Welding and positioning mechanism for dustproof cover of piston rod

Abstract

The utility model discloses a piston rod dustproof cover welding positioning mechanism. An upper clamping mechanism is oppositely arranged on the opening side of a groove of a lower clamping mechanism. And a rotary positioning component is arranged in the upper clamping mechanism, faces the groove and is matched with the lower clamping mechanism to clamp and fix the end part of the piston rod. Firstly, positioning of the piston rod is changed to the two rod ends of the piston rod, so that the piston rod and the dustproof cover can be inversely welded in a mode beneficial to guaranteeing the strength of a welding seam, and secondly, a positioning clamp is arranged at the bottom of the piston rod, and a positioning guide-in opening is designed to be of a structure with the wide lower portion and the narrow upper portion to be matched with a chuck capable of rotating in a self-adaptive mode. The clamp can be quickly connected to the end of the piston rod, and working efficiency is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of shock absorber welding positioning, in particular to a piston rod dust cover welding positioning mechanism. Background Art

[0002] In the existing welding process of piston rod dust cover, most of the time, only the dust cover and the loading end of the piston rod are clamped for positioning. Due to product upgrades, the size of the top of the piston rod relative to the exposed part of the dust cover is getting shorter and shorter, which makes the original positioning method more difficult to locate and can only rely on manual calibration, affecting the welding efficiency. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the purpose of the utility model is to provide a piston rod dust cover welding positioning mechanism to improve the positioning efficiency while ensuring the welding quality.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A piston rod dust cover welding positioning mechanism,

[0006] An upper clamping mechanism is arranged opposite to the groove opening side of the lower clamping mechanism;

[0007] The upper clamping mechanism has a rotation positioning component therein, the rotation positioning component faces the groove and cooperates with the lower clamping mechanism to clamp and fix the end of the piston rod.

[0008] In a preferred embodiment of the utility model, the rotary positioning component includes a cylinder and a rotary stud connected to the cylinder, an upper end cover and a lower end cover fixed on one end of the rotary stud, and a guide positioning sleeve arranged in the lower end cover, the rotary stud has two mutually rotatable threaded ends and a press-fit end, and the upper end cover and the lower end cover are respectively assembled and fixed from both sides of the press-fit end.

[0009] In a preferred embodiment of the utility model, the lower end cover has an upwardly extending flange, the flange is cylindrical and extends circumferentially along the axis of the lower end cover, the outer periphery of the upper end cover has an outer edge extending downward and matching the outer peripheral profile of the flange, the outer edge is interference-connected with the flange to achieve fixation between the upper end cover and the lower end cover, and a through hole is also provided on the axis of the upper end cover, the threaded end passes through the through hole and is connected to the cylinder.

[0010] In a preferred embodiment of the present invention, a bearing structure is provided inside the rotation positioning component, and the threaded end and the press-fit end are respectively connected to the inner ring and the outer ring of the bearing structure.

[0011] In a preferred embodiment of the utility model, a positioning groove is provided in the guide positioning sleeve, and a guide groove communicating with the positioning groove is provided below the positioning groove, and the guide groove is in the shape of a cylinder which is wider at the bottom and narrower at the top.

[0012] In a preferred embodiment of the present invention, the guide and positioning sleeve is made of nylon.

[0013] In a preferred embodiment of the present invention, the included angle between two side edges of the guide groove is 31°.

[0014] The beneficial effects of the utility model are:

[0015] The utility model provides a piston rod dust cover welding positioning mechanism. On the one hand, the positioning of the piston rod is changed to its two rod ends, so that the piston rod and the dust cover can be invertedly welded in a manner that is beneficial to ensuring the strength of the weld. On the other hand, a positioning clamp is arranged at the bottom of the piston rod, and the positioning guide port is designed to be a structure that is wide at the bottom and narrow at the top with a chuck that can adaptively rotate, so that the clamp can quickly access the piston rod end, thereby ensuring work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0017] Figure 1 It is an overall schematic diagram of the welding machine and the clamp of the utility model.

[0018] Figure 2 It is a cross-sectional view of the rotation positioning component.

[0019] Figure 3 It is a cross-sectional view of the guide sleeve.

[0020] Figure 4 is a schematic diagram of the upper clamping mechanism.

[0021] Figure 5 It is a schematic diagram of welding work of the utility model. DETAILED DESCRIPTION

[0022] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings. The above description is simplified for the convenience of describing the present invention, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, it should not be understood as a limitation on the present invention.

[0023] The following will describe exemplary embodiments of the present application with reference to the accompanying drawings. However, it should be understood that the present application can be presented in a variety of different ways and is not limited to the embodiments described below. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments. In all drawings, the same reference numerals represent the same or functionally identical elements.

[0024] refer to Figure 1 A piston rod dust cover welding positioning mechanism is provided, the positioning mechanism is arranged in the upper clamping mechanism 20, and cooperates with the lower clamping mechanism 10 to clamp and fix the shock absorber piston rod 1. The lower clamping mechanism 10 has a groove 11 with an opening upward for placing the dust cover 3, and a round hole 12 is provided at the center of the groove 11 for the piston rod 1 body connection end to penetrate, and the upper and lower ends are positioned by pushing the piston rod 1 into the dust cover 3 through the upper clamping mechanism 20. The upper clamping mechanism 20 is provided with a rotating positioning member 22, which is self-adaptive and introduced into engagement with the end of the piston rod 1 when the upper clamping mechanism 20 approaches the lower end of the piston rod 1.

[0025] Figure 2 and Figure 3The structure of the rotating positioning component is shown. A bearing structure is arranged inside the rotating threaded column 26. The threaded end 26a and the press-fit end 26b are respectively connected to the inner and outer rings of the bearing, so that the threaded end 26a and the press-fit end 26b form a relatively rotatable structure. The upper and lower sides of the press-fit end 26b are enclosed by the upper end cover 23 and the lower end cover 24. Therefore, when the press-fit end 26b rotates relative to the threaded end 26a, the upper end cover 23 and the lower end cover 24 rotate synchronously therewith. The upper part of the lower end cover 24 has a flange 24a extending upward and forming a cylindrical structure enclosed on the circumference around its axis. The outermost side of the upper end cover 23 has an outer edge 23a adapted to the flange 24a and extending downward, and the outer side of the flange 24a is mutually engaged with the outer edge 23a in an interference fit. The press-fitting end 26b is embedded in the cylindrical hole surrounded by the inner side of the flange 24a. A through hole (not shown in the figure) is also provided at the axial position of the upper end cover 23. The inner diameter of the through hole is slightly larger than the outer diameter of the threaded end 26a. The press-fitting end 26b is fixed between the upper end cover 23 and the lower end cover 24. The threaded end 26a extends from the through hole to be connected and fixed with the cylinder body connector 21. The guide positioning sleeve 25 is installed in the mounting hole 24c of the lower end cover 24 and is clamped by the fastener from the outer side of the lower end cover 24 and fixed through the screw hole 24b. The guide positioning sleeve 25 is provided with a positioning groove 25a whose inner contour is similar to the end of the piston rod 1. The positioning groove 25a is connected with the guide groove 25b below. The guide groove 25b is cylindrical, and its bottom radius is larger than the radius of the joint between the top and the positioning groove 25a, so that it is beneficial for the guide positioning sleeve 25 to rotate synchronously when it contacts the end of the piston rod 1 to guide the piston rod 1 into the positioning groove 25a. Preferably, the included angle between the two sides of the guide groove 25b is 31°. Preferably, the guide sleeve 25 is made of nylon.

[0026] Combined with reference Figure 4 and Figure 4 The threaded end 26a is connected to the top cylinder 27 through the cylinder connector 21. The upper clamping mechanism 20 pushes the piston rod 1 downward under the action of the cylinder 27, and the bottom of the dust cover 3 (the dust cover is inverted in the figure) is welded from above by the welding gun 2, which is conducive to the accumulation of the weld bead at the overlap between the dust cover 3 and the piston rod 1 under the influence of gravity.

[0027] The singular forms "a", "an", "said" and "the" used in the specification include plural forms unless clearly indicated.

[0028] In the specification, when an element is said to be "on", "fixed" to, "connected" to, "engaged" to, etc., another element, the element may be directly on, fixed to, connected to, engaged to, or in contact with the other element, or there may be intervening elements. In the specification, when a feature is arranged "adjacent" to another feature, it may mean that the feature has a portion overlapping with the adjacent feature or a portion located above or below the adjacent feature.

Claims

1. A piston rod dust cover welding positioning mechanism, characterized in that: An upper clamping mechanism is arranged opposite to the groove opening side of the lower clamping mechanism; The upper clamping mechanism has a rotation positioning component therein, the rotation positioning component faces the groove and cooperates with the lower clamping mechanism to clamp and fix the end of the piston rod.

2. A piston rod dust cover welding positioning mechanism as claimed in claim 1, characterized in that: The rotary positioning component includes a cylinder and a rotary stud connected to the cylinder, an upper end cover and a lower end cover fixed on one end of the rotary stud, and a guide positioning sleeve arranged in the lower end cover. The rotary stud has two threaded ends and a press-fit end that rotate with each other. The upper end cover and the lower end cover are respectively assembled and fixed from both sides of the press-fit end.

3. A piston rod dust cover welding positioning mechanism as claimed in claim 2, characterized in that: The lower end cover has an upwardly extending flange, which is cylindrical and extends circumferentially along the axis of the lower end cover. The outer periphery of the upper end cover has an outer edge that extends downward and matches the outer peripheral profile of the flange. The outer edge is interference-connected with the flange to achieve fixation between the upper end cover and the lower end cover. A through hole is also provided on the axis of the upper end cover, and the threaded end passes through the through hole and is connected to the cylinder.

4. A piston rod dust cover welding positioning mechanism as claimed in claim 2, characterized in that: The rotary positioning component has a bearing structure therein, and the threaded end and the press-fit end are respectively connected to the inner ring and the outer ring of the bearing structure.

5. A piston rod dust cover welding positioning mechanism as claimed in claim 2, characterized in that: A positioning groove is arranged in the guide and positioning sleeve, and a guide groove is arranged below the positioning groove and communicated with the positioning groove. The guide groove is in the shape of a cylinder which is wider at the bottom and narrower at the top.

6. A piston rod dust cover welding positioning mechanism as claimed in claim 5, characterized in that: The guide and positioning sleeve is made of nylon.

7. A piston rod dust cover welding positioning mechanism as claimed in claim 5, characterized in that: The included angle of the two side edges of the guide groove is 31°.

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