CN202388179U - Positioning device for welding - Google Patents

Abstract

The utility model discloses a positioning device for welding, which comprises a fixing seat and a stepped pin. The cover at the notch of the slot is provided with a pressure plate for axially limiting the step pin, the upper positioning end of the step pin passes through the pressure plate, and a compression spring is provided between the fixed end and the bottom of the accommodating slot. First, set the No. 1 part on the large diameter section of the positioning end, and the No. 1 part is attached to the pressure plate, so as to realize the positioning of the No. 1 part, and then set the No. 2 part on the small diameter section, and continue to press the No. 2 part. , the No. 2 part will abut against the axial end face of the large-diameter section. If you continue to press down, the No. 2 part will drive the large-diameter section to move down until the No. 2 part conflicts with the No. 1 part. At this time, the No. 2 part is completed. The assembly of the part and the No. 1 part, and the assembly accuracy in this state is high, and there will be no problems of movement and rebound. After welding, it is a qualified product.

Description

A positioning device for welding

technical field

The utility model relates to a positioning device, in particular to a welding positioning device which can automatically adjust the positioning height.

Background technique

During the welding process, it is often encountered that two parts with different apertures need to be welded together, and the positioning device used in the solution for this type of welding is mainly a step pin and a fixing seat for fixing the step pin. The pin includes a fixed end and a positioning end, the fixed end is fixedly connected with the fixing seat, the positioning end has a large-diameter section and a small-diameter section with unequal diameters, and the large-diameter section and the smaller-diameter section are close to the fixing seat. During welding, the No. 1 part and the No. 2 part need to be welded and fixed through the positioning device, and the No. 1 part is provided with a No. 1 hole suitable for the large-diameter section, and the No. 2 part is provided with a No. 2 hole suitable for the small-diameter section. .

During work, the No. 1 part is sleeved on the large-diameter section, and the No. 2 part is sleeved on the small-diameter section. The holes on each part are aligned with each other through the limit of the large-diameter section and the small-diameter section, and then welded and fixed. Among them, the thickness of the large-diameter section along the axial direction of the stepped pin is less than or equal to the thickness of the No. 1 part, so that the No. 2 part can be completely attached to the No. 1 part, otherwise it will be limited by the upper end surface of the large-diameter section, but Create a gap between part 1 and part 2.

However, since the thickness of the No. 1 part is often thinner, and because the thickness of the large diameter section is less than or equal to the thickness of the No. 1 part, before or during the welding process, the parts are subject to vibration, or rebound, or because of the Affected by adverse factors such as local micro-deformation, the No. 1 part is easy to detach from the upper axial end surface of the large-diameter section. In this case, it is difficult to detect, and if welding is implemented, it will lead to the generation of substandard products, and rework or rework will inevitably increase production costs and cause unnecessary waste.

Contents of the invention

In order to overcome the deficiencies of the prior art, the utility model provides a positioning device for welding which can avoid parts from running, thereby improving the qualified rate of parts welding.

The technical solution adopted by the utility model to solve the technical problem is: a positioning device for welding, including a fixed seat and a step pin, the step pin includes a fixed end and a positioning end, and the fixed seat is provided with a mounting bracket for the step pin. The accommodating groove is used, and the notch of the accommodating groove is covered with a pressure plate for axially limiting the step pin. With compression spring.

It is further set as: the bottom of the accommodating tank is provided with an adjustment screw hole that runs through the fixing seat, and a matching adjustment bolt is provided in the adjustment screw hole, one end of the compression spring is in conflict with the adjustment bolt, and the other end is in conflict with the adjustment bolt. conflicts with the fixed end.

By adopting the above-mentioned technical scheme, by turning the adjusting bolt, the depth of the adjusting bolt in the adjusting screw hole is realized, and the compression spring which conflicts with the end of the adjusting bolt is compressed or released, thereby adjusting the pressure on the stepped pin at the other end of the compression spring. Spring force, so the stress on the step pin can be controlled according to production needs.

It is further provided that: a spring groove for installing a compression spring is opened on the axial end surface of the fixed end.

By adopting the above technical solution, the compression spring can be inserted into the spring groove, thereby improving the stability of the stepped pin during operation.

It is further configured that: the fixing seat and the pressing plate are respectively provided with corresponding fixing screw holes, and fixing bolts are arranged in the fixing screw holes.

It is further provided that an adjusting gasket is arranged between the fixed seat and the pressing plate.

Using the above technical scheme, the threaded connection between the fixed seat and the pressure plate makes it easier to disassemble and install the fixed seat and the pressure plate, thereby facilitating the maintenance of the step pin and the compression spring. Adjustment, so as to achieve accurate positioning of the parts, reduce the welding deviation caused by insufficient positioning height caused by the rebound deformation of the parts.

The beneficial effect of the utility model is: when the stepped pin is subjected to axial pressure, the stepped pin will move in the axial direction, thereby realizing the expansion and contraction of the stepped pin in the accommodating groove. First, set the No. 1 part on the large diameter section of the positioning end, and the No. 1 part is attached to the pressure plate, so as to realize the positioning of the No. 1 part, and then set the No. 2 part on the small diameter section, and continue to press the No. 2 part. , the No. 2 part will abut against the axial end face of the large-diameter section. If you continue to press down, the No. 2 part will drive the large-diameter section to move down until the No. 2 part conflicts with the No. 1 part. At this time, the No. 2 part is completed. The assembly of the part and the No. 1 part, and the assembly accuracy in this state is high, there will be no problems of movement and rebound, and it is a qualified product after welding.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model.

FIG. 2 is a partial cross-sectional view of FIG. 1 .

Fig. 3 is a partial sectional view of the embodiment of the utility model.

Fig. 4 is a schematic structural diagram of a stepped pin according to an embodiment of the present invention.

Fig. 5 is a perspective view of a working state of the embodiment of the present invention.

Fig. 6 is a perspective view of another working state of the embodiment of the present invention.

Detailed ways

Below in conjunction with accompanying drawing, the utility model will be further described:

As shown in Figures 1, 2, and 3, this embodiment includes a fixed seat 1 and a stepped pin 2. The stepped pin 2 includes a fixed end 21 and a positioning end 22. The accommodating groove 11 is used, and the notch of the accommodating groove 11 is covered with a pressure plate 3 for axially limiting the step pin 2 . The fixed seat 1 and the pressure plate 3 are respectively provided with corresponding fixed screw holes 4, and the fixed screw holes 4 are provided with matching fixing bolts 5, and a number of adjustment pads are arranged between the fixed seat 1 and the pressure plate 3. slice 6. The step pin 2 is inserted into the accommodation groove 11 , the upper fixed end of the step pin 2 is set toward the bottom of the accommodation groove 11 , and the upper positioning end of the step pin 2 is set through the pressing plate 3 . The bottom of the accommodating tank 11 is provided with an adjusting screw hole 111 penetrating through the fixing base 1 , and a matching adjusting bolt 112 is arranged in the screw hole 111 . A compression spring 7 is also installed in the accommodating groove 11, and the compression spring 7 is located between the fixed end 21 and the bottom of the accommodating groove 11. One end of the compression spring 7 is in conflict with the adjusting bolt 112, and the other end is in contact with the fixed end. 21 conflicts. Wherein, a spring groove 211 is defined on the upper axial end surface of the fixed end 21 , and the end of the compression spring 7 that is in contact with the fixed end 21 is inserted into the spring groove 211 . In addition, as shown in FIG. 4 , the positioning end 22 includes a large-diameter section 221 and a small-diameter section 222 with unequal diameters, and the large-diameter section 221 and the small-diameter section 222 are close to the limiting block 23 . In this embodiment, the number of steps on the positioning end 22 of the step pin 2 is two, which are respectively composed of a large diameter section 221 and a small diameter section 222. However, the protection scope of the present invention also includes more steps.

In the utility model, when the stepped pin 2 is subjected to axial pressure, the stepped pin 2 will move in the axial direction, thereby realizing the expansion and contraction of the stepped pin 2 in the accommodating groove 11 . First, as shown in Figure 5, the No. 1 part 8 is sleeved on the large-diameter section 221 of the positioning end 22, and the No. 1 part 8 is attached to the pressure plate 3, thereby realizing the positioning of the No. 1 part 8; then, as shown in Fig. 6 As shown, the No. 2 part 9 is sleeved on the small-diameter section 222, and the No. 2 part 9 is exerted downward by the pressure head, then the No. 2 part 9 will abut against the axial end surface of the large-diameter section 221. Press, then No. 2 part 9 will drive the large-diameter section 221 to move down until No. 2 part 9 conflicts with No. 1 part 8. At this time, the assembly of No. 2 part 9 and No. 1 part 8 is completed, and the assembly under this state The precision is high, there will be no problems of movement and rebound, and it is a qualified product after welding.

Claims (5)

1. A positioning device for welding, comprising a fixed seat (1) and a stepped pin (2), the stepped pin (2) comprising a fixed end (21) and a positioning end (22), characterized in that: the fixed seat (1) is provided with an accommodating groove (11) for the installation of the stepped pin (2). The upper positioning end (22) of the step pin (2) passes through the pressing plate (3) and is set, and a compression spring (7) is arranged between the fixed end (21) and the groove bottom of the accommodating groove (11). 2. The positioning device for welding according to claim 1, characterized in that: the bottom of the accommodating groove (11) is provided with an adjusting screw hole (111) set through the fixing seat (21), and the adjusting screw hole ( 111) is provided with a matching adjusting bolt (112), one end of the compression spring (7) is in conflict with the adjusting bolt (112), and the other end is in conflict with the fixed end (21). 3. The positioning device for welding according to claim 1 or 2, characterized in that: a spring groove (211) for installing the compression spring (7) is opened on the upper axial end surface of the fixed end (21). 4. The positioning device for welding according to claim 1, characterized in that: the fixed seat (1) and the pressure plate (3) are respectively provided with corresponding fixing screw holes (4), and the fixing screw holes (4) There are fixing bolts (5) inside. 5. The positioning device for welding according to claim 4, characterized in that: an adjusting washer (6) is arranged between the fixing seat (1) and the pressing plate (3).

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