Lever type pressing positioning mechanism

Abstract

The utility model discloses a lever type pressing positioning mechanism which comprises a positioning table and a transverse lever, a lifting mechanism is arranged on one side of the positioning table, and the transverse lever is movably installed on a lever support. The two ends of the transverse lever are located above the positioning table and the lifting mechanism correspondingly, and a pressing plate is arranged at the end, opposite to the positioning table, of the transverse lever. When the lifting mechanism ascends, one end of the transverse lever is jacked, so that the pressing plate at the other end of the transverse lever presses the positioning table; the lever support comprises a fixed seat, a movable connecting rod is arranged on the fixed seat, the lower end of the movable connecting rod is hinged to the fixed seat, and the upper end of the movable connecting rod is hinged to the middle of the transverse lever in a matched mode. The pressing plate is fixedly connected to one end of the transverse lever, the lower plate surface of the pressing plate is opposite to the positioning table, and a slot is formed in the lower plate surface of the pressing plate; and when the pressing plate presses the positioning table, the open seam can be stressed and deformed. When the lower plate surface of the pressing plate is not parallel to the upper surface of the to-be-welded part, the pressing plate and the to-be-welded part can be contacted more fully.

Description

Technical Field

[0001] The utility model relates to a pressing mechanism, in particular to a lever-type pressing positioning mechanism. Background Art

[0002] There are many plate parts in the frame of an electric vehicle. These plate parts need to be welded before being assembled to the frame. When welding the plate parts, they need to be pressed and fixed on the corresponding welding tool. In common welding tools, most of the pressing mechanisms are directly above the parts to be pressed, so the overall height of the welding tool is relatively high and the space occupied is large, which is not conducive to the storage and transportation of the welding tool. In addition, the pressing mechanism includes a pressing plate. When the pressing plate is pressed on the part to be welded, since it cannot be guaranteed that the lower plate surface of the pressing plate is completely parallel to the upper surface of the part to be welded, the contact position between the pressing plate and the part to be welded may be only a line. For this reason, improvements are proposed to the existing pressing mechanism. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a lever-type downward pressing positioning mechanism, which can make the contact between the pressing plate and the workpiece to be welded more complete when the lower plate surface of the pressing plate is not parallel to the upper surface of the workpiece to be welded.

[0004] The lifting mechanism is a pair of locking plate, and the locking plate is connected with the locking plate to the locking plate, and the locking plate is locked. When the locking plate is locked, the locking plate is locked. The locking plate is locked and the locking plate is locked.

[0005] Furthermore, the lifting mechanism includes a vertical telescopic rod, the top end of the telescopic rod is hingedly connected to one end of the transverse lever.

[0006] Furthermore, the lever support includes a fixed seat, a movable connecting rod is provided on the fixed seat, the lower end of the movable connecting rod is hingedly mounted on the fixed seat, and the upper end of the movable connecting rod is hingedly matched with the middle part of the transverse lever.

[0007] Beneficial effects: The lever-type downward-pressing positioning mechanism of the utility model has the following beneficial effects:

[0008] 1) By introducing a lateral lever, the lifting mechanism can be located on the side of the positioning platform rather than above it, thereby reducing the overall height of the pressing mechanism;

[0009] 2) The horizontal lever presses the workpiece to be welded on the positioning table through the pressure plate. The lower plate surface of the pressure plate is provided with a slit, which can be deformed so that the plate surfaces on both sides of the slit can contact the workpiece to be welded, thereby making the contact between the pressure plate and the workpiece to be welded more complete. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Attachment Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0011] Attachment Figure 2 Schematic diagram of the slit on the lower surface of the pressure plate. DETAILED DESCRIPTION

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] As attached Figures 1 to 2 The lever-type downward-pressing positioning mechanism comprises a base plate 10, a positioning platform 1 and a transverse lever 2 mounted thereon. A lifting mechanism 3 is mounted on one side of the positioning platform 1, and the transverse lever 2 is movably mounted on a lever support 4. The ends of the transverse lever 2 are positioned above the positioning platform 1 and the lifting mechanism 3, respectively. A pressure plate 5 is provided on the end of the transverse lever 2 opposite the positioning platform 1. When the lifting mechanism 3 rises, it pushes against one end of the transverse lever 2, causing the pressure plate 5 at the other end of the transverse lever 2 to press against the positioning platform 1, thereby compressing the workpiece 12 to be welded, which is placed on the positioning platform 1.

[0014] In the present invention, due to the introduction of the transverse lever 2, the lifting mechanism 3 can be set on one side of the positioning platform 1 instead of directly above the positioning platform 1. Therefore, the height of the lifting mechanism 3 is lower, thereby reducing the height of the entire mechanism, occupying less space, and facilitating transportation and storage.

[0015] The lifting mechanism 3 includes a vertical telescopic rod 6, the top end of which is hingedly connected to one end of the horizontal lever 2. In one embodiment, the lifting mechanism 3 is a cylinder 11 fixedly mounted on the base plate 10, and the telescopic rod 6 corresponds to the output rod of the cylinder 11.

[0016] The lever support 4 includes a fixed seat 7, see attached Figure 2In one embodiment, a fixed base 7 is fixedly mounted on a cylinder 11. A movable link 8 is mounted on the fixed base 7, the lower end of which is hingedly mounted on the fixed base 7, and the upper end of which is hingedly engaged with the middle portion of the transverse lever 2. Due to the presence of the movable link 8, the top end of the telescopic rod 6 remains hingedly connected to one end of the transverse lever 2 during the telescopic rod 6's extension and retraction process.

[0017] The pressing plate 5 is fixedly connected to one end of the transverse lever 2. The lower surface of the pressing plate 5 is opposite to the positioning platform 1, and the lower surface of the pressing plate 5 has a slit 9. When the pressing plate 5 is pressed against the positioning platform 1, the slit 9 can be deformed by force. When a workpiece 12 to be welded is placed on the positioning platform 1, if there is no slit 9, then when the pressing plate 5 is pressed on the workpiece 12, since it cannot be guaranteed that the lower surface of the pressing plate 5 is completely parallel to the upper surface of the workpiece 12 to be welded, the contact position between the pressing plate 5 and the workpiece 12 to be welded may be only a line. In the present invention, due to the addition of the slit 9, even if the lower surface of the pressing plate 5 is not parallel to the upper surface of the workpiece 12 to be welded, after the slit 9 undergoes adaptive deformation, the plate surfaces on both sides of the slit 9 will have at least a line in contact with the workpiece 12 to be welded, thereby allowing the pressing plate 5 to more fully contact the workpiece 12 to be welded, thereby reducing the pressure and allowing the pressing plate 5 to more stably press the workpiece 12 to be welded.

[0018] As attached Figure 2 As shown in , specifically, the slit 9 is a strip-shaped slit, and both ends of the slit 9 extend to the edge of the pressing plate 5. A sufficiently long strip-shaped slit can make the pressing plate 5 easier to deform. When the pressing plate 5 is a rectangular plate, the slit 9 extends along the length direction of the pressing plate 5, and multiple slits 9 can be provided on the lower surface of the pressing plate 5.

[0019] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A lever-type downward-pressing positioning mechanism, characterized in that: The invention comprises a positioning platform (1) and a transverse lever (2), wherein a lifting mechanism (3) is provided on one side of the positioning platform (1), and the transverse lever (2) is movably mounted on a lever support (4); the two ends of the transverse lever (2) are respectively located above the positioning platform (1) and the lifting mechanism (3), and a pressure plate (5) is provided on the end of the transverse lever (2) opposite to the positioning platform (1); when the lifting mechanism (3) rises, it pushes one end of the transverse lever (2), so that the pressure plate (5) at the other end of the transverse lever (2) is pressed toward the positioning platform (1); The pressing plate (5) is fixedly connected to one end of the transverse lever (2), the lower plate surface of the pressing plate (5) is opposite to the positioning platform (1), and the lower plate surface of the pressing plate (5) is provided with a plurality of slits (9); when the pressing plate (5) is pressed toward the positioning platform (1), the slits (9) can be deformed by force; The slit (9) is a strip-shaped slit, and both ends of the slit (9) extend to the edge of the pressing plate (5); the pressing plate (5) is a rectangular plate body, and the slit (9) extends along the length direction of the pressing plate (5); when a part to be welded (12) is placed on the positioning platform (1), and the lower plate surface of the pressing plate (5) is not parallel to the upper surface of the part to be welded (12), after the slit (9) undergoes adaptive deformation, at least one line of the plate surface on both sides of the slit (9) contacts the part to be welded (12), which can reduce the pressure.

2. The lever-type downward-pressing positioning mechanism according to claim 1, characterized in that: The lifting mechanism (3) comprises a vertical telescopic rod (6), the top end of the telescopic rod (6) being hingedly connected to one end of the transverse lever (2).

3. The lever-type downward-pressing positioning mechanism according to claim 1, characterized in that: The lever support (4) includes a fixed seat (7), a movable connecting rod (8) is provided on the fixed seat (7), the lower end of the movable connecting rod (8) is hingedly mounted on the fixed seat (7), and the upper end of the movable connecting rod (8) is hingedly matched with the middle part of the transverse lever (2).

Images