CN111283072A

CN111283072A - Radial expanding mechanism and assembling jig

Info

Publication number: CN111283072A
Application number: CN202010136845.9A
Authority: CN
Inventors: 孙晓林; 刘栋洋; 景荣强; 周静; 张良
Original assignee: Luxshare Electronic Technology Kunshan Ltd
Current assignee: Luxshare Electronic Technology Kunshan Ltd
Priority date: 2020-03-02
Filing date: 2020-03-02
Publication date: 2020-06-16

Abstract

The embodiment of the invention discloses a radial expansion mechanism and an assembling jig, wherein a push block (3) is fixedly connected with a base (1) and is provided with at least one first inclined surface (31), at least two sliding blocks (4) are arranged on the outer side of the push block (3), a pressure plate (6) is arranged above the sliding blocks (4) and is fixedly connected with an objective table (2), when the objective table (2) moves, the pressure plate (6) moves along with the sliding blocks to push the sliding blocks (4) to move along the first inclined surfaces (31) of the push block (3), so that the distance between the sliding blocks (4) and the center of the push block (3) is changed, the outer contours of the sliding blocks (4) are expanded in the radial direction, and workpieces arranged on the outer side of the sliding blocks (4) are driven to move. Therefore, according to the technical scheme of the embodiment of the invention, a plurality of radial external forces can be simultaneously applied to the workpiece on the outer side of the sliding block (4), so that the assembly and pressure maintaining of the product are facilitated.

Description

Radial expanding mechanism and assembling jig

Technical Field

The invention relates to the field of machinery, in particular to a radial expansion mechanism and an assembling jig.

Background

In the production process of products, the parts are often required to be expanded or assembled and pressure-maintained. The traditional assembling and pressure maintaining device usually adopts a one-way or opposite movement mode, when the device is applied to a part with an arc surface, the part is easy to shift, the tolerance in each direction is difficult to control, the assembly is easy to be not in place, and the assembly requirement can not be met.

Disclosure of Invention

In view of this, embodiments of the present invention provide a radial expanding mechanism and an assembling jig, which can move a workpiece in a radial direction, and facilitate assembly and pressure maintaining of a product.

In a first aspect, an embodiment of the present invention provides a radial expansion mechanism, including:

a base;

the object stage is movably connected with the upper end face of the base;

the pushing block is fixedly connected with the base and is provided with at least one first inclined plane;

the at least two sliding blocks are arranged on the outer side of the push block;

a reset device connected with the slider, the reset device configured to maintain the slider in contact with the first inclined surface; and

a platen fixedly connected to the stage and disposed above the slider, the platen configured to prevent upward disengagement of the slider;

when the objective table moves, the pressure plate is driven to move, the pressure plate pushes the sliding block to move along the first inclined plane of the push block, and therefore the distance between the sliding block and the center of the push block is changed.

Preferably, the radial expansion mechanism further comprises at least one spring, the spring abutting between the base and the stage.

Preferably, the return means comprises at least one elastic ring, which is sleeved outside each slide block.

Preferably, the outer side of the sliding block is provided with a fixing groove for accommodating the elastic ring.

Preferably, the slider has a second inclined surface corresponding to the first inclined surface.

Preferably, the outer side of the sliding block is a cylindrical surface.

Preferably, the pushing block is fixedly connected with the base through a first guide post, the object stage is provided with a first guide hole corresponding to the first guide post, and the object stage moves along the first guide post.

In a second aspect, an embodiment of the present invention further provides an assembly jig, where the assembly jig includes a pressing head and the radial expansion mechanism according to the first aspect.

Preferably, the jig further comprises at least one positioning pin for positioning the workpiece, and the positioning pin is fixedly connected with the object stage.

Preferably, the stage further has at least one contoured groove that conforms to the shape of the workpiece.

The embodiment of the invention provides a radial expansion mechanism and an assembling jig, wherein a push block is fixedly connected with a base and is provided with at least one first inclined surface, at least two sliding blocks are arranged on the outer side of the push block, a pressure plate is arranged above the sliding blocks and is fixedly connected with an objective table, when the objective table moves, the pressure plate moves along with the sliding blocks to push the sliding blocks to move along the first inclined surfaces of the push block, so that the distance between the sliding blocks and the center of the push block is changed, the outer contour of the sliding blocks expands radially, and a workpiece arranged on the outer side of the sliding blocks is driven to move. Therefore, according to the technical scheme of the embodiment of the invention, a plurality of radial external forces can be simultaneously applied to the workpiece on the outer side of the sliding block, so that the assembly and pressure maintaining of the product are facilitated.

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 perspective view of a radial expansion mechanism according to a first embodiment of the present invention;

FIG. 2 is a front view of the radial expansion mechanism of the first embodiment of the present invention;

FIG. 3 is a top view of the radial expansion mechanism of the first embodiment of the present invention;

FIG. 4 is a schematic sectional view A-A of the radial expansion mechanism of the first embodiment of the present invention;

FIG. 5 is a schematic view in section B-B of the radial expansion mechanism of the first embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a push block according to a first embodiment of the present invention;

FIG. 7 is a schematic structural view of a slider and an elastic ring according to a first embodiment of the present invention;

fig. 8 is a schematic structural diagram of an assembly fixture according to a second embodiment of the invention.

Description of reference numerals:

1-a base; 2-an object stage; 21-a first guide hole; 3-pushing a block; 31-a first bevel; 32-a first guide post; 4-a slide block; 41-fixed groove; 42-a second bevel; 5-an elastic ring; 6-pressing a plate; 7-a spring; 8-a shell; 91-a pressure head; 92-positioning pin.

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. It will be apparent to one 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 this specification, 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.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean that, for example, they may be fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

When an element or layer is referred to as being "on," "engaged to," "connected to" or "coupled to" another element or layer, it may be directly on, engaged, connected or coupled to the other element or layer or intervening elements or layers may be present. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The first embodiment is as follows:

fig. 1 to 3 are a schematic perspective view, a front view and a plan view of the radial expansion mechanism of the present embodiment, respectively, and fig. 4 and 5 are schematic sectional views in the a-a direction and the B-B direction of the radial expansion mechanism of fig. 3, respectively. As shown in fig. 1 to 5, the radial expansion mechanism of the present embodiment includes a base 1, an object stage 2, a pushing block 3, at least two sliding blocks 4, a resetting device, and a platen 6. The stage 2 is disposed above the base 1 and movably connected to an upper end surface of the base 1. The lower end of the push block 3 is fixedly connected with the base 1, the push block 3 is provided with at least one first inclined surface 31, and the sliding block 4 is arranged on the outer side of the push block 3. The reset device is connected with the sliding block 4 and is used for keeping the sliding block 4 in contact with the first inclined surface 31 of the push block 3. The pressure plate 6 is fixedly connected with the object stage 2 and arranged above the sliding block 4 for preventing the sliding block 4 from being separated upwards. When the objective table 2 moves, the pushing block 3 and the pressure plate 6 are driven to move, and the pressure plate 6 pushes the sliding block 4 to move along the first inclined surface 31 of the pushing block 3, so that the distance between the sliding blocks 4 is changed.

The base 1 can be in the shape of a cuboid, a cylinder, a circular truncated cone and the like and is suitable for being placed on a stable horizontal surface or other positions. The object stage 2 is used for bearing products, and the object stage 2 is movably connected with the upper end face of the base 1, namely, the distance between the object stage 2 and the upper end face of the base 1 can be changed. In an alternative embodiment, the radial expansion mechanism may comprise at least one spring 7, the spring 7 abutting between the base 1 and the object table 2.

The lower end of the push block 3 is fixedly connected with the base 1, and when the object stage 2 moves downwards, the push block 3 moves upwards relative to the object stage 2. The outer side of the push block 3 has at least one first inclined surface 31, and the first inclined surface 31 may be a plane, an arc surface, a spherical surface or other shapes. Alternatively, the distance between the first inclined surface 31 and the center of the push block 3 increases from the upper end to the lower end of the push block 3. When the sliders 4 move downward along the first inclined surface 31, the distance between the sliders 4 and the center of the push block 3 is gradually increased, and thus, each slider 4 is expanded outward in the radial direction with respect to the center of the push block 3, thereby moving a product placed outside the slider 4 outward.

The radial expansion mechanism may include more than two sliders 4, and the sliders 4 are disposed outside the push block 3 and contact the first inclined surface 31. The outer side of the push block 3 may have a plurality of first inclined surfaces 31, and the number of the sliders 4 may correspond to the number of the first inclined surfaces 31.

Fig. 6 is a schematic structural diagram of the push block of the present embodiment, and fig. 7 is a schematic structural diagram of the slider and the elastic ring of the present embodiment. Alternatively, as shown in fig. 1 to 7, two first inclined surfaces 31 are symmetrically arranged on both sides of the push block 3, the radial expansion mechanism has two sliding blocks 4, the sliding blocks 4 are substantially semi-annular, and the two sliding blocks 4 are symmetrically arranged on both sides of the push block 3. The outside of the slider 4 may be a cylindrical surface (e.g., cylindrical surface, etc.), or other surface that conforms to the product to be distended or moved.

The slider 4 may further have a second inclined surface 42 corresponding to the first inclined surface 31, and the inclined angles of the first inclined surface 31 and the second inclined surface 42 may be the same. The included angles of the first inclined surfaces 31 may be completely the same, or may be set to different included angles according to actual needs. The specific size of the included angle can be selected according to actual needs, and the distance of the sliding block 4 moving along the axial direction can be calculated according to the size of the included angle and the distance of the sliding block 4 moving along the direction perpendicular to the base 1.

In an alternative embodiment, the restoring means may comprise at least one elastic ring 5, the elastic ring 5 is sleeved on the outer side of each sliding block 4, so that each sliding block 4 can keep contacting with the first inclined surface 31 of the pushing block 3, and therefore, when the object stage 2 is acted by a force to move downwards, the sliding blocks 4 can move downwards along the first inclined surfaces 31 and expand outwards, and the elastic ring 5 also expands. When the downward force is removed, the object stage 2 moves upward due to the elastic force of the spring 7, the elastic force of the elastic ring 5 causes the sliding block 4 to contact the first inclined surface 31 and move upward along the first inclined surface 31, and the distance between the sliding blocks 4 is shortened, thereby restoring. The outer side of the slider 4 may have a fixing groove 41, the shape of the fixing groove 41 is adapted to the shape of the elastic ring 5, and the elastic ring 5 is disposed in the fixing groove 41 to prevent the elastic ring 5 from being displaced. One skilled in the art can also arrange a plurality of elastic rings 5 and corresponding fixing grooves 41 as required.

In another alternative embodiment, the restoring means may comprise a plurality of elastic strings, each of which connects two adjacent sliders 4, thereby integrally connecting the plurality of sliders 4 and allowing each of the sliders 4 to maintain contact with the push block 3.

The push block 3 can be fixedly connected with the base 1 through a first guide post 32, the object stage 2 is provided with a first guide hole 21 corresponding to the first guide post 32, and the first guide post 32 is basically vertical to the base 1 and is basically parallel to the axis of the push block 3. First guide post 32 wears to locate in first guiding hole 21, and objective table 2 can remove along first guide post 32 to make objective table 2 and slider 4 can move steadily, prevent to take place radially ascending rocking.

The platen 6 may be of a sheet-like construction, alternatively the platen 6 is of a circular sheet-like shape. The pressure plate 6 is arranged above the slide block 4 and is fixedly connected with the object stage 2. When objective table 2 downstream, pressure disk 6 compresses tightly slider 4 all the time, makes slider 4 downstream simultaneously, prevents that slider 4 from breaking away from at the in-process of outside expansion.

The radial expansion mechanism of the embodiment is suitable for various occasions needing to apply radial force in different directions to a single workpiece or a plurality of workpieces. For example, when the annular workpiece needs to be expanded, the workpiece may be sleeved outside the sliding block 4, and then the stage 2 is pressed to a predetermined position and held for a while, and the sliding block 4 drives the workpiece to move and expand to a desired size.

The embodiment of the invention provides a radial expansion mechanism, wherein a push block is fixedly connected with a base and is provided with at least one first inclined surface, at least two slide blocks are arranged at the outer side of the push block, a pressure plate is arranged above the slide blocks and is fixedly connected with an object stage, when the object stage moves, the pressure plate moves along with the slide blocks, the slide blocks are pushed to move along the first inclined surfaces of the push block, so that the distance between the slide blocks and the center of the push block is changed, the outer contour of the slide blocks expands in the radial direction, and a workpiece arranged at the outer side of the slide blocks is driven to move. Therefore, according to the technical scheme of the embodiment of the invention, a plurality of radial external forces can be simultaneously applied to the workpiece on the outer side of the sliding block, so that the assembly and pressure maintaining of the product are facilitated.

Example two:

the radial expansion mechanism of the first embodiment can be matched with other parts to form an assembly jig. Fig. 8 is a schematic structural diagram of the assembly jig of the present embodiment. In an alternative embodiment, as shown in fig. 8, the assembly jig of the present embodiment includes a pressing head 91 and the radial expansion mechanism of the first embodiment.

During the assembly of the product, it is often necessary to mount other workpieces on the inner side of the housing or the annular workpiece by means of bonding, welding, or the like. The present embodiment takes the assembly of the anti-theft buckle, i.e. bonding a plurality of magnets inside the hemispherical shell 8 as an example, and describes the structure and the usage of the assembly jig.

The object stage 2 can be provided with the profile groove corresponding to the shape of the magnet, the magnets are placed in the corresponding profile grooves, certain intervals can be formed between the profile grooves, and attraction between the magnets can be prevented. Alternatively, the contour groove may be fixed with a positioning means, which may be a magnet having a magnetic pole opposite to that of the magnet, and when the magnet is placed in a wrong direction, the magnet may be pushed out of the contour groove by magnetic force due to the principle of like-pole repulsion, so that the wrong direction placement of the magnet may be prevented.

In use, the magnets are placed in the corresponding contour grooves, the corresponding positions of the hemispherical shells 8 are coated with adhesive and buckled on the object stage 2, the shapes of the pressing heads 91 and the outer surfaces of the shells 8 are basically consistent, and the pressing heads 91 are basically parallel to the axis of the push block 3, namely the pressing heads 91 are basically vertical to the object stage 2. The pressure head 91 is contacted with the shell 8, the pressure head 91 applies downward pressure to the shell 8 to enable the objective table 2 and the sliding block 4 to move downward, the sliding block 4 expands outwards along with the downward pressure, the magnet in the profiling groove is pushed to move outwards to a preset position, the magnet is contacted with the adhesive on the inner side of the shell 8 and is kept for a period of time, and the magnet and the shell 8 are firmly bonded together.

Optionally, the assembly fixture may further include at least one positioning pin 92, the positioning pin 92 may be fixedly connected to the object stage 2, the housing 8 may have a positioning hole or a positioning groove corresponding to the positioning pin 92, and the positioning pin 92 may be matched with the positioning hole or the positioning groove to position the housing 8.

Alternatively, the assembly jig may further have a second guide post, which may be fixedly connected to the pressing head 91 and substantially perpendicular to the stage 2, and the stage 2 may have a second guide hole corresponding to the second guide post. The second guide post moves along the second guide hole, so that the indenter 91 can move substantially in the direction perpendicular to the stage 2.

The equipment tool of this embodiment through setting up the pressure head of perpendicular to objective table, makes the motion of perpendicular to objective table direction convert the radial ascending motion of slider to be convenient for assemble and pressurize the operation on the arc work piece.

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 in the protection scope of the present invention.

Claims

1. A radial expansion mechanism, comprising:

a base (1);

the object stage (2) is movably connected with the upper end face of the base (1);

the pushing block (3) is fixedly connected with the base (1), and the pushing block (3) is provided with at least one first inclined surface (31);

at least two sliding blocks (4) arranged on the outer side of the push block (3);

a return device connected to the slider (4), the return device being configured to keep the slider (4) in contact with the first inclined surface (31); and

a platen (6) fixedly connected to the stage (2) and disposed above the slider (4), the platen (6) being configured to prevent upward disengagement of the slider (4);

when the objective table (2) moves, the pressure plate (6) is driven to move, the pressure plate (6) pushes the sliding block (4) to move along the first inclined plane (31) of the push block (3), and therefore the distance between the sliding block (4) and the center of the push block (3) is changed.

2. Radial expansion mechanism according to claim 1, further comprising at least one spring (7), said spring (7) abutting between said base (1) and said object table (2).

3. A radial expansion mechanism according to claim 1, wherein the return means comprise at least one elastic ring (5), said elastic ring (5) being fitted outside each of said sliding blocks (4).

4. A radial expansion mechanism according to claim 3, characterized in that the outside of the sliding block (4) has a fixing groove (41) for accommodating the elastic ring (5).

5. Radial expansion mechanism according to claim 1, wherein the slider (4) has a second inclined surface (42) corresponding to the first inclined surface (31).

6. Radial expansion mechanism according to claim 1, wherein the outside of the slider (4) is cylindrical.

7. The radial expansion mechanism of claim 1, wherein the push block (3) is fixedly connected to the base (1) via a first guide post (32), and the stage (2) has a first guide hole (21) corresponding to the first guide post (32), and the stage (2) moves along the first guide post (32).

8. An assembly jig, characterized in that it comprises a press head (91) and a radial expansion mechanism according to any one of claims 1 to 7.

9. A jig according to claim 8, characterized by further comprising at least one positioning pin (92) for positioning a workpiece, said positioning pin (92) being fixedly connected to said object table (2).

10. A tool as claimed in claim 8, characterised in that the stage (2) also has at least one contoured groove which conforms to the shape of the workpiece.