CN114670461B

CN114670461B - Anti-deformation device for ultrasonic welding of automobile lining wrapping layer

Info

Publication number: CN114670461B
Application number: CN202210308745.9A
Authority: CN
Inventors: 杨清嘉; 周宁鹭; 王正洲; 季磊; 吴创生
Original assignee: Kunshan Jiayu Automobile Decoration Members Co ltd
Current assignee: Kunshan Jiayu Automobile Decoration Members Co ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2023-05-12
Anticipated expiration: 2042-03-25
Also published as: CN114670461A

Abstract

The invention discloses an anti-deformation device for ultrasonic welding of an automobile inner lining wrapping layer, which comprises an upper die, step surfaces arranged on the upper die, positioning rods fixedly connected with a thread groove through screws, and limiting parts arranged in U-shaped grooves at the positioning ends of the positioning rods.

Description

Anti-deformation device for ultrasonic welding of automobile lining wrapping layer

Technical Field

The invention relates to the technical field of welding, in particular to an anti-deformation device for ultrasonic welding of an inner lining body wrapping layer of an automobile.

Background

Ultrasonic welding is to transfer high-frequency vibration waves to the surfaces of two objects to be welded, and under the condition of pressurization, the surfaces of the two objects are rubbed with each other to form fusion between molecular layers.

In ultrasonic welding, certain pressure is required, the welding head is transmitted to a workpiece under the action of the pressure, for some plastic parts such as an automobile lining plate wrapping layer, a front lamp, an instrument panel, a button, a switch and the like, if a welding area of the plastic parts is thinner, the plastic parts are easy to deform or even break under the action of the pressure, the best mode is to arrange the reinforcing ribs below the welding area in the initial design stage, but because the problem of design in the design stage is more, or the structural strength, the installation space and the like are considered, not all the welding areas can be provided with the reinforcing ribs, and even if the reinforcing ribs are arranged, the middle area can be arched upwards to generate local deformation, the workpiece is easy to break, the yield is not high, the arch in the middle of the welding area can be avoided through the whole plane filling of the welding head, the breakdown problem can be caused, the ultrasonic welding machine can not be combined in the whole area when the plastic parts which are thinner are welded, the welding is often the middle part is broken, the middle part is required to be broken when the ultrasonic welding head is designed, the non-welding is not directly contacted with a common die head, and the problem of local deformation is preferably considered. Therefore, we propose an anti-deformation device for ultrasonic welding of an inner lining coating layer of an automobile.

Disclosure of Invention

The invention aims to provide an anti-deformation device for ultrasonic welding of an inner lining wrapping layer of an automobile, so as to solve the problems in the background art.

In order to achieve the above purpose, the present invention provides the following technical solutions: anti-deformation device is used in ultrasonic welding of automobile inner lining body parcel layer, including last mould, still include:

the shape of the step surface is consistent with the shape of the welding edge, and a plurality of thread grooves are formed in the top of the step surface;

the positioning rods are fixedly connected to the thread grooves through screws, at least two groups of positioning rods are arranged, U-shaped grooves are formed in the positioning rods, and the positioning ends of the positioning rods are distributed in an upper-lower adjacent superposition state;

the locating device comprises locating pieces arranged in U-shaped grooves at the locating ends of the locating rods, wherein the locating pieces are used for limiting and fixing the locating rods, the bottoms of the locating pieces are connected with adsorption pieces, and the adsorption pieces act on the central positions in welding areas of workpieces.

Preferably, the limiting part comprises polygonal bodies with the same number as the positioning rods, the axial hollow surfaces of the polygonal bodies are regular polygon surfaces, the regular polygon surfaces are provided with even-numbered edges, the distance between every two opposite surfaces is the same as the width of the U-shaped groove, adjacent two adjacent ends of the polygonal bodies are rotationally connected, locking parts are arranged between the inner parts of the adjacent ends of the adjacent two polygonal bodies, and the locking parts are used for limiting the relative rotation of the adjacent two polygonal bodies.

Preferably, the locking piece is including being fixed in the solid fixed ring of polygonal internal end, and two adjacent fixed ring inboard is equipped with the adjusting ring, and two fixed rings of every adjacent ends of two polygonal bodies are a set of, and two sets of sunken at least are seted up to this group fixed ring inboard, and the projection of sunken hypotenuse slope of sunken along its thickness direction is isosceles trapezoid and same group is the same and the sunken short base on one of them fixed ring is greater than the sunken long base of another fixed ring, at least two sets of in the same group fixed ring at least one set of sunken with other group set up the complete opposite in fixed ring axial direction, the surface of adjusting ring is equipped with the stopper, stopper and sunken adaptation setting and sliding connection, the inboard of adjusting ring is equipped with the spacing ring, the inboard threaded connection of spacing ring has the screw rod, be equipped with spacing between adjusting ring and the spacing ring.

Preferably, the limiting angle between the adjusting ring and the limiting ring is twice the included angle between the single plane axial edge of the surface of the polygon and the two planes generated between the axes of the polygon.

Preferably, an annular cavity is formed between adjacent sides of the adjusting ring and the limiting ring, and a reset piece is arranged in the annular cavity.

Preferably, the inner top of the polygonal body positioned at the top is fixedly connected with a threaded ring, and the inner surface of the threaded ring is in threaded connection with the screw rod.

Preferably, the adsorption piece is a vacuum chuck, and the vacuum chuck is of a multi-cavity structure.

Preferably, transition areas are arranged at two ends of the outer surface of the polygon.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the step surfaces are arranged on the upper die, the level heights of the step surfaces are the same, the positions of the single positioning rods are fixed through the threaded grooves on the step surfaces, meanwhile, the limiting parts can move in the U-shaped grooves of two or more positioning rods due to the arrangement of the U-shaped grooves, after the positions are determined, the limiting parts are fixed by the locking parts, so that two adjacent polygons can not rotate relatively any more, the positions are completely limited, the fixing is performed, and the workpiece surfaces in a suspended area are not deformed up and down by being matched with the sucking disc of the multi-cavity structure, so that deformation is prevented, the welding effect is ensured, and the yield is ensured.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic view of the whole structure of the limiting member of the present invention;

FIG. 3 is a schematic view of the internal structure of the limit part in the polygonal half-cut state;

FIG. 4 is an overall exploded view of the latch;

FIG. 5 is a schematic view of a recess structure and a stopper structure;

FIG. 6 is a schematic view of the structure opposite to that of FIG. 5;

FIG. 7 is a schematic view of a partial cross-sectional structure of an adjusting ring and a stop ring;

fig. 8 is a schematic structural view of the absorbent member.

In the figure: 1-upper die; 2-step surface; 3-thread grooves; 4-positioning rods; a 5-U-shaped groove; 6-limiting pieces; 7-an adsorption element; 8-polygon; 9-a locking member; 10-fixing ring; 11-an adjusting ring; 12-recessing; 13-limiting blocks; 14-limiting rings; 15-a screw; 16-an annular cavity; 17-a reset piece; 18-threaded ring.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-8, the present invention provides a technical solution: the utility model provides an automobile inner lining body parcel layer ultrasonic welding is with preventing deformation device, includes mould 1, still includes:

the upper die 1 is mainly used for connecting a welding head and limiting workpieces, the horizontal heights of the step surfaces 2 on the upper die 1 are the same, and different upper dies are required to be arranged for each type of welding workpiece, so that the shape of the inner edge of the step surface 2 is similar to the shape of a welding area, and the thread grooves 3 are uniformly arranged at intervals;

the positioning rods 4 are fixedly connected to the thread grooves 3 through screws, the positioning rods 4 are at least provided with two groups, the positioning rods 4 are provided with U-shaped grooves 5, the positioning ends of the positioning rods 4 are distributed in an up-down adjacent superposition state, the positioning rods 4 are flat, at least two groups of positioning rods can be used for determining a position, and the up-down superposition state is located at different heights in the vertical direction, so that positioning is facilitated;

the limiting piece 6 is arranged in the U-shaped groove 5 at the positioning end of each positioning rod 4, the limiting piece 6 is used for limiting and fixing each positioning rod 4, the bottom of the limiting piece 6 is connected with the absorbing piece 7, the absorbing piece 7 acts on the central position in the welding area of a workpiece, each positioning rod 4 and the U-shaped groove 5 can cause difficulty in determining a uniform position, therefore, the limiting piece 6 is required to be arranged for limiting the position, the unique position is determined, the limiting piece is fixed in a mode of locking through bolts and nuts, the absorbing piece 7 is mainly used for connecting a suspended workpiece in the welding area, for thinner workpieces, the suspended area is large and is easy to damage under the action of pressure, the absorbing piece 7 is arranged to avoid deformation, the absorbing piece 7 is a vacuum chuck, and the vacuum chuck is of a multi-cavity structure, because the absorbing piece 7 is also the workpiece in the whole area is absorbed only by the vacuum chuck and is stressed by upward pulling force, therefore the whole area is dispersed into a plurality of tiny areas by the multi-cavity structure, damage is avoided, in addition, the absorbing piece 7 can also adopt a plate-shaped structure with a plurality of areas, electrostatic absorption function can be realized through electrostatic absorption function.

Compared with the mode of bolt tightening, the friction force generated by the tightening of the bolt mainly depends on axial pressure to enable the two contacted positioning rods 4 not to relatively rotate or move along the length direction of the positioning rods 4, so that the limitation is limited and unstable, for better limiting fixation, each limiting piece 6 comprises polygonal bodies 8 with the same quantity as the positioning rods 4, the axial hollow outer surfaces of the polygonal bodies 8 are regular polygonal surfaces, each regular polygonal surface is an end surface view of each regular polygonal surface, each regular polygonal surface is a regular polygon, the distance between every two opposite surfaces is the same as the width of each U-shaped groove 5, the effect that each regular polygon is provided with an even number of opposite surfaces can correspond to the two edges of each U-shaped groove 5, the polygonal bodies 8 can not rotate in the U-shaped grooves after being placed in the U-shaped grooves, the adjacent polygonal bodies 8 can only move up and down or along the length direction of each U-shaped groove, the adjacent ends of the polygonal bodies 8 are rotationally connected, the locking pieces 9 are arranged between the adjacent ends of the adjacent polygonal bodies 8, and the two opposite ends of the adjacent polygonal bodies 8 can be locked in a mode that the two opposite sides of the polygonal bodies 4 can not rotate, and the two opposite positions of the polygonal bodies 4 can be limited by the two opposite positioning rods 4.

Because the welding area lines are different, the shape and the center of the suspended surface in the middle are different, so that the positioning rods 4 are provided with a plurality of groups, the length sequences of the positioning rods are distributed, and when the welding area lines are used, only two or more than two positioning rods are needed, and the adsorption piece can be fixed at any position through different length combinations and the arrangement of the U-shaped groove, so that the welding area lines are adjusted according to different welding pieces.

The locking piece 9 comprises a fixed ring 10 fixed at the inner end of the polygonal body 8, an adjusting ring 11 is arranged at the inner side of each adjacent two fixed rings 10, two fixed rings 10 at the adjacent ends of each adjacent two polygonal bodies 8 are in one group, at least two groups of concave 12 are formed at the inner side of each group of fixed rings 10, the projection of the concave 12 along the thickness direction of each concave 12 is isosceles trapezoid, the slope of the oblique side of each concave 12 in the same group is identical, the short bottom edge of each concave 12 on one fixed ring 10 is larger than the long bottom edge of each concave 12 of the other fixed ring 10, at least one group of concave 12 in the same group of fixed rings 10 is completely opposite to the other groups of concave 12 in the axial direction of the fixed ring 10, namely, the two adjacent fixed rings 10 are in one group, the same position of the adjacent two fixed rings 10 are provided with concave 12, as shown in fig. 5 and 6, the whole view along the cross section direction is isosceles trapezoid, the limit between the two trapezoids of the concave 12 at the same position is the boundary between the two fixed rings 10, the short bottom edges of one trapezoids are larger than the long bottom edges of the other, or the same, the opposite sides of the two trapezoids are not rotated, and the opposite sides of the concave 12 are arranged on one group of the opposite sides of the concave 12, and the opposite sides are completely opposite sides are arranged.

As shown in fig. 5 and 6, the outer surface of the adjusting ring 11 is provided with a limiting block 13, the limiting block 13 is adaptively arranged with the concave 12 and is in sliding connection, the shape of the limiting block 13 coincides with the concave 12, because only one side of two trapezoids of the concave 12 is an action side, therefore, under the action of the limiting block 13, one unidirectional relative rotation of two adjacent fixing rings 10 can be limited, as shown in fig. 5, namely, the fixing ring 10 above the limiting block is limited to rotate anticlockwise, the fixing ring 10 below the limiting block is limited to rotate clockwise, and opposite to fig. 6, therefore, at least two opposite limiting blocks 13 can completely limit the relative rotation of the two fixing rings 10, only synchronous rotation can be realized, the inner side of the adjusting ring 11 is provided with a limiting ring 14, the inner side of the limiting ring 14 is in threaded connection with a screw 15, and a limit is arranged between the adjusting ring 11 and the limiting ring 14, because the limiting block 13 is limited to move in the axial direction of the fixing ring 10, as required, as shown in fig. 5, namely, the limiting ring 10 is limited to rotate anticlockwise, the limiting ring 14 is not axially in the state of the screw 15, and thus, the limiting ring 14 can not move in the axial direction any more, and the opposite rotation can be limited, even if the two adjacent fixing rings 10 rotate in the opposite directions, and the limiting ring 11 rotate in the opposite directions can be limited in the opposite rotation direction, and the limit ring 11 can rotate in the opposite rotation, and the limit angle is limited, and the limit ring 11 can be limited in the opposite rotation.

Under the condition that the screw 15 is not installed, the rotation of the fixing ring 10 can enable the limiting block 13 to move up and down under the action of the inclined edges of the concave 12, because the outer surface of each polygonal body 8 is of a regular polygon, the more the edges of the polygons are, the smaller the angle required to rotate when the positions of the two positioning rods 4 are fixed, but the smaller the contact surface area of the polygonal bodies 8 and the U-shaped grooves is also caused, so that the end face view of the polygonal bodies 8 is preferably arranged to be of a regular dodecagon, two ends of the outer surface of the polygonal bodies 8 are respectively provided with a transition area, the transition areas refer to inclined surfaces or arc-shaped curved surfaces, and because the limiting piece 6 is required to rotate for different angles when the focal positions of the positioning rods 4 are determined, no transition area is required to directly cause clamping, and the transition areas are arranged to enable the maximum outer diameter of the end faces of the polygonal bodies 8 to be reduced and can enter the U-shaped grooves 5, then the planes of the outer surfaces of the polygonal bodies 8 are enabled to be automatically rotated under the action of the inclined surfaces or curved surfaces, the planes are enabled to correspond to the side edges of the U-shaped grooves 5, and then locking is carried out through the locking 9.

The spacing angle between the adjusting ring 11 and the spacing ring 14 is twice the included angle between the single plane axial edge of the surface of the polygonal body 8 and the two planes generated between the axes of the polygonal body 8, and the arrangement of the relative rotation angle between the adjusting ring 11 and the spacing ring 14 has an effect of facilitating the installation of the screw 15, because at least two spacing rings 14 are arranged, the polygonal body 8 in the spacing piece 6 rotates because of the U-shaped groove 5, the spacing ring 14 rotates, the initial screwing position of the threaded connection of the spacing ring 14 and the screw 15 changes, and the different spacing rings 14 change, so that the screw 15 cannot be installed, and the spacing ring 14 can rotate relative to the adjusting ring 11, thereby facilitating the screwing of the screw 15.

An annular cavity 16 is formed between the adjacent sides of the adjusting ring 11 and the limiting ring 14, a reset piece 17 is arranged in the annular cavity 16, and the reset piece 17 is preferably a clockwork spring or a torsion spring, which is used for keeping the limiting ring 14 in a centered state, namely, can rotate clockwise or anticlockwise relative to the adjusting ring 11.

The inner top of the polygonal body 8 at the top is fixedly connected with a threaded ring 18, and the inner surface of the threaded ring 18 is in threaded connection with the screw 15, so that after different limiting rings 14 are in threaded connection with the screw 15, the fixing ring 10 is positioned, but in extreme cases, the two different locking members 9 are completely identical, i.e. the screw 15 and each limiting ring 14 form a whole and can move up and down, so that the fixing ring 10 cannot be fixed, and therefore, an additional threaded ring 18 is provided to avoid such extreme conditions.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an automobile inner lining body parcel layer ultrasonic welding is with preventing deformation device, includes mould (1), its characterized in that: further comprises:

the shape of the step surface (2) is consistent with the shape of the welding edge, and a plurality of thread grooves (3) are formed in the top of the step surface (2);

the positioning rods (4) are fixedly connected to the thread grooves (3) through screws, the positioning rods (4) are at least provided with two groups, the positioning rods (4) are provided with U-shaped grooves (5), and the positioning ends of the positioning rods (4) are distributed in an upper-lower adjacent superposition state;

the limiting pieces (6) are arranged in the U-shaped grooves (5) at the positioning ends of the positioning rods (4), the limiting pieces (6) are used for limiting and fixing the positioning rods (4), the bottom of each limiting piece (6) is connected with an adsorption piece (7), and the adsorption piece (7) acts on the central position in a welding area of a workpiece;

the limiting parts (6) comprise polygonal bodies (8) with the same number as the positioning rods (4), the axial hollow outer surfaces of the polygonal bodies (8) are regular polygon surfaces, the regular polygon surfaces are provided with even sides, the distance between every two opposite surfaces is the same as the width of the U-shaped groove (5), the adjacent ends of the adjacent polygonal bodies (8) are rotationally connected, locking parts (9) are arranged between the inner parts of the adjacent ends of the adjacent polygonal bodies (8), and the locking parts (9) are used for limiting the relative rotation of the adjacent polygonal bodies (8);

the locking piece (9) is including being fixed in solid fixed ring (10) of tip in polygonal body (8), and two adjacent fixed ring (10) inboard is equipped with adjusting ring (11), and two fixed rings (10) of the adjacent end of every two adjacent polygonal bodies (8) are a set of, and two sets of sunken (12) have at least been seted up to this set of fixed ring (10) inboard, and the projection of sunken (12) of recess (12) of same group is isosceles trapezoid and the hypotenuse slope the same and the short base of sunken (12) on one of them fixed ring (10) is greater than the long base of sunken (12) of another fixed ring (10), with at least two sets of in the fixed ring (10) of group have a set of with other sunken (12) in fixed ring (10) axial direction setting completely opposite, the surface of adjusting ring (11) is equipped with stopper (13), stopper (13) and sunken (12) adaptation setting and sliding connection, the inboard of adjusting ring (11) is equipped with spacing ring (14), spacing ring (14) are connected with spacing screw (15) between spacing ring (14).

2. The deformation preventing device for ultrasonic welding of an automotive inner liner wrapping according to claim 1, wherein: the limiting angle between the adjusting ring (11) and the limiting ring (14) is twice the included angle between the axial edge of a single plane of the surface of the polygonal body (8) and two planes generated between the axis of the polygonal body (8).

3. The deformation preventing device for ultrasonic welding of an automotive inner liner wrapping according to claim 1, wherein: an annular cavity (16) is formed between adjacent sides of the adjusting ring (11) and the limiting ring (14), and a reset piece (17) is arranged in the annular cavity (16).

4. The deformation preventing device for ultrasonic welding of an automotive inner liner wrapping according to claim 1, wherein: the inner top of the polygonal body (8) positioned at the top is fixedly connected with a threaded ring (18), and the inner surface of the threaded ring (18) is in threaded connection with a screw rod (15).

5. The deformation preventing device for ultrasonic welding of an automotive inner liner wrapping according to claim 1, wherein: the adsorption piece (7) is a vacuum chuck, and the vacuum chuck is of a multi-cavity structure.

6. The deformation preventing device for ultrasonic welding of an automotive inner liner wrapping according to claim 1, wherein: transition areas are arranged at two ends of the outer surface of the polygonal body (8).