CN113619140A

CN113619140A - Vibration friction welding is exempted from to break and is torn open degree of depth and detect structure

Info

Publication number: CN113619140A
Application number: CN202110843764.7A
Authority: CN
Inventors: 周博; 王志锋; 吴亮; 汤学攀
Original assignee: Dongfeng Yanfeng Automotive Trim Systems Co Ltd
Current assignee: Dongfeng Yanfeng Automotive Trim Systems Co Ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2021-11-09

Abstract

The invention relates to the field of welding production of automobile plastic parts, and discloses a vibration friction welding break-free depth detection structure which comprises a to-be-welded part, wherein a step rib group is arranged on a welding surface of the to-be-welded part, the step rib group comprises a plurality of layers of step ribs, the level of each step rib is more than or equal to two, and the step ribs with the height of each level represent evaluation of different welding depths. The vibration friction welding break-in-free depth detection structure can visually and effectively judge the welding depth more intuitively, save the process of checking the welding depth by a break-in part, improve the welding checking efficiency and save the cost of the break-in part.

Description

Vibration friction welding is exempted from to break and is torn open degree of depth and detect structure

Technical Field

The invention relates to the field of welding production of automobile plastic parts, in particular to a vibration friction welding break-in-free depth detection structure.

Background

Vibration friction welding processes are commonly used in the automotive plastic part manufacturing field, particularly in the interior trim manufacturing field, such as: instrument panel duct welding, airbag frame welding, glove box welding, and the like. The welding area and the welding depth of the welding parts need to meet the requirements of certain strength performance between the welding parts, and the produced parts can flow to the next procedure.

However, the vibration friction welding currently has no unified, most effective and rapid welding depth evaluation method, which is mainly limited in that the vibration friction welding belongs to surface-to-surface welding, a welding rib is generally covered by a welded part, and whether the welding depth state of the welding rib meets the requirement cannot be seen on the outer side of the part.

Normally, production team operators break the first welded part (for example, glove box welding), and preliminarily evaluate whether the welding coverage and the welding depth of the produced part meet requirements by visually observing the state of a welding rib of the broken part. The welding of the air bag frame is generally designed with a measuring hole on the air bag frame, and the depth of the partial region is evaluated by measuring with a vernier caliper after welding. Also have with gasbag frame welding spare cutting back, measure gross thickness through slide caliper, then calculate the mode of welding depth, this kind of aassessment degree of depth mode is more accurate relatively than brokenly tearing part visual welding muscle state open, but also belongs to brokenly tearing part open, and the process is loaded down with trivial details than measuring hole direct measurement.

In summary, although there are some measurement and evaluation methods for the vibration friction welding depth, most of them mainly use the methods of measuring and visually checking the welding rib state after breaking the parts to judge whether the welding meets the requirements. The assessment methods not only need to spend more production time to assess whether welding meets requirements or not, but also consume production working hours, and meanwhile, one welding assembly part needs to be consumed each time a shift is started, so that production waste is caused. If the depth is estimated by measuring the hole, generally only the depth of the position of a specific designed measuring point can be estimated, and the measuring result has certain difference due to different measuring persons and different methods, and the welding depth of the part cannot be comprehensively and accurately estimated.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a vibration friction welding forcible entry-free depth detection structure, which can visually and effectively judge the welding depth more intuitively, save the welding depth detection process of forcible entry parts, improve the welding detection efficiency and save the costs of the forcible entry parts.

In order to achieve the purpose, the vibration friction welding break-in-free depth detection structure comprises a to-be-welded part, wherein a step rib group is arranged on a welding surface of the to-be-welded part, the step rib group comprises a plurality of layers of step ribs, the level of each step rib is greater than or equal to two, and the step ribs with the height of each level represent evaluation of different welding depths.

Preferably, the step rib group is arranged inside the part to be welded, a sight hole is arranged on an opponent part of the part to be welded, and the welding condition of the step rib group can be observed through the sight hole.

Preferably, the to-be-welded piece is provided with a sight hole corresponding to the sight hole on the opposite piece.

Preferably, ladder muscle group includes four layers of ladder muscle, is first layer ladder muscle, second floor ladder muscle, third layer ladder muscle and fourth layer ladder muscle in proper order, first layer ladder muscle is the welding muscle contact point, second floor ladder muscle is spacing under the welding, third layer ladder muscle is the welding median position, the spacing is gone up for welding to fourth layer ladder muscle.

Preferably, the step rib group is positioned on the side of the welding surface of the piece to be welded.

Compared with the prior art, the invention has the following advantages: in the vibration friction welding process, the welding depth can be visually judged effectively, the process of detecting the welding depth by breaking and dismantling parts is omitted, the welding detection efficiency is improved, and the cost of breaking and dismantling the parts is saved.

Drawings

FIG. 1 is a schematic structural diagram of a vibration friction welding break-in-free depth detection structure according to the present invention;

FIG. 2 is a schematic view showing the structure of the outer lid of the glove box in the embodiment;

FIG. 3 is a schematic view showing the structure of an inner lid of the glove box in the embodiment;

FIG. 4 is a rear view of FIG. 1;

FIG. 5 is a schematic view of a first condition after welding;

FIG. 6 is a schematic view of a second condition after welding;

FIG. 7 is a schematic view of a third condition after welding;

FIG. 8 is a schematic view of a fourth condition after welding;

FIG. 9 is a schematic structural view of an airbag frame according to an embodiment;

fig. 10 is a schematic structural view of the ladder rib group in fig. 9;

fig. 11 is a rear view of the ladder rib group of fig. 9.

The components in the figures are numbered as follows:

wait to weld piece 1, terraced muscle group 2, opponent's piece 3, eye 4, first layer ladder muscle 5, second floor ladder muscle 6, third layer ladder muscle 7, fourth layer ladder muscle 8.

Detailed Description

The invention is described in further detail below with reference to the figures and the specific embodiments.

As shown in fig. 1, 2, 3, and 4, the vibration friction welding break-free depth detection structure of the present invention includes a to-be-welded part 1, in this embodiment, the to-be-welded part 1 is an outer lid of a glove box, the counterpart 3 is an inner lid of the glove box, a step rib group 2 is disposed on a welding surface of the to-be-welded part 1, the step rib group 2 includes a plurality of layers of step ribs, the step rib has a level greater than or equal to two, and the step rib of each level height represents evaluation of different welding depths.

In this embodiment, ladder muscle group 2 includes four layers of ladder muscle, is first layer ladder muscle 5, second floor ladder muscle 6, third layer ladder muscle 7 and fourth layer ladder muscle 8 in proper order, and first layer ladder muscle 5 is welding muscle contact point, and welding initiating position, second floor ladder muscle 6 are spacing under the welding, minimum welding depth position, and third layer ladder muscle 7 is welding median position, and theoretical welding position, fourth layer ladder muscle 8 are spacing on the welding, the degree of depth maximum.

In this embodiment, the step rib group 2 is disposed inside the to-be-welded member 1, the opponent member 3 of the to-be-welded member 1 is provided with a sight hole 4, and the welding condition of the step rib group 2 can be observed through the sight hole 4. The piece to be welded 1 is also provided with a sight hole 4 corresponding to the sight hole 4 on the opponent piece 3.

When the present embodiment is used, as shown in fig. 5, if the first layer of the stepped rib 5, the second layer of the stepped rib 6, the third layer of the stepped rib 7, and the fourth layer of the stepped rib 8 or the second layer of the stepped rib 6, the third layer of the stepped rib 7, and the fourth layer of the stepped rib 8 are visible, the welding NG fails (the welding fails to reach or exceed the welding start position of the first layer of the stepped rib 5, and the welding lower limit of the second layer of the stepped rib 6 is not reached).

As shown in fig. 6, if the third-layer step rib 7 and the fourth-layer step rib 8 are visible, the welding is slightly adjusted to the lower limit, and the welding is slightly adjusted to be deeper to approach the median (the welding exceeds the lower limit, the second-layer step rib 6, and the welding is not reached to the median, and the third-layer step rib 7).

As shown in fig. 7, if only the fourth-layer step rib 8 is visible, the welding is performed on the middle-position third-layer step rib 7, or the welding OK exceeds the middle-position third-layer step rib 7 and does not reach the upper limit fourth-layer step rib 8, the welding can be properly adjusted to be shallow and approach to the middle value, which is better (the welding is just in the middle value, or the welding exceeds the middle-position third-layer step rib 7 and does not reach the upper limit fourth-layer step rib 8).

As shown in fig. 8, if the step rib cannot be seen, the welding reaches or exceeds the fourth-layer step rib 8 at the upper limit, and the welding is too deep, the welding depth can be adjusted to be slightly shallow until the fourth-layer step rib 8 is seen and the welding depth approaches the median position, which is more preferable.

When the visual holes 4 are formed in the surface of the part in a proper area, for example, vibration friction welding of an air bag frame is performed, as shown in fig. 9, 10 and 11, a step rib group 2 can be selected to be specially added in other areas, for example, the step rib group 2 is positioned on the side surface of the welding surface of the part to be welded 1, and the welding rib state of the step rib group 2 is directly observed from the side surface.

According to different part structures, sizes and performance requirements, the number of the four-layer ladder structure can be changed according to requirements, three or two layers of ladders can be made to evaluate the welding depth, and the ladder size can be adjusted to a proper range according to the space requirements of the part structure.

According to the vibration friction welding break-in-free depth detection structure, the stepped structure is designed on the local part of the welding rib, the structure is distributed in different areas of a welding part, the welding depth value can be accurately and quickly judged to be an upper limit, a lower line or a middle value, compared with visual inspection, the welding depth inspection accuracy is greatly improved, the situation that unqualified parts flow to a client due to visual errors is avoided, and complaints of the client are reduced; and the opening design can more directly see the position of the welding depth of the welding rib at the step, the welding depth can be more accurately judged under the condition of avoiding forcible entry, the welding depth inspection efficiency is greatly improved, and the cost of forcible entry of parts on duty every day is saved.

Claims

1. The utility model provides a vibration friction welding exempts from to break and tears degree of depth detection structure open, includes and treats a welding (1), its characterized in that: step rib group (2) is arranged on the welding surface of the part to be welded (1), the step rib group (2) comprises a plurality of layers of step ribs, the levels of the step ribs are more than or equal to two, and the step ribs with each level height represent the evaluation of different welding depths.

2. The vibration friction welding breakage-free depth detection structure according to claim 1, characterized in that: the ladder rib group (2) is arranged inside the part to be welded (1), a sight hole (4) is formed in an opponent part (3) of the part to be welded (1), and the welding condition of the ladder rib group (2) can be observed through the sight hole (4).

3. The vibration friction welding breakage-free depth detection structure according to claim 2, characterized in that: the piece to be welded (1) is provided with a sight hole (4) corresponding to the sight hole (4) on the opponent piece (3).

4. The vibration friction welding breakage-free depth detection structure according to claim 1, characterized in that: ladder muscle group (2) include four layers of ladder muscle, be first layer ladder muscle (5), second floor ladder muscle (6), third layer ladder muscle (7) and fourth layer ladder muscle (8) in proper order, first layer ladder muscle (5) are the welding muscle contact point, second floor ladder muscle (6) are spacing down for the welding, third layer ladder muscle (7) are the welding median position, fourth layer ladder muscle (8) are spacing on the welding.

5. The vibration friction welding breakage-free depth detection structure according to claim 1, characterized in that: the step rib group (2) is positioned on the side surface of the welding surface of the part to be welded (1).