CN211219382U - A scissor arm positioning and welding tool - Google Patents

Abstract

The utility model discloses a scissor arm positioning and welding tool, which comprises a frame, a first positioning seat, a second positioning seat, a shaft hole positioning mechanism and an inner support mechanism mounted on the frame. The first positioning seat is mounted on the scissors fork. At the end of the arm, the second positioning seat is installed on both sides of the scissor arm, and the shaft hole positioning mechanism is arranged on both sides of the scissor arm. The shaft hole locates the telescopic piece, the inner support mechanism is arranged in the scissor arm, and the inner support mechanism includes a sliding shaft and an inner support telescopic piece that drives the sliding axial movement of the inner wall of the scissor arm. The utility model is a welding special tool for the scissor arm. The tool not only improves the efficiency of positioning and welding of workers, but also improves the positioning accuracy of each component of the scissor arm, thereby improving the consistency and qualification of products. It completely avoids redundant processes such as manual correction, and saves welding time and cost.

Description

A scissor arm positioning and welding tool

technical field

The utility model belongs to the field of welding tooling fixtures, in particular to a scissor arm positioning and welding tooling.

Background technique

At present, the tack welding of the existing scissor arm mainly depends on the measuring instruments and the skill level of the workers, and the tack welding accuracy cannot be controlled. Moreover, in the manual welding process after tack welding, since the workpiece is not rigidly fixed, the welding seam shrinks after cooling, resulting in the deformation of the scissor arm itself, resulting in poor product consistency and low pass rate. Therefore, usually the workpiece needs to be manually corrected after welding and then processed as a whole.

At the same time, since the positioning accuracy needs to be repeatedly confirmed and guaranteed by manual use of measuring instruments, the requirements for workers' skill level are high, the work efficiency is low, and the positioning accuracy and interchangeability are poor.

Utility model content

The utility model aims to provide a scissor arm positioning and welding tool, so as to solve the above problems.

In order to achieve the above purpose, the utility model discloses a scissor arm positioning and welding tool, which includes a frame and a first positioning seat, a second positioning seat, a shaft hole positioning mechanism and an inner support mechanism installed on the frame. The first positioning seat is installed on the end of the scissor arm, the second positioning seat is installed on both sides of the scissor arm, and the shaft hole positioning mechanism is arranged on both sides of the scissor arm, The shaft hole positioning mechanism includes a positioning thimble and a shaft hole positioning telescopic piece that drives the positioning thimble to locate the shaft hole on the scissor arm. The inner support mechanism is arranged in the scissor arm, and the inner support mechanism includes A sliding shaft and an inner support telescopic piece that drives the sliding shaft to move on the inner wall of the scissor arm.

Further, the positioning thimble is provided with a boss that can be inserted into the shaft hole on the scissor arm to radially locate the shaft hole on the scissor arm, and a thimble shaft for axial positioning of the shaft hole on the scissor arm. shoulder.

Further, the shaft hole positioning mechanism further includes a guide sleeve and a guide shaft, the guide sleeve is mounted on the frame, the guide shaft is slidably connected in the guide sleeve, and one end of the guide shaft is connected to the guide sleeve. The moving end of the shaft hole positioning telescopic piece is connected, and the other end is detachably connected with the positioning thimble.

Further, the end of the guide sleeve is provided with a limit end cover, the end of the guide shaft close to the positioning thimble is provided with a guide shaft shoulder, and the guide shaft shoulder is limited by the limit end cover. bit.

Further, the inner support mechanism further includes a mounting seat, a guide cylinder and a connecting rod, the inner support telescopic part and the guide cylinder are mounted on the mounting seat, the mounting seat is mounted on the frame, and the sliding The shaft is slidably connected in the guide cylinder, one end of the sliding shaft is hinged with one end of the connecting rod, the other end extends out of the guide cylinder, and the other end of the connecting rod is connected to the inner support telescopic piece The telescopic end is hinged.

Further, the inner support telescopic piece and the shaft hole positioning telescopic piece are both pneumatic drive cylinders.

Further, the sliding axis is perpendicular to the movement direction of the piston rod, and when the piston rod extends outward to the limit position, the connecting line between the hinge centers of the two ends of the connecting rod and the axis of the piston rod. Vertical setting.

Further, the end of the sliding shaft is detachably connected with a positioning mandrel, the end of the positioning mandrel is provided with a guide chamfer, and a limit shoulder is formed at the connection between the positioning mandrel and the sliding shaft. .

Further, the second positioning seat is provided with a T-shaped groove in a vertical direction, and a T-shaped sliding block that can be abutted with the scissor arm is slidably connected in the T-shaped groove, and the T-shaped sliding block is slidably connected. One side of the scissor arm is provided with an abutment surface that can fit with the side surface of the scissor arm.

Further, the frame is also provided with a connecting plate clamping mechanism that presses both ends of a connecting plate to the oil cylinder mounting plate on both sides of the scissor arm, and the connecting plate clamping mechanism includes a pressure head and a driving pressure. The head compresses the connecting plate's ram to drive the cylinder.

Compared with the prior art, the advantages of the present utility model are:

The utility model is a welding special tool for the scissor arm. The tool not only improves the efficiency of positioning and welding of workers, but also improves the positioning accuracy of each component of the scissor arm, thereby improving the consistency and qualification of products. It completely avoids redundant processes such as manual correction, and saves welding time and costs.

The present utility model will be described in further detail below with reference to the accompanying drawings.

Description of drawings

The accompanying drawings constituting a part of the present application are used to provide further understanding of the present invention, and the schematic embodiments of the present invention and descriptions thereof are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

1 is a schematic axonometric view of a scissor arm positioning and welding tool disclosed in a preferred embodiment of the present utility model;

2 is a schematic front view of a scissor arm positioning and welding tool disclosed in a preferred embodiment of the present utility model;

3 is a schematic axonometric view of the shaft hole positioning mechanism disclosed in the preferred embodiment of the present invention;

Figure 4 is an enlarged schematic diagram at A;

Fig. 5 is the axonometric schematic diagram of the inner support mechanism disclosed by the preferred embodiment of the present invention;

6 is a schematic front view of the inner support mechanism disclosed in the preferred embodiment of the present invention.

illustration:

1. Frame; 2. The first positioning seat; 3. The second positioning seat; 4. The shaft hole positioning mechanism; 5. The inner support mechanism; 6. The scissor arm; 7. The positioning thimble; , sliding shaft; 10, inner support cylinder; 11, boss; 12, thimble shaft shoulder; 13, guide sleeve; 14, guide shaft; 15, limit end cover; 16, guide shaft shoulder; 17, mounting seat ;18, guide cylinder; 19, connecting rod; 20, positioning mandrel; 21, guide chamfer; 22, limit shoulder; 23, T-slot; 24, T-shaped slider; 25, oil cylinder mounting plate; 26 , connecting plate; 27, connecting plate clamping mechanism; 28, indenter; 29, indenter driving cylinder; 30, turntable; 31, sliding shaft shoulder; 32, sliding shaft end cover.

Detailed ways

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

As shown in Figures 1-6, the present utility model discloses a scissor arm positioning and welding tool, including a frame 1, a first positioning seat 2, a second positioning seat 3 and a shaft hole positioning mechanism 4 mounted on the frame 1 And the inner support mechanism 5, the frame 1 is welded with square tubes, and the two ends are provided with turntables 30, so as to facilitate installation on the turntable or positioner, and realize welding after the scissor arm 6 is turned over. The scissor arm 6 is a left-right symmetrical structure, including a square tube, a shaft sleeve, a pipe fitting, an oil cylinder mounting plate 25 and a connecting plate 26 welded together. The first positioning seat 2 is installed at the end of the scissor arm 6 for shearing. For the longitudinal positioning of the fork arm 6, the second positioning seat 2 is installed on both sides of the scissor fork arm 6 for the lateral positioning of the scissor fork arm 6, and the shaft hole positioning mechanism 4 is arranged on both sides of the scissor fork arm 6 for cutting Positioning of parts or components with holes in the fork arm 6, the shaft hole positioning mechanism 4 includes a positioning thimble 7 and a driving positioning thimble 7 to locate the shaft hole positioning telescopic piece of the shaft hole on the scissor arm 6, and the shaft hole positioning telescopic piece is the shaft The hole positioning cylinder 8, the inner support mechanism 5 is arranged in the scissor arm 6, and the inner support mechanism 5 includes a sliding shaft 9 and an inner support telescopic piece that drives the sliding shaft 9 to move toward the inner wall of the scissor arm 6, specifically, the inner support telescopic piece It is the inner support cylinder 10 . In this embodiment, the positioning thimble 7 is provided with a boss 11 which can be inserted into the shaft hole of the scissor arm 7 to locate the shaft hole of the scissor arm 7 radially, and a boss 11 used for the axial positioning of the shaft hole of the scissor arm 7 The thimble shaft shoulder 12 is used to ensure accurate positioning of the shaft holes of the pipe parts on the scissor arm 7, the holes on the square pipe, etc.

In this embodiment, in order to ensure the coaxiality of the positioning thimble 7 on both sides of the scissor arm 6, the shaft hole positioning mechanism 4 further includes a guide sleeve 13 and a guide shaft 14. The guide sleeve 13 is installed on the frame 1, and the guide shaft 14 is seamlessly slid into the guide sleeve 13, one end of the guide shaft 14 is connected with the end of the piston rod of the shaft hole positioning cylinder 8, and the other end is detachably connected with the positioning thimble 7, and the positioning thimble 7 can be based on the relative distance. It needs to be replaced and adjusted, so that it can adapt to the positioning of pipe parts with different pipe diameters and expand the scope of application of the positioning mechanism.

In this embodiment, the end of the guide sleeve 13 is provided with a limit end cover 15 (fixed by screws), and one end of the guide shaft 14 close to the positioning thimble 7 is provided with a guide shaft shoulder 16 , and the guide shaft shoulder 16 passes through the limit The position end cap 15 is limited. Therefore, through the limiting effect of the limiting end cover 15, the phenomenon that the cylinders on both sides push the cylinders is prevented. At the same time, the limiting end cover 15 can prevent dust and welding spatter. During specific operation, referring to FIG. 3 , the air pressure of the shaft hole positioning cylinder 8 arranged on the upper side is greater than that of the shaft hole positioning cylinder 8 on the lower side, so that the thrust of the shaft hole positioning cylinder 8 on the upper side is higher than that of the shaft hole positioning cylinder 8 on the lower side. Cylinder 8 thrust is greater than a factor. At this time, the upper guide shaft shoulder 16 is fitted with the limit end cover 15 to determine the axial position of the pipe parts, etc., and there is an axial gap between the lower guide shaft shoulder 16 and the limit end cover 15 , so that the positioning thimble 7 on the lower side always has a thrust acting on parts such as pipes, so as to meet the requirements of axial positioning of the parts.

In this embodiment, the inner support mechanism 5 is a T-shaped layout structure stacked on the left and right, and further includes a mounting seat 17, a guide cylinder 18 and a connecting rod 19, and the inner support cylinder 10 and the guide cylinder 18 are installed on the mounting seat 17. The mounting seat 17 is installed on the frame 1, the sliding shaft 9 is slidably connected in the guide cylinder 18, one end of the sliding shaft 9 is hinged with one end of the connecting rod 19, the other end extends out of the guide cylinder 18, and the other end of the connecting rod 19 is connected to the inner The telescopic end of the strut cylinder 10 is hinged, which converts the vertical motion of the piston rod of the inner strut cylinder 10 into the horizontal linear motion of the sliding shaft 9, so that the sliding shaft 9 transmits the force to the square tube of the scissor arm 6 and pushes it to the top. Tighten on the second positioning seat 3, and then clamp and position the workpiece. In this layout, the inner support cylinder 10 has a compact structure and does not occupy the internal space of the scissor arm 6, so that it is convenient for the scissor arm 6 with limited space. internal layout. Further, the sliding shaft 9 is perpendicular to the movement direction of the piston rod of the inner support cylinder 10, and when the piston rod of the inner support cylinder 10 extends outward to the limit position, the connecting line between the hinged centers of the two ends of the connecting rod 19 and the inner support The axis of the piston rod of the cylinder 10 is arranged vertically. Therefore, the self-locking of the sliding shaft 9 can be realized, and the workpiece can be clamped and positioned more stably.

In this embodiment, in order to facilitate the positioning of the sliding shaft 9 to the shaft hole, etc., the end of the sliding shaft 9 is detachably screwed with a positioning mandrel 20, and the end of the positioning mandrel 20 is provided with a guide chamfer 21. A limit shaft shoulder 22 is formed at the connection between the mandrel 20 and the sliding shaft 9 , and shaft holes with different lengths and inner diameters can be positioned by replacing different positioning mandrels 20 .

In this embodiment, the second positioning seat 3 is provided with a T-shaped groove 23 in a vertical direction, and a T-shaped sliding block 24 that can abut against the scissor arm 6 is slidably connected in the T-shaped groove 23. The T-shaped sliding block 24 can be slid into or out of the T-shaped groove 23 along the vertical direction, and one side of the T-shaped slider 24 is provided with an abutment surface that can fit with the side surface of the scissor arm 6 .

In this embodiment, referring specifically to FIG. 1 , the frame 1 is also provided with a connecting plate clamping mechanism 27 for pressing both ends of a connecting plate 26 to the oil cylinder mounting plates 25 on both sides of the scissor arm 6 . The clamping mechanism 27 includes a pressure head 28 and a driving pressure head 28 to press the pressure head driving cylinder 29 connected to the plate 26, thereby realizing the positioning and clamping of all components on the scissor arm 6, which is convenient for subsequent automatic welding.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (10)

1. A scissor arm positioning and welding tool, characterized in that it comprises a frame (1) and a first positioning seat (2), a second positioning seat (3), a shaft hole mounted on the frame (1) A positioning mechanism (4) and an inner support mechanism (5), the first positioning seat (2) is mounted on the end of the scissor arm (6), and the second positioning seat (3) is mounted on the scissors On both sides of the fork arm (6), the shaft hole positioning mechanism (4) is arranged on both sides of the scissor arm (6), and the shaft hole positioning mechanism (4) includes a positioning ejector pin (7) and a drive for the The positioning thimble (7) locates the shaft hole positioning telescopic piece of the upper shaft hole of the scissor arm (6), the inner support mechanism is arranged in the scissor arm (6), and the inner support mechanism includes a sliding shaft ( 9) and an inner support telescopic piece that drives the sliding shaft (9) to move toward the inner wall of the scissor arm (6). 2 . The scissor arm positioning and welding tool according to claim 1 , wherein the positioning thimble ( 7 ) is provided with a shaft hole that can be inserted into the scissor arm ( 6 ) to connect the scissors to the scissors. 3 . The boss (11) on the arm (6) for the axial positioning of the shaft hole and the ejector pin shoulder (12) for the axial positioning of the shaft hole on the scissor arm (6). 3. The scissor arm positioning and welding tool according to claim 2, wherein the shaft hole positioning mechanism (4) further comprises a guide sleeve (13) and a guide shaft (14), the guide sleeve (13) is installed on the frame (1), the guide shaft (14) is slidably connected in the guide sleeve (13), and one end of the guide shaft (14) is connected to the shaft hole positioning telescopic member The moving end is connected, and the other end is detachably connected with the positioning thimble (7). 4. The scissor arm positioning and welding tool according to claim 3, wherein the end of the guide sleeve (13) is provided with a limit end cover (15), and the guide shaft (14) is close to One end of the positioning thimble (7) is provided with a guide shaft shoulder (16), and the guide shaft shoulder (16) is limited by the limit end cover (15). 5. The scissor arm positioning and welding tool according to any one of claims 1-4, wherein the inner support mechanism (5) further comprises a mounting seat (17), a guide cylinder (18) and a connecting rod ( 19), the inner support telescopic piece and the guide cylinder (18) are mounted on the mounting seat (17), the mounting seat (17) is mounted on the frame (1), the sliding shaft (9) It is slidably connected in the guide cylinder (18), one end of the sliding shaft (9) is hinged with one end of the connecting rod (19), and the other end extends out of the guide cylinder (18). The other end of (19) is hinged with the telescopic end of the inner support telescopic piece. 6. The scissor arm positioning and welding tool according to claim 5, wherein the inner support telescopic piece is an inner support cylinder (10), and the shaft hole positioning telescopic piece is a shaft hole positioning cylinder (8) . 7. The scissor arm positioning and welding tool according to claim 6, wherein the sliding shaft (9) is perpendicular to the movement direction of the piston rod of the inner support cylinder (10), and the inner When the piston rod of the strut cylinder (10) extends outward to the limit position, the connecting line of the hinged center of the two ends of the connecting rod (19) is perpendicular to the axis of the piston rod of the inner strut cylinder (10). 8. The scissor arm positioning and welding tool according to claim 6, wherein the end of the sliding shaft (9) is detachably connected with a positioning mandrel (20), and the positioning mandrel (20) A guide chamfer (21) is provided at the end of the ), and a limit shoulder (22) is formed at the connection between the positioning mandrel (20) and the sliding shaft (9). 9. The scissor arm positioning and welding tool according to claim 6, wherein the second positioning seat (3) is provided with a vertical T-slot (23), the T-slot ( 23) A T-shaped slider (24) that can be in contact with the scissor arm (6) is slidably connected inside, and one side of the T-shaped slider (24) is provided with a T-shaped slider (24) that can be connected to the scissor arm (6). ) on the side of the abutment surface. 10. The scissor arm positioning and welding tool according to claim 6, characterized in that, the frame (1) is also installed with two ends of a connecting plate (26) pressed to the scissor arm (6) The connecting plate clamping mechanism (27) on the oil cylinder mounting plates (25) on both sides, the connecting plate clamping mechanism (27) comprises a pressure head (28) and a driving pressure head (28) to press the connecting plate (28). 26) to drive the cylinder (29).

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