CN212399301U

CN212399301U - Pressing mechanism

Info

Publication number: CN212399301U
Application number: CN202020545718.XU
Authority: CN
Inventors: 袁铭宝; 黄小强; 张轲; 陈栋; 谢军
Original assignee: Luxshare Intelligent Manufacture Zhejiang Co Ltd
Current assignee: Luxshare Intelligent Manufacture Zhejiang Co Ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2021-01-26
Anticipated expiration: 2030-04-14

Abstract

The embodiment of the utility model provides a pressing mechanism through adopting the drive assembly including the orbit board, sends the pressure head with the power transmission along first coordinate axis that elevating system provided, makes the pressure head remove along the orbit that the orbit board was injectd. After the pressing head presses the workpiece at the first position, the pressing head can move to a second position obliquely above the first position along a preset track. Therefore, the pressing head can be located at a better position, the workpiece defect caused by unreasonable pressing head position is avoided, and the qualified rate of the workpiece can be improved.

Description

Pressing mechanism

Technical Field

The utility model relates to a machine-building technical field especially relates to a pressing mechanism.

Background

In the mechanical manufacturing process, a pressing mechanism is adopted to fix two workpieces to be processed to enable the workpieces to occupy correct positions, so that the workpieces are processed or detected at preset positions.

However, the pressing mechanism is still to be perfected.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a pressing mechanism to perfect pressing mechanism.

The embodiment of the utility model provides a pressing mechanism includes:

the pressing head presses the workpiece at a first position;

a base;

the lifting mechanism is perpendicular to the base, is fixedly connected with the base and lifts along a first coordinate axis direction;

the transmission assembly is driven by the lifting mechanism to drive the pressure head to move between a first position and a second position along a preset track;

the second position is obliquely above the first position, and the predetermined track is an arc or a straight line between the first position and the second position;

the transmission assembly includes:

a track plate having track holes for defining the predetermined track.

Preferably, the transmission assembly further comprises:

the lifting plate is parallel to the track plate and moves along a first coordinate axis under the driving of the lifting mechanism; the lifting plate is provided with a first limiting hole along a second coordinate axis, and the first limiting hole and the track hole are provided with a cross area; moving the intersection area of the track hole and the first limiting hole along the track hole along with the movement of the lifting plate along a first coordinate axis;

the rolling shaft penetrates through the intersection area of the track hole and the first limiting hole and moves along the track hole under the driving of the lifting plate;

the pressure head is directly or indirectly connected with the rolling shaft and moves along with the rolling shaft.

Preferably, the stitching mechanism further comprises:

the limiting plate is perpendicular to the base along a third coordinate axis and is fixedly connected with the base, and the limiting plate comprises a second limiting hole for accommodating the pressure head to penetrate through so that the coordinate of the pressure head in the third coordinate axis direction is fixed.

Preferably, the pressure head comprises a pressing part and a connecting part, the width of the connecting part is basically the same as that of the second limiting hole, the length of the connecting part is larger than the thickness of the limiting plate, and the connecting part penetrates through the second limiting hole and is directly or indirectly connected with the roller.

Preferably, the limiting plate is perpendicular to the track plate and is fixedly connected with the track plate.

Preferably, the transmission assembly further comprises:

the first sliding rail structure comprises a first sliding rail along a first direction and a first sliding block matched with the first sliding rail; the first sliding rail is fixedly connected with the track board;

the second slide rail structure comprises a second slide rail along a second direction and a second slide block matched with the second slide rail; the second sliding rail is fixedly connected with the first sliding block, and moves along a first direction along with the first sliding block;

the rolling shaft is fixedly connected with the second sliding block;

the connecting part of the pressure head is indirectly connected to the rolling shaft through a second sliding block.

Preferably, the track board is perpendicular to the base and fixedly connected with the base.

Preferably, the track plate and the lifting plate are connected through a third slide rail.

Preferably, the stitching mechanism further comprises:

a first elastic member applying a damping force to the lifting plate in a direction opposite to a moving direction of the lifting plate in response to the lifting plate moving to a first height;

and a second elastic member applying a buffering force to the lifting plate opposite to the movement direction of the lifting plate in response to the lifting plate moving to a second height.

Preferably, the lifting mechanism is a cylinder;

the cylinder comprises a piston rod which ascends and descends along the direction of the first coordinate axis, and the piston rod is directly or indirectly fixedly connected with the lifting plate.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view of a workpiece according to an embodiment of the invention;

fig. 2 is a three-dimensional schematic view of a pressing mechanism according to an embodiment of the present invention;

fig. 3 is a three-dimensional schematic view of a pressing mechanism according to an embodiment of the present invention;

fig. 4 is a schematic view of a transmission assembly of the pressing mechanism according to the embodiment of the present invention;

fig. 5 is a schematic view of a transmission assembly of the pressing mechanism according to the embodiment of the present invention;

fig. 6 is a schematic view of the first slide rail structure, the second slide rail structure, the roller and the ram of the present invention;

fig. 7 is a schematic diagram of a track plate, rollers and indenter according to an embodiment of the present invention.

Description of reference numerals:

01 workpiece

01a parts

01b parts

a middle solder point

b two side welding spots

x third coordinate axis

y second coordinate axis

z first coordinate axis

10 indenter

11 pressing part

12 connecting part

20 base

30 lifting mechanism

31 piston rod

32 first connecting block

33 cylinder joint

40 drive assembly

41 track board

411 track hole

42 lifting plate

421 first limit hole

43 roller

44 first slide rail structure

441 first slide rail

442 first slide block

45 second slide rail structure

451 second slide rail

452 second slide

46 third slide rail

47 second connecting block

50 limiting plate

51 second limiting hole

60 first elastic member

70 second elastic member

Detailed Description

The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth in detail. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. Well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present invention.

Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

Unless the context clearly requires otherwise, throughout the description, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".

In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

For the pressing mechanism used for the parts subjected to laser welding, the pressing mechanism is required not to shield the welding part while the pressing mechanism plays a role in supporting and fixing, so that the phenomenon of light blocking is avoided, and the welding effect is not affected.

Fig. 1 is a schematic view of a workpiece according to an embodiment of the present invention. The workpiece 01 includes a part 01a and a part 01b, and the part 01a and the part 01b are fixedly connected by welding. In the welding process, firstly, the pressure head 10 is required to press the position of the middle welding point a to relatively fix the two workpieces 01, and welding points b on two sides are welded to connect the two workpieces 01 through welding. After the welding is completed, the ram 10 needs to be removed to weld the intermediate weld point a. If the ram 10 is moved up, the ram 10 is positioned above the center pad a, which can cause light blocking or other interference with other operational structures. If the indenter 10 is moved away in the horizontal direction, the indenter 10 may scratch the workpiece 01.

In view of the above, the present application provides a pressing mechanism for workpieces to ensure the performance of welding the workpieces.

Fig. 2 and 3 are three-dimensional schematic diagrams of the pressing mechanism according to the embodiment of the present invention. As shown in fig. 2 and 3, the pressing mechanism of the present application includes: the lifting device comprises a pressure head 10, a base 20, a lifting mechanism 30, a transmission assembly 40, a limiting plate 50, a first elastic component 60 and a second elastic component 70.

The ram 10 is pressing the workpiece 01 in the first position. Wherein, the pressure head 10 is directly or indirectly connected with the roller 43 and moves along with the roller 43. Wherein, work piece 01 can pass through anchor clamps, and structures such as robotic arm and robot are fixed in the primary importance, in order to show better the utility model discloses, the structure of centre gripping work piece 01 is not shown in the figure.

The pressure head 10 comprises a pressing part 11 and a connecting part 12, the width of the connecting part 12 is basically the same as that of the second limiting hole 51, the length of the connecting part is larger than the thickness of the limiting plate 50, and the connecting part 12 penetrates through the second limiting hole 51 and is directly or indirectly connected with the roller 43.

The base 20 is horizontally disposed to support and fix the elevating mechanism 30 and the position limiting plate 50.

The lifting mechanism 30 is perpendicular to the base 20 and is fixedly connected with the base 20, and the lifting mechanism lifts along the direction of the first coordinate axis z.

The lifting mechanism 30 is a cylinder. In an alternative implementation manner, the lifting mechanism 30 is a thin cylinder, and since the thin cylinder occupies a small space, the structure is light, and the size of the pressing mechanism can be reduced. Meanwhile, the thin cylinder is low in price and simple and convenient to install, and the cost of the pressing mechanism can be reduced.

The cylinder comprises a piston rod 31 which can be lifted along the direction of the first coordinate axis z, and the piston rod 31 and the lifting plate 42 are directly or indirectly fixedly connected. The piston rod 31 is raised and lowered in the direction along the first coordinate axis z. In an alternative implementation, as shown in fig. 2, the piston rod 31 is fixedly connected to the lifting plate 42 through the cylinder joint 33 and the first connecting block 32.

The driving assembly 40 is driven by the lifting mechanism 30 to drive the pressing head 10 to move between a first position and a second position along a predetermined track. Wherein, the first position is the position where the pressing workpiece 01 is located. The second position is obliquely above the first position, and the predetermined trajectory is an arc or a straight line between the first position and the second position.

Fig. 4-5 are schematic views of a transmission assembly 40 of a stitching mechanism according to an embodiment of the present invention. As shown in fig. 3 to 5, the driving assembly 40 includes a track plate 41, a lifting plate 42, a roller 43, a first rail structure 44, a second rail structure 45, a third rail 46 and a second connecting block 47.

As shown in fig. 3, the track plate 41 and the lifting plate 42 are parallel to a plane defined by the first coordinate axis z and the third coordinate axis x.

The track board 41 has a track hole 411 for defining the predetermined track. The track board 41 is perpendicular to the base 20 and is fixedly connected with the base 20. The track hole 411 may be a circular arc hole as shown in fig. 5, or may be an inclined kidney-shaped hole.

The lifting plate 42 is parallel to the track plate 41 and moves along the first coordinate axis z under the driving of the lifting mechanism 30. The lifting plate 42 has a first position-limiting hole 421 along a second coordinate axis y, and the first position-limiting hole 421 and the track hole 411 have a cross area. As the lifting plate 42 moves along the first coordinate axis z, the intersection area of the track hole 411 and the first limiting hole 421 moves along the track hole 411.

The lifting plate 42 is fixedly connected with the piston rod 31 of the lifting mechanism 30. The elevation plate 42 moves upward as the piston rod 31 rises.

The track plate 41 and the lifting plate 42 are connected by a third slide rail 46. The third slide rail 46 is provided along the direction of the first coordinate axis z, and the elevation plate 42 moves in the direction of the first coordinate axis z.

The roller 43 passes through the crossing area of the track hole 411 and the first limiting hole 421, and is driven by the lifting plate 42 to move along the track hole 411.

Fig. 6 is a schematic view of the first slide rail structure, the second slide rail structure, the roller and the pressing head of the present invention. As shown in fig. 3, 5 and 6, the first slide rail structure 44 includes a first slide rail 441 along the first direction and a first slider 442 engaged with the first slide rail 441. In an alternative implementation, the first direction may be a direction along the first coordinate axis z. The first slide rail 441 is fixedly connected to the track board 41.

And the second slide rail structure 45 comprises a second slide rail 451 along the second direction and a second slide block 452 matched with the second slide rail 451. In an alternative implementation, the second direction may be a direction along the third coordinate axis x. The second slide rail 451 is fixedly connected to the first slide block 442, and the second slide rail 451 moves along with the first slide block 442 in a first direction.

The roller 43 is fixedly connected to the second slider 452. In an alternative implementation, one end of the roller 43 is fixedly connected to the second slider 452 by a second connecting block 47.

The connecting portion of the ram 10 is indirectly connected to the roller 43 through a second slider. The ram 10 is connected to the second slider 452, which facilitates replacement of the ram 10.

The first slide rail structure 44 and the second slide rail structure 45 can play supporting and limiting roles, the pressure head 10 is prevented from being directly connected to the rolling shaft 43 to cause shaking of the pressure head 10, and the position accuracy of the pressure head 10 can be ensured.

Fig. 7 is a schematic diagram of a track plate, rollers and indenter according to an embodiment of the present invention. When the position of the roller 43 with respect to the track hole 411 is as shown in fig. 7, the ram 10 is obliquely above the workpiece 01. The pressing head 10 moves along the track defined by the track hole 411 along with the roller 43, and when the pressing head 10 presses the workpiece 01 at the position where the workpiece 01 is located, the roller 43 is located at the lower end position of the track hole 411. After the welding of the workpiece 01 is finished, the ram 10 is returned to the position shown in fig. 7 along the trajectory defined by the trajectory hole 411 with the roller 43.

The limiting plate 50 is perpendicular to the base 20 along a third coordinate axis x and is fixedly connected to the base 20, and the limiting plate 50 includes a second limiting hole 51 for accommodating the indenter 10 to pass through, so that the coordinate of the indenter 10 in the third coordinate axis x direction is fixed. In an alternative implementation, the dimension of the second limiting hole 51 in the direction of the second coordinate axis y is substantially the same as the dimension of the connecting portion of the indenter 10 in the direction of the second coordinate axis y.

The limiting plate 50 is perpendicular to the track plate 41 and is fixedly connected with the track plate. As shown in fig. 2, the track plate 41 is disposed along the third axis x, and the limit plate 50 is disposed along the second axis y.

A first elastic member 60 applying a damping force to the lifting plate 42 in a direction opposite to the movement direction of the lifting plate 42 in response to the lifting plate 42 moving to the first height.

A second elastic member 70 applying a damping force to the lifting plate 42 in a direction opposite to the movement direction of the lifting plate 42 in response to the lifting plate 42 moving to the second height.

In an alternative implementation, the first elastic member 60 and the second elastic member 70 may be dampers or damper springs. By providing the first elastic member 60 and the second elastic member 70, the lifting plate 42 can be moved within a certain range, and the workpiece 01 can be prevented from being crushed. Therefore, the lifting plate 42 can be moved at a faster speed without causing damage to the workpiece 01. The efficiency of pressing mechanism can be improved.

The embodiment of the utility model provides a pressing mechanism, through adopting transmission assembly 40 including orbit board 41, send the pressure head to along the power of first coordinate axis z that elevating system 30 provided, make the pressure head remove along the orbit that orbit board 41 was injectd. So that the pressing head 10 can move to a second position obliquely above the first position along a predetermined track after pressing the workpiece at the first position. Therefore, the pressing head 10 can be located at a better position, the defect of the workpiece caused by unreasonable position of the pressing head 10 is avoided, and the qualified rate of the workpiece is improved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A press fit mechanism, comprising:

a pressing head (10) for pressing the workpiece (01) at a first position;

a base (20);

the lifting mechanism (30) is perpendicular to the base (20) and fixedly connected with the base (20), and lifts along a first coordinate axis (z);

the transmission assembly (40) is driven by the lifting mechanism (30) to drive the pressure head (10) to move between a first position and a second position along a preset track;

the transmission assembly (40) comprises:

a track plate (41), the track plate (41) having a track hole (411) for defining the predetermined track.

2. The laminating mechanism according to claim 1, wherein the drive assembly (40) further comprises:

the lifting plate (42) is parallel to the track plate (41) and moves along a first coordinate axis (z) under the driving of the lifting mechanism (30); the lifting plate (42) is provided with a first limiting hole (421) along a second coordinate axis (y), and the first limiting hole (421) and the track hole (411) are provided with crossed areas; along with the movement of the lifting plate (42) along a first coordinate axis (z), the crossed area of the track hole (411) and the first limit hole (421) moves along the track hole (411);

the roller (43) penetrates through the intersection area of the track hole (411) and the first limiting hole (421), and moves along the track hole (411) under the driving of the lifting plate (42);

wherein, the pressure head (10) is directly or indirectly connected with the roller (43) and moves along with the roller (43).

3. The laminating mechanism of claim 2, further comprising:

and the limiting plate (50) is perpendicular to the base (20) along a third coordinate axis (x) and is fixedly connected with the base (20), and the limiting plate (50) comprises a second limiting hole (51) for accommodating the pressure head (10) to pass through so that the coordinate of the pressure head (10) in the third coordinate axis (x) direction is fixed.

4. A stitching mechanism according to claim 3, wherein the pressing head (10) comprises a pressing portion (11) and a connecting portion (12), the width of the connecting portion is substantially the same as the width of the second limiting hole (51), the length of the connecting portion is greater than the thickness of the limiting plate (50), and the connecting portion passes through the second limiting hole (51) and is directly or indirectly connected to the roller (43).

5. A stitching mechanism according to claim 3, wherein the stop plate (50) and the track plate (41) are perpendicular and fixedly connected.

6. A stitching mechanism according to claim 5, wherein the drive assembly (40) further comprises:

a first slide rail structure (44) comprising a first slide rail in a first direction and a first slider (442) cooperating with the first slide rail; the first sliding rail is fixedly connected with the track plate (41);

the second sliding rail structure (45) comprises a second sliding rail (451) along the second direction and a second sliding block (452) matched with the second sliding rail (451); the second sliding rail (451) is fixedly connected with the first sliding block (442), and the second sliding rail (451) moves along with the first sliding block (442) along a first direction;

the rolling shaft (43) is fixedly connected with the second sliding block (452);

the connecting part of the pressure head (10) is indirectly connected to the roller (43) through a second slide block (452).

7. A stitching mechanism according to claim 1, characterized in that the track plate (41) is fixedly connected to the base (20) perpendicular to the base (20).

8. A stitching mechanism according to claim 2, wherein the track plate (41) and the lifting plate (42) are connected by a third slide rail (46).

9. The laminating mechanism of claim 2, further comprising:

a first elastic member (60) for applying a damping force to the lifting plate (42) in a direction opposite to a moving direction of the lifting plate (42) in response to the lifting plate (42) moving to a first height;

a second elastic member (70) applying a damping force to the lift plate (42) in a direction opposite to a moving direction of the lift plate (42) in response to the lift plate (42) moving to a second height.

10. A stitching mechanism according to claim 2, wherein the lifting mechanism (30) is a pneumatic cylinder;

the cylinder comprises a piston rod (31) which can ascend and descend along a first coordinate axis (z), and the piston rod (31) is directly or indirectly fixedly connected with the ascending and descending plate (42).