CN204505841U - Lens quality detection device in a kind of car light of ultrasonic bonding - Google Patents

Abstract

The utility model relates to automobile lamp technical field, lens quality detection device in the car light of specifically a kind of ultrasonic bonding, described checkout gear comprises product clamper, lamp body to be welded and interior lens are set in described product clamper, the bottom of described product clamper offers the through hole with the opening corresponding matching on lamp body, described checkout gear also comprises computer and is arranged at the push rod below described product clamper, force snesor and electric lifting mechanism, the end attachment force sensor of described push rod, described force snesor is arranged on the upper end of electric lifting mechanism, described force snesor is all connected computer with the output of electric lifting mechanism.Solve existing detection method and adopt artificial test mode of patting, easily cause the undetected of defective products and the low problem of Detection accuracy.

Description

Lens quality detection device in a kind of car light of ultrasonic bonding

Technical field

The utility model relates to automobile lamp technical field, the interior lens of especially ultrasonic bonding, lens quality detection device in the car light of specifically a kind of ultrasonic bonding.

Background technology

In car light manufactures, the plastic welding methods of adhesive that do not need widely applied at present mainly contains hot plate welding, friction welding, ultrasonic bonding, laser weld etc.Table 1 is depicted as the comparison of several Plastic Welding main method.As can be seen from Table 1, to some simple shape, the light fixture of small volume, the interior lens especially in headlight adopts ultrasonic bonding, not only can ensure welding quality but also manufacturing cost can be dropped to minimum.

Table 1 plastic welding methods compares

So, in headlamp lens welding in adopt ultrasonic bonding in a large number, ultrasonic welding technique utilizes ultrasonic wave high-frequency vibration to make two surface heats that plastics contact to melt, and in addition certain pressure, these two plastic parts are merged, through the process of pressurize cooling, these two plastic parts are firmly bonded together.

Ultrasonic welding machine primarily of supersonic generator, frame and transducer three part composition.The civil power of 220V50HZ is changed into the high frequency sinusoidal alternating current wave of 2000V20KHZ by supersonic generator, is then added to control device two ends.The effect of frame is contained on the work top of frame by weldment, and fix, and then under the effect of cylinder and electromagnetic valve, the soldering tip on transducer is pressed on weldment, carries out welding process.Transducer is made up of vibrations, modulator and soldering tip three parts.Under certain prestressed clamping, alternating electric field is added in the sub-the two poles of the earth of shake, converting electric energy is become the mechanical energy of 20KHZ by the piezoelectric ceramics in shake, and its amplitude is generally at 20 microns.

When ul-trasonic irradiation is when the contact surface of thermoplastic, can produce the high-frequency vibration of 20,000 times per second, this high-frequency vibration reaching certain amplitude, is delivered to welding zone by weldment ultrasonic energy, because the welding zone i.e. interface place acoustic resistance of two weldments is large, therefore can produce localized hyperthermia, again due to plastics poor thermal conductivity, can't distribute in time for the moment, be gathered in welding zone, cause the contact surface of two plastics to melt rapidly, after adding certain pressure, make it be fused into one.After ultrasonic wave fails, allow pressure durations a few second, make it solidify sizing, so just form a firm strand, reach the object of welding, weld strength can close to raw material intensity.

But because the process time of ultrasonic bonding is very short, within generally in 1 second, so the impact of be bullied piezoelectricity pressure and parts is very large, thus cause welding stability general, often have defective products to occur.Light then increase fraction defective and manufacturing cost, heavy then vehicle in night traveling process, once interior lens comes off, vehicle head lamp light shape sudden change, and likely cause traffic accident.

At present, although after welding, add artificial beating inspection, due to manpower factor, everyone beating dynamics is different, the beating dynamics of same person to each product is also different, if it is light just to cause beating dynamics, defective products will be undetected, thus flow out, if the dynamics of beating has weighed, likely weld good product and come off by beating on the contrary, certified products have become defective products.

Utility model content

Lens quality detection device in the car light that the purpose of this utility model is to provide ultrasonic bonding, this checkout gear is by arranging push rod, electric lifting mechanism and force snesor, automatically interior lens welding quality can be detected whether qualified, without the need to manually patting inspection, improve leak detection efficiency and accuracy of leak detection, adopt artificial test mode of patting in order to solve existing detection method, easily cause the undetected of defective products and the low problem of Detection accuracy.

For achieving the above object, scheme of the present utility model is: lens quality detection device in a kind of car light of ultrasonic bonding, described checkout gear comprises product clamper, lamp body to be welded and interior lens are set in described product clamper, the bottom of described product clamper offers the through hole with the opening corresponding matching on lamp body, described checkout gear also comprises computer and is arranged at the push rod below described product clamper, force snesor and electric lifting mechanism, the end attachment force sensor of described push rod, described force snesor is arranged on the upper end of electric lifting mechanism, described force snesor is all connected computer with the output of electric lifting mechanism.

The head end of described push rod is provided with anti-snag cushion.

Described checkout gear also comprises alarm and control device, the input of the data output end connection control device of described computer, and the control output end of described control device connects alarm.

The beneficial effect that the utility model reaches: whether the interior lens that the utility model can detect welding is automatically qualified, without the need to manually patting inspection, not only liberate manpower but also more scientific, detection efficiency is higher, meanwhile, when defective products being detected, alarm meeting alarm, by staff, defective products is picked, provide the total detection of product more accurately, significantly reduce the risk that defective products flows out.

Accompanying drawing explanation

Fig. 1 is structure principle chart of the present utility model;

Detailed description of the invention

Below in conjunction with accompanying drawing, the utility model is described in further detail.

As shown in Figure 1,1 is wave welding head of ultrasonic wave, and 2 is interior lens, and 3 is lamp body, and 4 is push rod, and 5 is force snesor, and 6 is electric lifting mechanism.

Interior lens 2 to be welded and lamp body 3 are arranged in product clamper 7, lamp body 3 and interior lens 2 is clamped by product clamper 7, product clamper 7 offers through hole, described through hole is corresponding with the opening on lamp body to be arranged, described interior lens 2 is positioned over the position of lamp body 3 opening, when carrying out ultrasonic bonding, wave welding head of ultrasonic wave 1 drops to interior lens 2 place, and internal lens 2 welds.

The below of described through hole is provided with push rod 4, and push rod 4 can vertical up-or-down movement, and the end attachment force sensor 5 of push rod 4, force snesor 5 is arranged on the upper end of electric lifting mechanism 6.After the welding of internal lens 2 completes, start testing process, electric lifting mechanism 6 rises push rod 4 jack-up, when push rod 4 is through the through hole bottom product clamper 7 and the opening on lamp body 3, and when touching interior lens 2, push rod 4 is continuously applied constant pressure to interior lens 2, and keep exerting pressure the time of setting, at the head end of push rod 4, anti-snag cushion is installed, like this can not the inner surface of lens 2 in snag.

In the course of exerting pressure of internal lens 2, force snesor 5 detects the pressure of push rod 4 end feedback in real time, and synchronous transfer is to computer, simultaneously, top lifting height when push rod 4 is touched interior lens 2 by electric lifting mechanism 6 feeds back to computer, computer is according to the top lifting height of push rod 4 terminal pressure received and electric lifting mechanism 6, and in judging, whether the weld strength of lens 2 and the depth of weld conform with the regulations.

Although lens 2 weld strength reaches requirement in sometimes judging according to the pressure of push rod 4 end feedback, but the depth of weld is undesirable, namely welded shallow or excessively dark, so, the top lifting height recorded when electric lifting mechanism 6 is less than or greater than the top lifting height of setting, is also judged as defective products at once.Therefore, only when the top lifting height of push rod 4 terminal pressure that force snesor 5 records and electric lifting mechanism 6 all meets the requirements, testing result is just qualified, otherwise, as long as have one against regulation, testing result is exactly underproof.

When push rod 4 promotes lens 2 in contact, the active force that push rod 4 is applied on interior lens 2 is constant, but due to the welded condition of interior lens 2, causes the pressure fed back on force snesor 5 to be vicissitudinous.Namely at the initial stage of exerting pressure, because the elastic deformation of interior lens 2 is larger, the pressure causing push rod 4 end to feed back is less, to exerting pressure the middle and later periods, because the elastic deformation of interior lens 2 significantly reduces, the pressure of push rod 4 end is caused sharply to rise, to exerting pressure latter stage, if the pressure of push rod 4 end feedback remains stable, then illustrate that weld strength is good; If the pressure of push rod 4 end feedback reduces suddenly, then in illustrating, the weld of lens 2 is backed down, and that is weld strength is inadequate.If the actual top lifting height of electric lifting mechanism 6 is greater than the top lifting height of setting, then illustrate that the depth of weld is excessively shallow, if actual top lifting height is less than the top lifting height of setting, then illustrate that the depth of weld is excessively dark, under both of these case, the depth of weld is all undesirable.

After testing process terminates, computer provides the information of judged result acceptance or rejection automatically, if testing result is qualified, then computer sends OK instruction to control device, the safety door that control device controls in product channels is opened automatically, if testing result is underproof, then computer sends NG instruction to control device, control device controls alarm and sends alarm, and control safety door and keep closed condition, in case defective products flows out, after only having operative employee to press tightly to stop button, product could be taken out, to remind operative employee that this product is for defective products.

Whether the utility model can detect interior lens 2 welding quality automatically qualified, without the need to manually patting inspection, avoid to pat and kick the beam or overweight produced problem, not only liberate manpower but also more scientific, detection efficiency is higher, by the detection of top lifting height two parameters of push rod 4 terminal pressure and electric lifting mechanism 6, when making the welding of interior lens must meet the requirement of weld strength and the depth of weld simultaneously, just qualified products can be judged as, guarantee that every the present invention is judged as that the product 100% of certified products is qualified, simultaneously, when defective products being detected, alarm meeting alarm, by staff, defective products is picked, defective products is avoided to flow out, provide the total detection of product more accurately, significantly reduce the risk that defective products flows out.

Claims (3)

1. lens quality detection device in the car light of a ultrasonic bonding, described checkout gear comprises product clamper, lamp body to be welded and interior lens are set in described product clamper, it is characterized in that: the bottom of described product clamper offers the through hole with the opening corresponding matching on lamp body, described checkout gear also comprises computer and is arranged at the push rod below described product clamper, force snesor and electric lifting mechanism, the end attachment force sensor of described push rod, described force snesor is arranged on the upper end of electric lifting mechanism, described force snesor is all connected computer with the output of electric lifting mechanism.

2. checkout gear according to claim 1, is characterized in that, the head end of described push rod is provided with anti-snag cushion.

3. checkout gear according to claim 1, is characterized in that, described checkout gear also comprises alarm and control device, the input of the data output end connection control device of described computer, and the control output end of described control device connects alarm.