Clamping mechanism for welding chair tube nut piece

Abstract

The utility model belongs to the technical field of welding equipment, and provides a chair tube nut piece welding and clamping mechanism which comprises an installation base, a nut piece clamping mechanism, a nut piece clamping mechanism and a nut piece clamping mechanism, and the installation base is connected with a rack in a sliding mode and provided with a first position and a second position; the grabbing elements are in a U shape and are in sliding connection with the mounting base, the number of the grabbing elements is two, and the two grabbing elements are symmetrically arranged; the first driving device is arranged on the mounting seat, is in transmission connection with the grabbing elements, and is used for driving the two grabbing elements to get close to each other or get away from each other; and the second driving device is fixedly connected with the rack, is in transmission connection with the mounting seat, and is used for driving the mounting seat to do reciprocating rectilinear motion between the first position and the second position. The welding and clamping mechanism for the nut piece of the chair tube is simple in structure, reasonable in design, capable of rapidly placing the nut piece into a preset position in the chair tube, and high in welding precision and efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to a chair tube nut sheet welding clamping mechanism. Background Art

[0002] The study chair is designed according to ergonomic principles and can provide users with good support and stability, avoiding changes in posture due to body instability, which may lead to distraction and thus improve the user's attention and concentration. At the same time, good support can reduce the pressure on the waist and back, and reduce the risk of lumbar or cervical spondylosis. It is usually used in conjunction with a study table.

[0003] Chair tubes are the supporting components of study chairs, supporting the desk cushion and backrest. During the tube manufacturing process, a nut plate needs to be placed a certain distance inside one end of the tube and then welded. Currently, workers use tools to insert the nut plate into the tube and weld it, which is extremely inconvenient and seriously affects welding efficiency and accuracy. Utility Model Content

[0004] In view of the defects in the prior art, the purpose of the present invention is to provide a chair tube nut plate welding clamping mechanism to solve or alleviate the above-mentioned technical problems in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a chair tube nut sheet welding clamping mechanism, comprising:

[0006] A mounting base, which is slidably connected to the frame and has a first position and a second position;

[0007] A gripping element, which is U-shaped and slidably connected to the mounting seat, is provided with two gripping elements, and the two gripping elements are symmetrically arranged;

[0008] A first driving device, which is disposed on the mounting seat and is in transmission connection with the grasping elements, and is used to drive the two grasping elements to move closer to or away from each other; and

[0009] The second driving device is fixedly connected to the frame and is in driving connection with the mounting seat, and is used for driving the mounting seat to perform reciprocating linear motion between the first position and the second position.

[0010] Furthermore, a first clamping groove is provided on the side wall on the opposite side of the two grasping elements, and the first clamping groove is used to clamp the nut piece and position the nut piece.

[0011] Furthermore, first limiting walls are provided on both sides of the nut piece, and second limiting walls matching the first limiting walls are provided on both of the two grabbing elements.

[0012] Further, both the first limiting wall and the second limiting wall are inclined.

[0013] Further, the second driving device includes a second electric push rod, the second electric push rod is fixedly connected to the frame, and the power output shaft of the second electric push rod is connected to the mounting seat.

[0014] Further, the first driving device includes two first electric push rods, both of the two first electric push rods are arranged on the mounting seat, and the power output shafts of the two first electric push rods are respectively connected to the two grasping elements.

[0015] Advantages of the present utility model:

[0016] The chair tube nut sheet welding and clamping mechanism provided by the present utility model can quickly place the nut sheet at the target position inside the chair tube, improving the welding accuracy and efficiency. Description of the drawings

[0017] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 It is a three-dimensional view of the chair tube nut sheet welding and clamping mechanism provided by an embodiment of the present utility model;

[0019] Figure 2 For Figure 1 The enlarged view of part A shown;

[0020] Figure 3 For Figure 1 The combined three-dimensional view of the chair tube nut sheet welding and clamping mechanism and the chair tube positioning mechanism shown.

[0021] Reference numerals:

[0022] 110, mounting seat; 120, grasping element; 121, first card slot; 122, second limiting wall; 130, first electric push rod; 140, second electric push rod; 150, sliding seat; 210, nut sheet; 211, first limiting wall; 310, positioning seat; 410, chair tube. Specific embodiments

[0023] The embodiments of the technical solution of the present utility model will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present utility model, and therefore are only examples and cannot be used to limit the protection scope of the present utility model.

[0024] It should be noted that unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meanings understood by those skilled in the art to which the present utility model belongs.

[0025] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model.

[0026] In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0027] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] In this application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is at a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is at a lower horizontal height than the second feature.

[0029] Such as Figures 1-3As shown, the present invention provides a chair tube nut plate welding clamping mechanism, which is used in conjunction with a chair tube positioning mechanism. The chair tube nut plate welding clamping mechanism includes a mounting base 110, a gripping element 120, a second drive device, and a first drive device.

[0030] The mounting base 110 is slidably connected to the frame. In this embodiment, the mounting base 110 is slidably connected to the positioning base 310 of the seat tube positioning mechanism. The mounting base 110 has a first position and a second position, and can reciprocate linearly between the first position and the second position.

[0031] The grabbing element 120 is U-shaped, and the grabbing element 120 is slidably connected to the mounting seat 110. Specifically, two sliding seats 150 are slidably connected to the mounting seat 110, and the two grabbing elements are fixedly mounted on the two sliding seats 150, respectively. The grabbing element 120 can move along with the mounting seat 110, and there are two grabbing elements 120, and the two grabbing elements 120 are symmetrically arranged. The first driving device is arranged on the mounting seat 110, and the first driving device is transmission-connected to the grabbing element 120. The first driving device is used to drive the two grabbing elements 120 to move closer to or away from each other. In the working state, the first driving device drives the two grabbing elements 120 to move closer to each other to clamp the nut plate 210, and the first driving device drives the two grabbing elements 120 to move away from each other to loosen the nut plate 210.

[0032] Specifically, if Figures 1-3 As shown, in this embodiment, the first drive device includes two first electric push rods 130, each of which is disposed on a mounting base 110, and the power output shafts of the two first electric push rods 130 are respectively fixedly connected to the two gripping elements 120. Specifically, the two first electric push rods 130 are respectively fixedly connected to the two gripping elements via two sliding bases 150.

[0033] During use, the two first electric push rods 130 extend, thereby simultaneously pushing the two gripping elements 120 to move, thereby bringing the two gripping elements 120 closer to each other to clamp the nut plate 210. The two first electric push rods 130 shorten, thereby simultaneously moving the two gripping elements 120 away from each other to release the nut plate 210.

[0034] The second driving device is fixedly connected to the frame. In this embodiment, the second driving device is fixedly connected to the positioning seat 310 of the seat tube positioning mechanism. The second driving device is in transmission connection with the mounting seat 110, and the second driving device is used to drive the mounting seat 110 to make a reciprocating linear motion between a first position and a second position. In the working state, the second driving device drives the mounting seat 110 from the first position to the second position, so that the two grasping elements 120 clamping the nut piece 210 can move the nut piece 210 into the seat tube 410, and the second driving device drives the mounting seat 110 from the second position to the first position, so that the grasping elements 120 can move out of the seat tube 410.

[0035] Specifically, as Figures 1-3 shown, in this embodiment, the second driving device includes a second electric push rod 140. The second electric push rod 140 is fixedly connected to the frame, and the power output shaft of the second electric push rod 140 is fixedly connected to the mounting seat 110. When in use, the second electric push rod 140 extends, so that the mounting seat 110 moves from the second position to the first position, and the second electric push rod 140 contracts, so that the mounting seat 110 moves from the first position to the second position.

[0036] Specifically, when in use, first, the seat tube 410 is fixed on the seat tube positioning mechanism; then, the first driving device drives the two grasping elements 120 to approach each other to clamp a nut piece 210 between the two grasping elements 120; then, the second driving device drives the mounting seat 110 to move from the first position to the second position, and the mounting seat 110 drives the grasping elements 120 to move together, so that the two grasping elements 120 clamping the nut piece 210 move the nut piece 210 into the seat tube 410.

[0037] After the welding is completed, the first driving device drives the two grasping elements 120 to move away from each other to release the nut piece 210, and then, the second driving device drives the positioning seat 310 from the second position to the first position, and the mounting seat 110 drives the grasping elements 120 to move together, so that the grasping elements 120 move out of the seat tube 410 and return to the original position.

[0038] As Figure 2 shown, preferably, first clamping grooves 121 are provided on the side walls of the opposite sides of the two grasping elements 120. The first clamping grooves 121 are used to clamp the nut piece 210 and position the nut piece 210. In the working state, both sides of the nut piece 210 are clamped in the first clamping grooves 121, so as to improve the clamping stability. At the same time, the position of the nut piece 210 on the grasping element 120 can be quickly positioned through the first clamping grooves 121, so as to facilitate accurately placing the nut piece 210 at the target position in the seat tube 410, and the welding efficiency is improved.

[0039] AsFigure 2 As shown, first limiting walls 211 are provided on both sides of the nut piece 210, and second limiting walls 122 that cooperate with the first limiting walls 211 are provided on both of the two grasping elements 120. During use, through the cooperation of the first limiting walls 211 and the second limiting walls 122, it can prevent the nut piece 210 from falling down under the action of gravity, thereby improving the stability of clamping. At the same time, it can also accurately position the nut piece 210. Preferably, both the first limiting walls 211 and the second limiting walls 122 are inclined to facilitate the grasping element 120 to release the nut piece 210.

[0040] In the description of the present invention, a large number of specific details are illustrated. However, it can be understood that the embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures, and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0041] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and the specification of the present invention.

Claims

1. A welding clamping mechanism for a chair tube nut piece, characterized in that, Comprising: A mounting base (110) which is slidably connected to the frame and has a first position and a second position; Gripping elements (120) which are U-shaped, slidably connected to the mounting base (110) and movable together with the mounting base (110), and there are two of them, and the two gripping elements (120) are symmetrically arranged; A first driving device which is arranged on the mounting base (110), is in transmission connection with the gripping elements (120), and is used to drive the two gripping elements (120) to approach or move away from each other; and A second driving device which is fixedly connected to the frame, is in transmission connection with the mounting base (110), and is used to drive the mounting base (110) to make a reciprocating linear motion between the first position and the second position.

2. The welding clamping mechanism for the chair tube nut piece according to claim 1, characterized in that, On the side walls of the opposite sides of the two gripping elements (120), there are first clamping grooves (121) which are used to clamp the nut piece (210) and position the nut piece (210).

3. The chair tube nut sheet welding clamping mechanism according to claim 2, wherein, On both sides of the nut piece (210), there are first limiting walls (211), and on both of the two gripping elements (120), there are second limiting walls (122) which cooperate with the first limiting walls (211).

4. The chair tube nut sheet welding clamping mechanism according to claim 3, wherein, Both the first limiting wall (211) and the second limiting wall (122) are inclinedly arranged.

5. The chair tube nut sheet welding clamping mechanism according to any one of claims 1-4, characterized in that, The second driving device includes a second electric push rod (140) which is fixedly connected to the frame, and the power output shaft of the second electric push rod (140) is connected to the mounting base (110).

6. The welding clamping mechanism for the chair tube nut piece according to claim 5, wherein, The first driving device includes two first electric push rods (130). The two first electric push rods (130) are both arranged on the mounting base (110), and the power output shafts of the two first electric push rods (130) are respectively connected to the two gripping elements (120).

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