Mechanism with guide dead point

Abstract

A mechanism with a guide dead point comprises a mounting plate, a guide sleeve mounting seat, a guide rod, a hinge, a collision block, a limiting block mounting seat, a guide rod limiting block, a connecting arm, a positioning mechanism, an adjusting gasket, a guide rail, an air cylinder and a guide sleeve, and the limiting block mounting seat, the guide sleeve mounting seat and the air cylinder are sequentially mounted on the plane of the lower portion of the mounting plate; the guide rail is mounted on the upper plane of the mounting plate; the guide sleeve is arranged in the guide sleeve mounting seat; the guide rod penetrates through the guide sleeve, one end of the guide rod is connected with the air cylinder, and the other end of the guide rod is connected with the collision block. The guide rod limiting block and the adjusting gasket are mounted on the limiting block mounting seat; the positioning mechanism is connected with the hinge through the connecting arm; the hinge is hinged with the guide rod; and the positioning mechanism is arranged on a sliding block of the guide rail. According to the mechanism with the guiding dead point, the dead point positioning position is accurate and stable.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile manufacturing, in particular to a dead point mechanism of a battery box welding fixture. Background Art

[0002] In the design of welding fixtures, sometimes in order to facilitate the loading and unloading of workpieces, or to provide a larger welding space, it is necessary to design some movable positioning mechanisms. Such mechanisms are generally driven by cylinders, using linear guides as movable guides, and the reciprocating motion of the cylinders to achieve the movement of the workpiece positioning block.

[0003] Due to the compressible nature of gas, if such a mechanism is directly driven by a cylinder, when the external force applied to the workpiece positioning block is too large, the positioning block will often be displaced relative to the desired position. Therefore, in order to ensure the accuracy of the position of the positioning block, a dead point structure needs to be added to such a movable positioning mechanism. The characteristics of the dead point mechanism are used to ensure that the workpiece positioning block will not be displaced when an external force is applied.

[0004] The existing movable positioning mechanism often has the following two problems: 1) the dead point position is inaccurate, and the dead point is not reached or exceeded; 2) the hinge structure is unstable and the shaking amount is large. The above two problems will cause the position of the workpiece positioning block to deviate, affecting the welding quality of the workpiece. Summary of the invention

[0005] In order to solve the deficiencies in the prior art, the purpose of the utility model is to provide a dead point mechanism with a guide, which solves the problems of inaccurate dead point position and mechanism shaking by adding a limit block and a guide sleeve to the existing dead point mechanism.

[0006] To achieve the above-mentioned purpose, the utility model has a guide dead point mechanism, including a mounting plate, a guide sleeve mounting seat, a guide rod, a hinge, a bumper, a limit block mounting seat, a guide rod limit block, a connecting arm, a positioning mechanism, an adjustment gasket, a guide rail, a cylinder, and a guide sleeve, wherein:

[0007] The limit block mounting seat, the guide sleeve mounting seat and the cylinder are sequentially mounted on the lower plane of the mounting plate;

[0008] The guide rail is installed on the upper plane of the mounting plate;

[0009] The guide sleeve is arranged in the guide sleeve mounting seat;

[0010] The guide rod passes through the guide sleeve, one end of which is connected to the cylinder, and the other end of which is connected to the collision block;

[0011] The guide rod limit block and the adjustment gasket are installed on the limit block mounting seat;

[0012] The positioning mechanism is connected to the hinge via the connecting arm;

[0013] The hinge is hinged to the guide rod;

[0014] The positioning mechanism is mounted on a slider of the guide rail.

[0015] Further, the positioning mechanism includes a first positioning mechanism and a second positioning mechanism; the connecting arm includes a first connecting arm and a second connecting arm;

[0016] The first positioning mechanism is connected to one end of the first connecting arm;

[0017] The second positioning mechanism is connected to one end of the second connecting arm.

[0018] Further, the hinge comprises a first hinge and a second hinge;

[0019] One end of the first hinge is connected to the other end of the first connecting arm;

[0020] One end of the second hinge is connected to the other end of the second connecting arm.

[0021] Further, the other end of the first hinge and the other end of the second hinge are hinged to the guide rod.

[0022] Furthermore, the guide sleeve is an oil-free bushing.

[0023] Furthermore, the limit block mounting seat, the guide sleeve mounting seat and the cylinder are respectively mounted on the lower plane of the mounting plate by means of screws or welding.

[0024] Furthermore, one end of the guide rod is connected to the cylinder via a flexible joint.

[0025] Furthermore, the guide rod limit block and the adjustment gasket are mounted on the limit block mounting seat by means of screws.

[0026] Furthermore, the mounting plate is provided with a rectangular opening in the middle;

[0027] The connecting arm passes through the rectangular opening;

[0028] The guide rails are located on both sides of the rectangular opening.

[0029] Furthermore, the cylinder drives the guide rod to make a reciprocating motion to drive the hinge to open and close;

[0030] The cylinder is retracted, driving the hinge to close through the guide rod, and the connecting arm connected to the hinge drives the positioning mechanism to retract toward the middle;

[0031] The cylinder extends, drives the hinge to open through the guide rod, and through the limiting effect of the guide rod limit block, the three hinge points of the hinge are in a straight line to reach the dead point position, and the positioning mechanism expands to both sides to the working position.

[0032] The utility model has a simple structure, fast installation and adjustment, and low cost, and ensures the accuracy of the dead point position of the dead point mechanism and the stability of the mechanism, and has good practicality when loading and unloading workpieces.

[0033] Other features and advantages of the present invention will be set forth in the following description, and in part will become apparent from the description, or may be understood by practicing the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0035] Figure 1 It is a schematic diagram of the first three-dimensional structure of the guide dead point mechanism according to the utility model;

[0036] Figure 2 It is a schematic diagram of the second three-dimensional structure of the belt-guided dead point mechanism according to the utility model;

[0037] Figure 3 It is a front view of the guided dead point mechanism according to the utility model;

[0038] Figure 4 It is a bottom view of the guided dead point mechanism according to the utility model;

[0039] Figure 5 It is a left view of the guide dead point mechanism according to the utility model;

[0040] Figure 6 It is a schematic diagram of the guide rod structure according to the utility model;

[0041] Figure 7 is a schematic diagram of a first hinge structure according to the utility model;

[0042] Figure 8 It is a schematic diagram of the second hinge structure according to the utility model.

[0043] In the figure, 1. mounting plate, 2. guide sleeve mounting seat, 3. guide rod, 4. first hinge, 5. second hinge, 6. movable joint, 7. impact block, 8. limit block mounting seat, 9. guide rod limit block, 10. first connecting arm, 11. first positioning mechanism, 12. second positioning mechanism, 13. adjustment gasket, 14. guide rail, 15. cylinder, 16. bushing, 17. second connecting arm. DETAILED DESCRIPTION

[0044] The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0045] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0046] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more". "Plurality" should be understood as two or more.

[0047] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0048] Figure 1 It is a schematic diagram of the first three-dimensional structure of the guide dead point mechanism according to the utility model. Figure 2 It is a schematic diagram of the second three-dimensional structure of the guide dead point mechanism according to the utility model. Figure 3 This is a front view of the guided dead point mechanism according to the utility model. Figure 4 This is a bottom view of the guided dead point mechanism according to the utility model. Figure 5 FIG. 2 is a left view of the guide dead point mechanism according to the utility model, as shown in FIG. Figure 1-5As shown, the utility model of the utility model with a guided dead point mechanism includes a mounting plate 1, a guide sleeve mounting seat 2, a guide rod 3, a first hinge 4, a second hinge 5, a movable joint 6, a collision block 7, a limit block mounting seat 8, a guide rod limit block 9, a first connecting arm 10, a first positioning mechanism 11, a second positioning mechanism 12, an adjustment gasket 13, a guide rail 14, a cylinder 15, a guide sleeve 16, and a second connecting arm 17, wherein,

[0049] The limit block mounting seat 8, the guide sleeve mounting seat 2 and the cylinder 15 are sequentially mounted on the lower plane of the mounting plate 1.

[0050] In the embodiment of the utility model, the limit block mounting seat 8, the guide sleeve mounting seat 2 and the cylinder 15 are fixedly mounted on the lower plane of the mounting plate 1.

[0051] Preferably, the limit block mounting seat 8, the guide sleeve mounting seat 2 and the cylinder 15 are fixedly mounted on the lower plane of the mounting plate 1 by means of screws or welding.

[0052] The guide sleeve 16 is embedded in the guide sleeve mounting seat 2;

[0053] The guide rod 3 passes through the guide sleeve mounting seat 2 through the guide sleeve 16, one end of which is connected to the cylinder 15, and the other end is connected to the collision block 7. The structure of the guide rod 3 is as follows Figure 6 shown.

[0054] In the embodiment of the utility model, the guide sleeve 16 adopts an oil-free bushing, which ensures that the guide rod 3 is stable and makes its movement smoother.

[0055] Preferably, one end of the guide rod 3 is connected to the cylinder 15 via a flexible joint 6;

[0056] Preferably, the collision block 7 is fixedly mounted on the other end of the guide rod 3 .

[0057] The guide rod 3 passes through the guide sleeve 16 as a whole to make axial movement.

[0058] The guide rod limit block 9 and the adjustment gasket 13 are installed on the limit block mounting seat 8.

[0059] Preferably, the guide rod limit block 9 and the adjustment gasket 13 are locked on the limit block mounting seat 8 by screws.

[0060] The guide rod limit block 9 is arranged opposite to the collision block 7. By adjusting the position of the guide rod limit block 9 by adjusting the gasket 13, it can be ensured that the cylinder 15 pushes the guide rod 3 to the same position every time, ensuring the accuracy of the dead point.

[0061] The guide rail 14 is installed on the upper plane of the mounting plate 1.

[0062] The first positioning mechanism 11 and the second positioning mechanism 12 are respectively mounted on the sliders of the guide rail 14 .

[0063] One end of the first hinge 4 and one end of the second hinge 5 are hinged to the guide rod 3 .

[0064] The other end of the first hinge 4 is hinged to one end of the first connecting arm 10 .

[0065] The other end of the second hinge 5 is hinged to one end of the second connecting arm 17 .

[0066] The other end of the first connecting arm 10 is connected to the first positioning mechanism 11 .

[0067] The other end of the second connecting arm 17 is connected to the second positioning mechanism 12 .

[0068] The structure of the first hinge 4 is as follows Figure 7 As shown, the structure of the second hinge 5 is as follows Figure 8 shown.

[0069] Preferably, the first connecting arm 10 and the second connecting arm 17 of the present invention are respectively fixedly connected to the first positioning mechanism 11 and the second positioning mechanism 12 by screws, so as to drive the first positioning mechanism 11 and the second positioning mechanism 12 to move on the guide rail 14 .

[0070] The mounting plate 1 of the present invention has a rectangular opening (not shown in the figure) in the middle thereof for the first connecting arm 10 and the second connecting arm 17 to pass through, and the guide rails 14 are located on both sides of the rectangular opening.

[0071] The guide dead point mechanism of the utility model controls the opening and closing of the other end of the first hinge 4 and the other end of the second hinge 5 by driving the guide rod 3 to make reciprocating motion through the cylinder 15 .

[0072] When the cylinder 15 is retracted, the guide rod 3 drives the other end of the first hinge 4 and the other end of the second hinge 5 to close, and drives the first positioning mechanism 11 and the second positioning mechanism 12 to retract toward the middle through the first connecting arm 10 and the second connecting arm 17;

[0073] When the cylinder 15 is extended, the guide rod 3 drives the other end of the first hinge 4 and the other end of the second hinge 5 to open. Through the limiting action of the guide rod limit block 9, the other end of the first hinge 4, the other end of the second hinge 5 and one end of the hinge with the guide rod 3 are three hinge points in a straight line, reaching the dead point position. At this time, the first positioning mechanism 11 and the second positioning mechanism 12 expand to the working position on both sides. When the outside world applies external force to the positioning blocks of the first positioning mechanism 11 and the second positioning mechanism 12, the positioning blocks of the first positioning mechanism 11 and the second positioning mechanism 12 will not be displaced.

[0074] Those skilled in the art can understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. 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

1. A belt-guided dead point mechanism, characterized in that: It includes a mounting plate, a guide sleeve mounting seat, a guide rod, a hinge, a bumper, a limit block mounting seat, a guide rod limit block, a connecting arm, a positioning mechanism, an adjustment gasket, a guide rail, a cylinder, and a guide sleeve, wherein: The limit block mounting seat, the guide sleeve mounting seat and the cylinder are sequentially mounted on the lower plane of the mounting plate; The guide rail is installed on the upper plane of the mounting plate; The guide sleeve is arranged in the guide sleeve mounting seat; The guide rod passes through the guide sleeve, one end of which is connected to the cylinder, and the other end of which is connected to the collision block; The guide rod limit block and the adjustment gasket are installed on the limit block mounting seat; The positioning mechanism is connected to the hinge via the connecting arm; The hinge is hinged to the guide rod; The positioning mechanism is mounted on a slider of the guide rail.

2. The belt guide dead point mechanism according to claim 1, characterized in that: The positioning mechanism includes a first positioning mechanism and a second positioning mechanism; the connecting arm includes a first connecting arm and a second connecting arm; The first positioning mechanism is connected to one end of the first connecting arm; The second positioning mechanism is connected to one end of the second connecting arm.

3. The belt guide dead point mechanism according to claim 2, characterized in that: The hinge comprises a first hinge and a second hinge; One end of the first hinge is connected to the other end of the first connecting arm; One end of the second hinge is connected to the other end of the second connecting arm.

4. The belt guide dead point mechanism according to claim 3, characterized in that: The other end of the first hinge and the other end of the second hinge are hinged to the guide rod.

5. The belt guide dead point mechanism according to claim 1, characterized in that: The guide sleeve is an oil-free bushing.

6. The belt guide dead point mechanism according to claim 1, characterized in that: The limit block mounting seat, the guide sleeve mounting seat and the cylinder are respectively mounted on the lower plane of the mounting plate by means of screws or welding.

7. The belt guide dead point mechanism according to claim 1, characterized in that: One end of the guide rod is connected to the cylinder through a flexible joint.

8. The belt guide dead point mechanism according to claim 1, characterized in that: The guide rod limiting block and the adjusting gasket are mounted on the limiting block mounting seat by means of screws.

9. The belt guide dead point mechanism according to claim 1, characterized in that: The mounting plate has a rectangular opening in the middle; The connecting arm passes through the rectangular opening; The guide rails are located on both sides of the rectangular opening.

10. The belt guide dead point mechanism according to claim 1, characterized in that: The cylinder drives the guide rod to make reciprocating motion to drive the hinge to open and close; The cylinder is retracted, driving the hinge to close through the guide rod, and the connecting arm connected to the hinge drives the positioning mechanism to retract toward the middle; The cylinder extends, drives the hinge to open through the guide rod, and through the limiting effect of the guide rod limit block, the three hinge points of the hinge are in a straight line to reach the dead point position, and the positioning mechanism expands to both sides to the working position.

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