Nut welding jig based on six-axis robot

Abstract

The utility model discloses a nut welding jig based on a six-axis robot. The nut welding jig comprises a jig seat, a profiling positioning block, a pressing buckle assembly, a rotating air cylinder, a lifting air cylinder, a lower pressing block, an ejection air cylinder and an ejection block. The profiling positioning block is used for being connected with a workpiece of a nut to be welded in a positioning mode, the positioning pin is used for positioning and placing the nut, the movable end of the rotating air cylinder is connected with the lifting air cylinder, and the lower pressing block is used for pressing the nut on the workpiece along with lifting motion of the lifting air cylinder. When a nut needs to be welded to a workpiece, the rotating air cylinder can drive the lower pressing block to rotate to the position above the nut, the nut is pressed on the workpiece through the matching effect of the lifting air cylinder and the lower pressing block, at the moment, the nut can be spot-welded to the workpiece through an external six-axis robot, and after spot welding is completed, the nut is welded to the workpiece. The rotating air cylinder can drive the lower pressing block to rotate so that the six-axis robot can conduct full-length welding on the nut, welding interference is avoided, and therefore the welding quality between the nut and the workpiece is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of nut welding jigs, in particular to a nut welding jig based on a six-axis robot. Background Art

[0002] In the industrial manufacturing process, in order to improve the assembly efficiency and structural stability of parts, it is often necessary to weld nuts on the workpiece to improve the processing efficiency of the production line.

[0003] In the existing technology, there are mainly two nut welding methods on the market: manual welding and platform welding. Manual welding is widely used in products with low precision requirements because of its flexible operation and strong adaptability. However, since the operator needs to be close to the welding point during the welding process and is exposed to high temperature, strong light and harmful gas environment for a long time, it is very easy to pose a threat to the health of the operator. In addition, manual welding is less efficient and cannot meet the needs of large-scale production. In contrast, platform welding uses a jig to fix the workpiece, which can improve the efficiency and accuracy of welding and is suitable for mass production. However, when the welding robot is performing nut welding on the workpiece on the jig, welding interference problems are likely to occur, resulting in the welding head being unable to smoothly contact the welding area, thereby affecting the normal progress of the welding operation.

[0004] The existing technology has defects and needs to be improved. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a nut welding fixture based on a six-axis robot, which can stabilize workpiece positioning, improve welding efficiency, and avoid welding interference.

[0006] To achieve this purpose, the utility model adopts the following technical solutions: a nut welding jig based on a six-axis robot, comprising a jig seat, a contour positioning block, a buckle assembly, a rotating cylinder, a lifting cylinder, a pressing block, an ejection cylinder and an ejection block;

[0007] A plurality of contoured positioning blocks are provided on the top of the jig seat, and the contoured positioning blocks are used to position and connect with the workpiece to which the nut is to be welded. A plurality of positioning pins are provided on the top of the jig seat, and the positioning pins partially pass through the workpiece, and the positioning pins are used to position and place the nut. Two groups of buckle assemblies are respectively provided on both sides of the jig seat, and the buckle assemblies are used to press the workpiece onto the jig seat;

[0008] The rotating cylinder is arranged on the side wall of the middle part of the fixture seat, and the movable end of the rotating cylinder is connected to the lifting cylinder. The movable end of the lifting cylinder is arranged upward and is connected to the lower pressing block through a connecting arm. The lower pressing block is used to press the nut on the workpiece as the lifting cylinder moves up and down.

[0009] The ejecting cylinder is arranged at the bottom of the jig seat, the movable end of the ejecting cylinder is arranged upward and connected with the ejecting block, and the ejecting block is used for ejecting the workpiece from the profiled positioning block along with the lifting movement of the ejecting cylinder.

[0010] With the technical scheme, the nut welding jig based on the six-axis robot is provided with the upwardly arranged ejecting rod on the ejecting block.

[0011] The jig seat is provided with an ejecting hole for the ejecting rod to pass through.

[0012] With the technical scheme, the nut welding jig based on the six-axis robot is provided with three positioning pins, and the lower pressing block is in a trident structure.

[0013] With the technical scheme, the nut welding jig based on the six-axis robot is provided with the lower pressing block made of rubber.

[0014] With the technical scheme, the nut welding jig based on the six-axis robot is provided with the profiled positioning block in a cylindrical structure.

[0015] With the technical scheme, the nut welding jig based on the six-axis robot is provided with the pressing buckle assembly as a quick clamp.

[0016] With the technical scheme, the nut welding jig based on the six-axis robot is provided with the jig seat including a bottom plate, a support plate and a top plate.

[0017] The top plate is arranged above the bottom plate, and the top plate and the bottom plate are connected through the support plate.

[0018] With the technical scheme, the nut welding jig based on the six-axis robot is provided with the ejecting cylinder arranged on the bottom plate.

[0019] Compared with the prior art, the nut welding jig based on the six-axis robot has the following beneficial effects:

[0020] The profiling positioning block can be connected with the positioning hole on the workpiece, so that the workpiece is fixed on the jig seat, the position deviation of the workpiece in the welding process is prevented, and the welding precision is improved; the positioning pin can preliminarily position the nut in the area to be welded of the workpiece, so as to prevent the nut from deviating when spot welding; when the nut needs to be welded on the workpiece, the rotary cylinder can drive the lower pressing block to rotate to the position above the nut, then the lifting cylinder acts and drives the lower pressing block to press the nut tightly on the workpiece, at this time, the external six-axis robot can spot weld the nut on the workpiece, after spot welding is completed, the lifting cylinder drives the lower pressing block to rise, then the rotary cylinder drives the lower pressing block to rotate by 90 degrees, so that the six-axis robot performs full welding on the nut, the existence of the lower pressing block is avoided to affect the welding operation of the six-axis robot, welding interference is prevented, and thus the welding quality between the nut and the workpiece is effectively improved; after welding is completed, the user can loosen the pressing buckle assembly, and the workpiece is ejected from the jig seat through the ejector block, so that the workpiece is quickly taken out. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0022] The structure, proportion, size and the like shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification, so that those skilled in the art can understand and read, and are not used to limit the implementation conditions of the present application, so they do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effect and purpose of the present application, should still fall within the scope of the technical content disclosed by the present application.

[0023] Figure 1 It is a spot welding state structure schematic view of the present application;

[0024] Figure 2 It is an explosion structure schematic view of the present application;

[0025] Figure 3 It is an overall structure schematic view of the present application. DETAILED DESCRIPTION

[0026] In order to make the utility model of the utility model purpose, characteristics, advantages can be more obvious and easy to understand, the following will be combined with the utility model embodiment in the drawings, the technical scheme in the utility model embodiment is described clearly and completely, obviously, the following described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor are within the scope of the utility model protection.

[0027] In the description of the utility model, it needs to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there can be a component disposed therebetween.

[0028] The technical scheme of the utility model will be further illustrated below by combining the drawings and specific embodiments.

[0029] As shown in Figures 1 to 3 The utility model embodiment provides a nut welding jig based on six-axis robot, including jig base 1, profiling positioning block 2, press buckle assembly 3, rotary cylinder 4, lifting cylinder 5, lower block 6, ejector cylinder 7 and ejector block 8;

[0030] A plurality of profiling positioning blocks 2 are arranged on the top of the jig base 1, the profiling positioning block 2 is used for positioning and connecting with the workpiece to be welded nut, a plurality of positioning pins 10 are arranged on the top of the jig base 1, the positioning pin 10 is partially inserted into the workpiece, the positioning pin 10 is used for positioning the nut, two groups of press buckle assemblies 3 are arranged on the two sides of the jig base 1 respectively, and the press buckle assembly 3 is used for pressing the workpiece on the jig base 1. When the workpiece is placed on the jig base 1, the profiling positioning block 2 can be connected with the positioning hole on the workpiece, so as to fix the workpiece on the jig base 1, prevent the workpiece from being deviated during the welding process, and effectively improve the welding precision. The positioning pin 10 can preliminarily position the nut in the area to be welded on the workpiece, so as to prevent the nut from being deviated during spot welding. The press buckle assembly 3 can improve the clamping stability between the workpiece and the jig base 1.

[0031] The rotating cylinder 4 is arranged on the middle side wall of the jig seat 1, the movable end of the rotating cylinder 4 is connected with the lifting cylinder 5, the movable end of the lifting cylinder 5 is arranged upward, and the lifting cylinder 5 is connected with the pressing block 6 through the connecting arm 61, and the pressing block 6 is used for pressing the nut on the workpiece along with the lifting movement of the lifting cylinder 5; when the nut needs to be welded on the workpiece, the rotating cylinder 4 can drive the pressing block 6 to rotate to the position above the nut, then the lifting cylinder 5 acts and drives the pressing block 6 to press the nut on the workpiece, at this time, the external six-axis robot can spot weld the nut on the workpiece, after the spot welding is completed, the lifting cylinder 5 drives the pressing block 6 to rise, then the rotating cylinder 4 drives the pressing block 6 to rotate by 90 degrees, so that the six-axis robot performs full welding on the nut, avoids the influence of the pressing block 6 on the welding operation of the six-axis robot, prevents welding interference, and effectively improves the welding quality between the nut and the workpiece.

[0032] The ejecting cylinder 7 is arranged on the bottom of the jig seat 1, the movable end of the ejecting cylinder 7 is arranged upward and connected with the ejecting block 8, and the ejecting block 8 is used for ejecting the workpiece from the profile positioning block 2 along with the lifting movement of the ejecting cylinder 7. When the nut completes the welding operation, the user can loosen the pressing buckle assembly 3 and eject the workpiece from the jig seat 1 through the ejecting block 8, so as to realize the rapid taking of the workpiece.

[0033] As shown in Figure 2 , further, the ejecting block 8 is provided with an upwardly arranged ejecting rod 81, and the jig seat 1 is provided with an ejecting hole 100 for the ejecting rod 81 to pass through, so that the workpiece can be prevented from deviating or tilting during the ejecting process, and the workpiece can be smoothly ejected.

[0034] As shown in Figure 2 , further, the number of the positioning pins 10 is three, and the pressing block 6 has a trident structure, so that the jig can simultaneously position and fix three nuts at a time, and the welding efficiency of the nut is improved.

[0035] Further, the pressing block 6 is made of rubber material. The rubber material has a high friction coefficient, which can increase the friction between the pressing block 6 and the nut when the nut is pressed, prevent the nut from sliding or moving during the spot welding process, and further improve the welding precision of the nut.

[0036] As shown in Figure 1 , further, the profile positioning block 2 has a cylindrical structure, so that the workpiece can be quickly assembled and positioned on the jig seat 1.

[0037] Further, the pressing buckle assembly 3 is a quick clamp. The quick clamp can realize quick clamping and releasing through a lever mechanism, and the clamping mode is simple and convenient. It should be noted that the quick clamp is prior art, and the structure and working principle of the quick clamp will not be described in detail in the embodiment.

[0038] As shown in Figure 2 Further, the jig seat 1 comprises a bottom plate 11, a support plate 12 and a top plate 13, the top plate 13 is located above the bottom plate 11, and the top plate 13 and the bottom plate 11 are connected through the support plate 12.

[0039] As shown in Figure 2 Further, the ejector cylinder 7 is arranged on the bottom plate 11, so that interference between the ejector cylinder 7 and other operation parts can be avoided, and the safety of the welding operation is improved.

[0040] The above-described embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent ones; and these modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A nut welding jig based on a six-axis robot, characterized in that: It includes a fixture seat, a contour positioning block, a buckle assembly, a rotary cylinder, a lifting cylinder, a pressing block, an ejection cylinder and an ejection block; A plurality of contoured positioning blocks are provided on the top of the jig seat, and the contoured positioning blocks are used to position and connect with the workpiece to which the nut is to be welded. A plurality of positioning pins are provided on the top of the jig seat, and the positioning pins partially pass through the workpiece, and the positioning pins are used to position and place the nut. Two groups of buckle assemblies are respectively provided on both sides of the jig seat, and the buckle assemblies are used to press the workpiece onto the jig seat; The rotating cylinder is arranged on the side wall of the middle part of the fixture seat, and the movable end of the rotating cylinder is connected to the lifting cylinder. The movable end of the lifting cylinder is arranged upward and is connected to the lower pressing block through a connecting arm. The lower pressing block is used to press the nut on the workpiece as the lifting cylinder moves up and down. The ejection cylinder is arranged at the bottom of the fixture seat, and the movable end of the ejection cylinder is arranged upward and connected to the ejection block. The ejection block is used to eject the workpiece from the contour positioning block as the ejection cylinder moves upward.

2. The nut welding jig based on a six-axis robot according to claim 1 is characterized in that: The ejection block is provided with an upwardly disposed ejector rod; The fixture seat is provided with an ejection hole for the ejector rod to pass through.

3. The nut welding jig based on a six-axis robot according to claim 1 is characterized in that: The number of the positioning pins is three, and the pressing block is in a trident-shaped structure.

4. The nut welding jig based on a six-axis robot according to claim 1 is characterized in that: The pressing block is made of rubber.

5. The nut welding jig based on a six-axis robot according to claim 1 is characterized in that: The contoured positioning block is in a cylindrical structure.

6. The nut welding jig based on a six-axis robot according to claim 1, characterized in that: The buckle assembly is a quick clamp.

7. The nut welding jig based on a six-axis robot according to claim 1, characterized in that: The fixture seat includes a bottom plate, a support plate and a top plate; The top plate is located above the bottom plate, and the top plate and the bottom plate are connected via the support plate.

8. The nut welding jig based on a six-axis robot according to claim 7, characterized in that: The ejection cylinder is arranged on the bottom plate.

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