Positioning guide sleeve mechanism for projection welding machine

Abstract

The utility model relates to the technical field of automatic projection welding, in particular to a positioning guide sleeve mechanism for a projection welding machine, which comprises a lower electrode guide rod connecting guide sleeve, a telescopic guide sleeve and an insulating sleeve, the insulating sleeve is movably sleeved on the upper portion of an inner cavity of the telescopic guide sleeve, the large-diameter end of the lower electrode guide rod connecting guide sleeve is sleeved on the lower portion of the inner cavity of the telescopic guide sleeve in a threaded mode, and the bottom end of the insulating sleeve is in contact with the top end of the lower electrode guide rod connecting guide sleeve. When projection welding is carried out, the position of a bolt can be effectively positioned through the insulating sleeve, and the positioning guide sleeve mechanism can stretch and retract along with the lower electrode, so that the contact area of the telescopic guide sleeve and the electrode rod is reduced, spatter generated during projection welding can be effectively discharged through the hollow hole, and the problem that the positioning guide sleeve is prone to clamping the lower electrode rod is effectively solved; and the positioning guide sleeve mechanism can be recycled, so that the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automated projection welding, in particular to a positioning guide sleeve mechanism for a projection welding machine. Background Art

[0002] With the advancement of technology, especially in recent years with the introduction of intelligent vision technology into the welding field, conventional projection welding of parts by hand has gradually evolved to automated projection welding with robotic grasping of parts. Previously used projection welding machines were prone to spatter accumulation in the positioning guide sleeve mechanism. Over time, this could cause the sleeve to become stuck on the lower electrode rod, impacting operational efficiency.

[0003] Therefore, how to design a positioning guide sleeve mechanism that can enable splashes to escape from the electrode rod has become a research direction that those skilled in the art have devoted themselves to. Utility Model Content

[0004] In view of the above-mentioned problems, the present invention provides a positioning guide sleeve mechanism for a projection welding machine to solve the problem in the prior art that the positioning guide sleeve is easily stuck on the lower electrode rod in the automatic projection welding process of bolts.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] A positioning guide sleeve mechanism for a projection welding machine, comprising a lower electrode guide rod connecting guide sleeve, a telescopic guide sleeve and an insulating sleeve;

[0007] The insulating sleeve is movably sleeved on the upper part of the inner cavity of the telescopic guide sleeve, the large diameter end of the lower electrode guide rod connecting guide sleeve is threadedly sleeved on the lower part of the inner cavity of the telescopic guide sleeve, and the bottom end of the insulating sleeve is in contact with the top end of the lower electrode guide rod connecting guide sleeve.

[0008] In some embodiments, an annular step is provided on the inner side of the top end of the telescopic guide sleeve, and the outer diameter of the insulating sleeve is larger than the outer diameter of the annular step, which can effectively block the insulating sleeve and prevent it from sliding out from the top end of the telescopic guide sleeve.

[0009] In some embodiments, the top end of the insulating sleeve is provided with a chamfer to facilitate positioning of the bolt during welding.

[0010] In some embodiments, first hollow holes are arranged at intervals around the lower side of the telescopic guide sleeve, and second hollow holes are arranged on the upper side of the lower electrode guide rod connecting guide sleeve corresponding to the first hollow holes. The two are connected with bolts to correspond to each other to facilitate splash discharge and air release.

[0011] In some embodiments, the first hollow hole and the second hollow hole are both square.

[0012] In some embodiments, at least two groups of bosses are provided on the upper and lower outer walls of the telescopic guide sleeve, and each group of bosses includes a plurality of bosses, and the plurality of bosses are spaced apart along the circumference of the outer wall of the telescopic guide sleeve.

[0013] In some embodiments, the small-diameter end of the lower electrode guide rod connecting guide sleeve is provided with an internal thread adapted to the lower electrode guide rod so as to be connected to the lower electrode guide rod to achieve linkage positioning.

[0014] Compared with the prior art, the above utility model has at least one of the following advantages or beneficial effects:

[0015] The utility model provides a positioning guide sleeve mechanism for a projection welding machine. When projection welding is performed, the position of the bolt can be effectively positioned through the insulating sleeve, and the positioning guide sleeve mechanism can move with the telescopic movement of the lower electrode, thereby reducing the contact area between the telescopic guide sleeve and the electrode rod. Spatter generated during projection welding can be effectively discharged through the hollow hole, thereby effectively solving the problem that the positioning guide sleeve is easily stuck on the lower electrode rod; and the positioning guide sleeve mechanism can be recycled, thereby reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention and its features, configurations, and advantages will become more apparent upon reading the detailed description of the non-limiting embodiments described below with reference to the accompanying drawings. Like reference numerals indicate like parts throughout the drawings. The drawings are not necessarily drawn to scale, with emphasis placed on illustrating the subject matter of the present invention.

[0017] Figure 1 This is a structural diagram of a positioning guide sleeve mechanism for a projection welding machine in an embodiment of the present utility model;

[0018] Figure 2 This is an exploded schematic diagram of a positioning guide sleeve mechanism for a projection welding machine in an embodiment of the present utility model;

[0019] Figure 3 This is a cross-sectional schematic diagram of the application of the positioning guide sleeve mechanism in the embodiment of the present utility model;

[0020] In the figure: 1. Lower electrode guide rod connecting guide sleeve; 11. Second hollow hole; 2. Telescopic guide sleeve; 21. First hollow hole; 22. Boss; 3. Insulating sleeve; 101. Bolt to be welded; 102. Base material; 103. First electrode sheet; 104. First locking nut; 105. Second electrode sheet; 106. Second locking nut. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0022] like Figures 1 to 3As shown, the utility model discloses a positioning guide sleeve mechanism for a projection welding machine, comprising a lower electrode guide rod connecting guide sleeve 1, a telescopic guide sleeve 2 and an insulating sleeve 3; the insulating sleeve 3 is movably sleeved on the upper part of the inner cavity of the telescopic guide sleeve 2, the large diameter end of the lower electrode guide rod connecting guide sleeve 1 is threadedly sleeved on the lower part of the inner cavity of the telescopic guide sleeve 2, and the bottom end of the insulating sleeve 3 is in contact with the top end of the lower electrode guide rod connecting guide sleeve 1.

[0023] Specifically, an annular step is provided on the inner side of the top end of the telescopic guide sleeve 2, and the outer diameter of the insulating sleeve 3 is larger than the outer diameter of the annular step, thereby effectively blocking the insulating sleeve 3 and preventing it from slipping out from the top end of the telescopic guide sleeve 2; during assembly, the telescopic guide sleeve 2 is first inverted, and the insulating sleeve 3 is first assembled in the telescopic guide sleeve 2 from the bottom end of the telescopic guide sleeve 2, and then the lower electrode guide rod connecting guide sleeve 1 is threadedly connected to the bottom end of the telescopic guide sleeve 2.

[0024] In an embodiment of the present utility model, the top of the above-mentioned insulating sleeve 3 is provided with a chamfer to facilitate positioning during bolt welding; the first hollow holes 21 are provided at intervals around the lower side of the above-mentioned telescopic guide sleeve 2, and the upper side of the lower electrode guide rod connecting guide sleeve 1 is provided with a second hollow hole 11 corresponding to the first hollow hole 21, and the two are connected with each other by bolts to correspond to each other so as to discharge splashes and release air; specifically, the first hollow hole 21 and the second hollow hole 11 are both square.

[0025] Two groups of bosses 22 are provided on the upper and lower outer walls of the telescopic guide sleeve 2 , and each group of bosses 22 includes multiple bosses 22 , and the multiple bosses 22 are spaced apart along the circumference of the outer wall of the telescopic guide sleeve 2 to facilitate the discharge of splashes from the gaps between the bosses 22 .

[0026] In the embodiment of the present invention, the small-diameter end of the lower electrode guide rod connecting sleeve 1 is provided with an internal thread adapted to the lower electrode guide rod so as to be connected to the lower electrode guide rod to achieve linkage positioning.

[0027] like Figure 3 As shown, when in use, the upper electrode sheet 103 and the lower electrode sheet 105 are first bolted together through the upper locking nut 104 to form the lower electrode mechanism. Then, the positioning guide sleeve mechanism is inserted into the above-mentioned lower electrode mechanism, and the root is bolted with a second locking nut 106 to prevent loosening; the base material 102 with a bottom hole is placed on the lower electrode mechanism, and the bolt 101 to be welded is installed, and the bolt 101 to be welded is positioned in the insulating sleeve 3. During welding, the above-mentioned positioning guide sleeve mechanism is in an extended state, that is, it enters the above-mentioned electrode mechanism. After welding, the above-mentioned positioning guide sleeve mechanism is in a withdrawn state, that is, it is away from the above-mentioned electrode mechanism. This working method is conducive to positioning the parts, convenient removal of parts, and escape of spatter.

[0028] Those skilled in the art should understand that they can implement variations based on the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essence of the present invention and will not be described in detail here.

[0029] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-mentioned disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solution of the present invention, or modify them into equivalent embodiments with equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention that do not depart from the content of the technical solution of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A positioning guide sleeve mechanism for a projection welding machine, characterized in that: It includes a lower electrode guide rod connecting guide sleeve, a telescopic guide sleeve and an insulating sleeve; The insulating sleeve is movably sleeved on the upper part of the inner cavity of the telescopic guide sleeve, the large diameter end of the lower electrode guide rod connecting guide sleeve is threadedly sleeved on the lower part of the inner cavity of the telescopic guide sleeve, and the bottom end of the insulating sleeve is in contact with the top end of the lower electrode guide rod connecting guide sleeve.

2. The positioning guide sleeve mechanism for a projection welding machine according to claim 1, wherein: An annular step is provided on the inner side of the top end of the telescopic guide sleeve, and the outer diameter of the insulating sleeve is larger than the outer diameter of the annular step.

3. The positioning guide sleeve mechanism for a projection welding machine according to claim 1, wherein: The top of the insulating sleeve is provided with a chamfer.

4. The positioning guide sleeve mechanism for a projection welding machine according to claim 1, wherein: First hollow holes are arranged at intervals around the lower side of the telescopic guide sleeve, and second hollow holes are arranged on the upper side of the lower electrode guide rod connecting guide sleeve corresponding to the first hollow holes.

5. The positioning guide sleeve mechanism for a projection welding machine according to claim 4, wherein: The first hollow hole and the second hollow hole are both square.

6. The positioning guide sleeve mechanism for a projection welding machine according to claim 1, wherein: At least two groups of bosses are arranged on the upper and lower outer walls of the telescopic guide sleeve, and each group of bosses includes a plurality of bosses, and the plurality of bosses are arranged at intervals along the circumference of the outer wall of the telescopic guide sleeve.

7. The positioning guide sleeve mechanism for a projection welding machine according to claim 1, wherein: The small-diameter end of the lower electrode guide rod connecting guide sleeve is provided with an internal thread adapted to the lower electrode guide rod.

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