper are connected to clamping plates; the support arm has a slot for the clamping plates to pass through.

[0022] The upper end of the base is detachably connected to a wear block, and its top end is provided with a slot for engaging the arm body.

[0023] The slider is provided with a limiting block, the far end of which has a bent portion; the outer surfaces on both sides of the bent portion are respectively provided with a first limiting surface and a first guide surface; the base is provided with a limiting claw, the back side of the claw tip of the limiting claw is provided with a second limiting surface, which cooperates with the first limiting surface.

[0024] The connecting block is cylindrical.

[0025] A telescopic cylinder is installed on the base, and the movable end of the telescopic cylinder is connected to the core rod.

[0026] The above scheme has the following beneficial effects: the base provides the main support for the entire clamping mechanism, and the guide component guides and limits the slider. The first guide groove guides the movement of the core rod and constrains the first connecting block during the swing. The slider can swing relative to the guide component through the hinge structure. During the upward movement of the slider, the three guide grooves extend in the same direction and can move upward. When the movement continues, the third connecting block in the third guide groove disengages through the opening, releasing the restriction on the slider's movement. At the same time, the second connecting block in the second guide groove enters the second groove section, driving the slider to swing. The slider swings, which in turn drives the entire support arm to swing, thus achieving the effect of swinging and offsetting above the welding body, thereby achieving the effect of obstacle avoidance. During the positioning process, the support is clamped by the positioning chuck. After clamping, the second groove section guides the swing back, so that the positioning chuck is directly above the main body. Then the third connecting block enters the third guide groove, thereby restricting the rotation of the slider. The slider then continues to descend until the support and the main body are close together, reaching the welding position. By employing this utility model, the three-guide groove collaborative guiding system can meet the requirements of composite motion, precision maintenance, and spatial adaptation of the bracket during the welding process under the action of a single driving source.

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0030] Figure 3 This is a top view of the present invention;

[0031] Figure 4 for Figure 3 BB section view;

[0032] Figure 5 This is a perspective view of the present utility model;

[0033] Figure 6 This is a perspective view of the present invention after the first sliding plate has been removed;

[0034] Figure 7 This is a schematic diagram of the utility model in use.

[0035] In the attached diagram, 100 is the base, 110 is the guide member, 111 is the first guide groove, 112 is the second guide groove, 1121 is the first groove segment, 1122 is the second groove segment, 113 is the third guide groove, 1131 is the upper opening, 200 is the core rod, 210 is the first connecting block, 211 is the sliding sleeve, 212 is the bolt, 213 is the first hinge shaft, 300 is the slider, 310 is the upper base, 311 is the first sliding plate, 312 is the second sliding plate, 313 is the gap, and 320 is the second connecting block. 330 is the third connecting block, 400 is the support arm, 410 is the slot, 500 is the bracket positioning chuck, 510 is the positioning block, 511 is the positioning groove, 5111 is the positioning pin, 520 is the gripper, 521 is the gripper head, 522 is the gripper arm, 523 is the gripper tail, 554 is the second limiting surface, 530 is the elastic element, 540 is the clamping piece, 600 is the wear block, 610 is the slot, 340 is the limiting block, 341 is the bending part, 3411 is the first limiting surface, and 3412 is the first guide surface. Detailed Implementation

[0036] Referring to the accompanying drawings, the specific embodiments of this utility model will be described in detail.

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0038] In the description of this application, it should be understood that the terms center, upper, lower, front, back, left, right, vertical, horizontal, top, bottom, inner, and outer, indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In the description of this application, the terms first and second are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined as first and second can be used to explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, multiple means two or more. It should be noted that in practical applications, due to limitations in equipment accuracy or installation errors, absolute parallelism or perpendicularity is difficult to achieve. The descriptions of vertical, parallel, or unidirectional in this application are not absolute limitations, but rather indicate that vertical or parallel structural settings can be achieved within a preset error range, and the corresponding preset effects can be achieved. In this way, the technical effects of the defined features can be maximized, and the corresponding technical solutions can be easily implemented, thus having high feasibility.

[0039] In the description of this specification, the references to the terms "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0040] See Figures 1-7An embodiment of a bracket positioning and clamping mechanism includes a base 100 and a guide member 110 disposed on the base 100; it also includes a vertical first guide groove 111, a second guide groove 112, and a third guide groove 113 disposed on the guide member 110, wherein: the second guide groove 112 includes a vertical first groove segment 1121 and a second groove segment 1122 extending outward; the depth of the first groove segment 1121 is greater than or equal to the depth of the third guide groove 113, and when the second connecting block 320 enters the second groove segment 1122, the third guide groove 113... The third guide groove 113 releases the restriction of the second connecting block 320, and the third guide groove 113 is set at the top of the guide member 110 and communicates with the outside through the upper opening 1131; the extension directions of the first guide groove 111, the first groove segment 1121 and the third guide groove 113 are consistent; it also includes a core rod 200 that is telescopically set in the first guide groove 111, and a telescopic cylinder can be set on the base. The movable end of the telescopic cylinder is connected to the core rod. The telescopic cylinder can be a pneumatic cylinder, an electric cylinder or a hydraulic cylinder, etc. The core rod can be integrally formed with the movable end, and the core rod can be a component of the telescopic cylinder. The end of the core rod is hinged to the slider 300 through the first connecting block 210, and the first connecting block 210 is slidably fitted in the first guide groove 111, wherein the connecting block can be cylindrical;

[0041] The slider 300 is slidably engaged with the second guide groove 112 via the second connecting block 320 and with the third guide groove 113 via the third connecting block 330, wherein the connecting block may be cylindrical; it also includes a support arm 400 connected to the far end of the slider 300, and a bracket positioning clamp 500 is provided at its end.

[0042] In some embodiments, the guide member 110 is plate-shaped, and each guide groove extends laterally through the guide member 110; the slider 300 includes an upper base 310, on both sides of which a first sliding plate 311 and a second sliding plate 312 are provided, and a gap 313 is left between the two sliding plates to cooperate with the guide member 110. With this structure, the guide member 110 is located between the two sliding plates of the slider 300, with a larger contact surface, which can provide high-strength support. Of course, this structure can also shield the guide grooves and connecting blocks, enabling them to adapt to harsh working environments and maintain high fitting accuracy.

[0043] In some embodiments, a sliding sleeve 211 is further included, which is connected to the core rod 200 via a bolt 212 inside its axial inner hole; the first connecting block 210 is transversely inserted through the sliding sleeve 211, and the sliding sleeve 211 is hinged to the slider 300 through the two axial ends of the first connecting block 210. With this structure, the sliding sleeve 211 can achieve a sliding fit with the first guide groove 111, while also providing mounting for the core rod 200 and the first connecting block 210. The bolt 212 connects the core rod 200, facilitating assembly and replacement after wear.

[0044] In some embodiments, the bracket positioning chuck 500 includes a positioning block 510 with a positioning groove 511 at its distal end; a positioning pin 5111 is set at the bottom of the positioning groove 511, and swingable grippers 520 are provided at the openings on both sides of the groove; the gripper head 521 of the gripper 520 extends into the positioning groove 511, and the gripper arm 522 is hinged to the outer wall of the positioning block 510; the gripper tail 523 and the support of the positioning block 510 are provided with an elastic element 530, so that the gripper tail 523 tends to move away from the positioning block 510. With the above structure, the Z-shaped bracket can be positioned by the positioning groove 511, and the positioning pin 5111 can form a positioning with the hole on the bracket. The gripper 520 can clamp the bracket in the positioning groove 511. The gripper arm 522 of the gripper 520 can swing, open and close, which facilitates picking up or putting down the workpiece. The elastic element 530 makes the gripper 520 always have a closing tendency, which can always clamp the workpiece. Furthermore, clamping plates 540 are connected to the two outer side walls of the gripper 520; the support arm 400 is provided with a slot 410 for the clamping plates 540 to pass through. Since the gripper 520 needs its claw head 521 to be close to the positioning groove 511, the claw head 521 of the gripper 520 needs to be close to the positioning groove 511. Therefore, the claw tail 523 should not be set too long to avoid interference with the positioning block 510. By setting the clamping plates 540, it is easier to move the gripper 520 with less effort. At the same time, the shorter claw tail 523 allows the gripper 520 to have a larger swing angle, which facilitates the removal and placement of the bracket.

[0045] In some implementations, the upper end of the base 100 is detachably connected to the wear block 600, and its top end is provided with a slot 610 for engaging the arm body of the support arm 400. When the entire slider 300 moves to the positioning groove 511, the entire slider 300 can be limited at the lower limit position, which can accurately limit the slider 300. As production progresses during mass production, the positioning groove 511 wears down and its positioning accuracy decreases. Through the detachable structure, the wear block 600 can be replaced, which can ensure production accuracy.

[0046] In some embodiments, the slider 300 is provided with a limiting block 340, the distal end of which has a bent portion 341; the outer surfaces on both sides of the bent portion 341 are provided with a first limiting surface 3411 and a first guide surface 3412; the base is provided with a limiting claw 550, the back side of the claw tip of the limiting claw 550 is provided with a second limiting surface 554, which cooperates with the first limiting surface 3411. With this structure, when the slider 300 reaches its upper limit, the first limiting surface 3411 contacts the second limiting surface 554, applying resistance to prevent the slider 300 from sliding down. This maintains the stability of the slider 300's position and avoids insufficient support force caused by cylinder failure or reduced thrust. During the upward movement of the slider 300, the first guide surface 3412 contacts the tip of the limiting claw 550, causing the limiting claw 550 to swing back. After the limiting block 340 passes the limiting claw 550, the claw head 521 of the limiting claw 550 swings back under the action of the elastic element 530. When it is necessary to release the limit, the limiting claw 550 can be forcibly retracted, compressing the elastic element 530. A handle is usually provided on the limiting claw 550 for easy operation. The elastic element 530 can be a helical spring, a butterfly spring, or a rubber block, etc.

[0047] Using the above scheme, when clamping the bracket, the slider 300 is at the upper limit position, and the bracket is clamped in the positioning block 510. The first limiting surface 3411 of the limiting block 340 cooperates with the second limiting surface 554 of the gripper 520 to keep the slider 300 stable at the upper limit position. When the handle is turned, the slider 300 continues to descend. When the support arm 400 cooperates with the positioning groove 511 on the wear block 600, it slides to the lower limit position, and the bracket is welded to the main body. After the welding is completed, the slider 300 moves upward. After the third connecting block 330 disengages from the third guide groove 113, the second connecting block 320 slides in the second groove section 1122 and drives the slider 300 to swing. The entire support arm 400 swings. When the limiting block 340 contacts the claw tip of the limiting claw 550, the limiting claw 550 retracts, and the slider 300 moves upward to the upper limit position. The limiting claw 550 limits the limiting block 340. This invention, through the coordinated operation of three guide grooves, can meet the requirements of composite motion, precision maintenance, and spatial adaptation of the bracket during the welding process under the action of a single drive source.

[0048] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A bracket positioning and clamping mechanism, characterized in that, include: Base (100); A guide (110) is provided on the base (100); Vertical first guide groove (111), second guide groove (112), and third guide groove (113) are provided on the guide member (110), wherein: The second guide groove (112) includes a vertical first groove section (1121) and a second groove section (1122) extending outwards; The depth of the first groove segment (1122) is greater than or equal to the depth of the third guide groove (113); The third guide groove (113) is located at the top of the guide member (110) and communicates with the outside through the upper opening (1131); The first guide groove (111), the first groove segment (1121), and the third guide groove (113) extend in the same direction; The core rod (200) is telescopically disposed in the first guide groove (111), and its end is hinged to the slider (300) through the first connecting block (210). The first connecting block (210) is slidably fitted in the first guide groove (111). The slider (300) is slidably engaged with the second guide groove (112) via the second connecting block (320) and with the third guide groove (113) via the third connecting block (330); The support arm (400) is connected to the far end of the slider (300), and a bracket positioning chuck (500) is provided at its end.

2. The bracket positioning and clamping mechanism according to claim 1, characterized in that, The guide member (110) is plate-shaped, and each guide groove passes through the guide member laterally; the slider (300) includes an upper base (310), and a first sliding plate (311) and a second sliding plate (312) are provided on both sides of the base, with a gap (313) between the two sliding plates to cooperate with the guide member (110).

3. The bracket positioning and clamping mechanism according to claim 1 or 2, characterized in that, It also includes a sliding sleeve (211), which is connected to the core rod (200) by a bolt (212) in its axial inner hole; the first connecting block (210) is transversely inserted on the sliding sleeve (211), and the sliding sleeve (211) is hinged to the slider (300) through the two axial ends of the first connecting block (210).

4. The bracket positioning and clamping mechanism according to claim 1, characterized in that, The bracket positioning clamp (500) includes a positioning block (510) with a positioning groove (511) at its distal end; The positioning groove (511) has a positioning pin (5111) at the bottom and swingable grippers (520) at both sides of the groove opening; The claw (521) of the gripper (520) extends into the positioning groove (511), and the claw arm (522) is hinged to the outer wall of the positioning block (510); The claw tail (523) and the positioning block (510) support are provided with elastic elements (530), so that the claw tail (523) tends to move away from the positioning block (510).

5. The bracket positioning and clamping mechanism according to claim 4, characterized in that, The two outer side walls of the gripper (520) are connected to the clamping pieces (540); the support arm (400) is provided with a slot (410) for the clamping pieces (540) to pass through.

6. The bracket positioning and clamping mechanism according to claim 1, characterized in that, The upper end of the base (100) is detachably connected to the wear block (600), and its top end is provided with a slot (610) for engaging the arm body of the support arm (400).

7. The bracket positioning and clamping mechanism according to claim 1, characterized in that, The slider (300) is provided with a limiting block (340), and its far end has a bent part (341); the outer surfaces on both sides of the bent part (341) are respectively provided with a first limiting surface (3411) and a first guide surface (3412); the base is provided with a limiting claw, and the back side of the claw tip of the limiting claw is provided with a second limiting surface (554), which cooperates with the first limiting surface (3411).

8. The bracket positioning and clamping mechanism according to claim 1, characterized in that, The connecting block is cylindrical.

9. The bracket positioning and clamping mechanism according to claim 1, characterized in that, A telescopic cylinder is installed on the base, and the movable end of the telescopic cylinder is connected to the core rod.

Images