TWI382164B - Tensile test device and tensile test method using the same - Google Patents

Description

Tensile testing device and its tensile testing method

The invention relates to a tensile testing device and a tensile testing method thereof, in particular to a tensile testing device suitable for a lens module and a tensile testing method thereof.

The lens module includes a lens barrel, a lens disposed in the lens barrel, a spacer ring, and a filter. The filter is usually disposed in the lens barrel in a dispensing manner. At present, there are a wide variety of glues that can be used, and the dispensing method is new. In order to select the appropriate glue and the corresponding dispensing method, it is necessary to test the bonding force between the filter and the lens barrel which are glued by different glues and dispensing methods, and the test is usually performed by a tensile test. The adhesion between the filter and the lens barrel is obtained by the tensile test measuring the minimum pulling force required to pull the filter away from the lens barrel.

The tensile test must ensure that the tensile force is always perpendicular to the surface of the filter. Otherwise, the minimum pulling force required to pull the filter away from the lens barrel cannot be accurately measured, resulting in deviation of the measurement results. The conventional tensile testing device mainly meets the verticality requirement of the tensile testing device through a complicated mechanical design, but this also leads to a large number of parts of the tensile testing device, which increases the equipment cost. Accordingly, the tensile testing procedure is also cumbersome due to the complex mechanical mechanisms of the device.

In view of this, it is necessary to provide a tensile testing device with a simple structure and low cost, and a simple tensile testing method.

The main object of the present invention is to provide a pulling force with a simple structure and low cost. Test device and a simple test method for pulling force.

In order to achieve the above object, a tensile testing device is provided for testing the bonding force between a lens barrel and a filter, and includes a tension meter having a measuring head, a bonding member having a bonding surface, and a connecting portion. A linear connector for the measuring head and the bonding member of the tension meter.

In addition, a tensile testing method for testing the bonding force between the lens barrel and the filter includes the following steps: providing a tensile testing device comprising a tension meter having a measuring head and having a bonding surface a bonding member and a wire connecting member for connecting the measuring head and the bonding member of the dynamometer; providing a fixing device disposed opposite to the measuring head of the dynamometer, fixing the lens barrel to be tested to the fixing Providing a curable adhesive, applying the curable adhesive to the surface of the filter; moving the bonding member to bond the bonding surface against the surface of the filter; curing the curable adhesive The dynamometer is moved in a direction perpendicular to the surface of the filter; the reading of the dynamometer is read when the filter is detached from the lens barrel, and the result is obtained.

The tensile testing device of the invention has few parts, simple mechanical structure and low equipment cost. The lens module tensile test method using the tensile test device is simple, and the production efficiency can be improved.

The tensile testing device of the present invention can be used to test the bonding force between the lens barrel and the filter. Referring to FIG. 1 , a tensile testing device 100 according to a preferred embodiment of the present invention includes a tension meter 110 having a measuring head 111 , a bonding member 120 having a bonding surface 121 , and a measurement for connecting the tension meter 110 . The head 111 and the linear connector 130 of the bonding member 120.

The dynamometer 110 can adopt an index dynamometer or a digital dynamometer. In this embodiment, a digital dynamometer is used, and the reading is convenient and fast.

The bonding member 120 is used for bonding with the object to be tested, so as to place a force point on the object to be measured, so that the tension meter 110 can apply a pulling force to the object to be tested. The bonding member 120 of the embodiment has a cylindrical shape, and one end surface thereof is a bonding surface 121. Of course, the bonding member can also be of other shapes as long as the bonding member used has a smooth bonding surface. The material of the bonding member 120 may be plastic, rubber or steel. In this embodiment, a steel material is used.

The wire connector 130 may be a fishing line, a silk light, a polyester thread or other high toughness wire. In this embodiment, a fishing line is used.

Opening a hole in the center of the opposite end surface 122 of the bonding surface 121 of the bonding member 120, the fishing line penetrates the hole and bonds the fishing line and the bonding member 120 with super glue, thereby realizing the fishing line and the bonding member. 120 connection. Of course, other connection manners may be used. For example, a hook is attached to the center of the opposite end surface 122 of the bonding surface 121 of the bonding member 120, and the fishing line is wound and tied to the hook.

During the tensile test, the force gauge 110 must be moved in a single direction so that the force gauge 110 does not change direction throughout the testing process. The object can be achieved by providing a robot arm 140 coupled to the dynamometer 110, of course Other settings may be used to move the dynamometer 110 in one direction, such as adding a guiding mechanism for guiding the direction of movement of the dynamometer 110.

Next, a tensile test method using the tensile test apparatus of the present invention for testing the bonding force between the lens barrel 200 and the filter 210 will be described with reference to FIG. The method includes the following steps: providing a tensile testing device 100 comprising a tension gauge 110 having a measuring head 111, a bonding member 120 having a bonding surface 121, and a measuring head 111 for connecting the tension gauge 110 with a linear connecting member 130 of the bonding member 120; a fixing device 300 disposed opposite the measuring head 111 of the tension meter 110 is provided, and the lens barrel 200 to be tested is fixed to the fixing device 300 to provide a curable adhesive 150, the curable adhesive 150 is applied to the surface 211 of the filter 210; the bonding member 120 is moved to press the bonding surface 121 against the surface 211 of the filter 210; curing the curable adhesive 150; moving the dynamometer in a direction perpendicular to the surface 211 of the filter 210; reading the tensometer when the filter 210 is detached from the lens barrel 200, and the result is obtained.

The fixing device 300 includes a base 310 and a cylindrical upper cover 320 for arranging the lens barrel. One end of the upper cover 320 is screwed to the base 310, and the other end thereof is internally extended with a stopping portion 321 for pressing against the outer edge of the lens barrel to fix the lens barrel 200. Separate first when used The base 310 and the upper cover 320 are placed on the base 310, and one end of the upper cover 320 without the stop portion 321 is inserted into the lens barrel 200 and screwed onto the base 310, and the screw is continuously screwed into the upper cover 320. The stopper portion 321 presses against the inner edge of the lens barrel, thereby fixing the lens barrel 200. Of course, the lens barrel 200 can be fixed by other fixing means, such as various jigs.

The curable adhesive 150 is made of a UV curable adhesive. Of course, other curable adhesives can also be used. The amount of the ultraviolet curable adhesive is appropriate. Preferably, when the bonding surface 121 of the bonding member 120 abuts against the surface 211 of the filter 210, the thickness of the ultraviolet curing adhesive between the bonding surface 121 and the surface 211 of the filter 210 is less than 25 micrometers. The ultraviolet curing glue is cured by ultraviolet light source, and the ultraviolet light source is a high pressure mercury lamp. The distance between the mercury lamp and the surface 211 of the filter 210 is 5-20 cm, and the irradiation time is 1-20 seconds. In this embodiment, the high pressure mercury lamp is 10 cm from the surface 211 of the filter 210, and the irradiation time is 15 seconds.

The dynamometer 110 is moved by the robot arm 140, and the robot arm 140 is disposed such that its moving direction is perpendicular to the surface 211 of the filter 210. As such, the force gauge 110 can be moved in a direction perpendicular to the surface 211 of the filter 210.

Since the fixing device and the measuring head of the dynamometer are disposed opposite each other, the lens barrel is mounted in the fixing device, so that the measuring head of the dynamometer is directly opposite to the lens barrel. The dynamometer moves in a direction perpendicular to the surface of the filter. Thus, the tensile force applied by the dynamometer is always perpendicular to the surface of the filter throughout the test, satisfying the verticality requirement required for the tensile test, and the deviation of the measurement result is small.

The tensile testing device of the invention has few parts and a simple mechanical structure, so the setting is low cost. The lens module tensile test method using the tensile test device is simple, and the production efficiency can be improved.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by the person skilled in the art of the present invention should be included in the following claims.

100‧‧‧ tensile testing device

150‧‧‧curable adhesive

110‧‧‧ 拉力计

200‧‧‧tubes to be tested

111‧‧‧Measurement head

210‧‧‧Filter

120‧‧‧bonding parts

211‧‧‧ surface

121‧‧‧ bonded surface

300‧‧‧Fixed devices

122‧‧‧ end face

310‧‧‧Base

130‧‧‧Line connectors

320‧‧‧上盖

140‧‧‧ Robotic arm

321‧‧‧stops

1 is a perspective view of a tensile testing device according to a preferred embodiment of the present invention; and FIG. 2 is a schematic plan view showing the working state of the tensile testing device of FIG. 1.

100‧‧‧ tensile testing device

121‧‧‧ bonded surface

110‧‧‧ 拉力计

122‧‧‧ end face

111‧‧‧Measurement head

130‧‧‧Line connectors

120‧‧‧bonding parts

140‧‧‧ Robotic arm

Claims (9)

A tensile testing device for testing the bonding force between a lens barrel and a filter, the tensile testing device comprising a tension meter having a measuring head, a bonding member having a bonding surface, and a connecting force for connecting the pulling force a linear connecting member of the measuring head and the bonding member and a fixing device disposed opposite to the measuring head of the tension meter; the fixing device comprises a base and a cylindrical upper cover for sleeved the lens barrel; One end of the upper cover is screwed to the base, and the other end is internally extended with a stop for blocking the outer edge of the lens barrel to fix the lens barrel. The tensile testing device of claim 1, wherein the wire connector is a fishing line, a silk light or a polyester thread. The tensile testing device of claim 1, wherein the tension meter is a pointer type dynamometer or a digital display type dynamometer. The tensile testing device of claim 1, wherein the tensile testing device further comprises a mechanical arm coupled to the tension gauge for moving the tension gauge in a single direction. A tensile testing method for testing the bonding force between a lens barrel and a filter, comprising the steps of: providing a tensile testing device comprising a tension meter having a measuring head, a bonding member having a bonding surface, and a wire connecting member for connecting the measuring head and the bonding member of the tension meter; providing a fixing device disposed directly opposite to the measuring head of the tension meter, fixing the lens barrel to be tested to the fixing device; a curable adhesive coating the surface of the filter on the surface of the filter; Moving the bonding member to press the bonding surface against the surface of the filter; curing the curable adhesive; moving the force gauge perpendicular to the surface of the filter; and pulling the filter when the filter is removed from the lens barrel Taking the reading, the result is obtained; wherein the fixing device comprises a base and a cylindrical upper cover for arranging the lens barrel; one end of the upper cover is screwed to the base, and the other end is internally extended a stopping portion for blocking the outer edge of the lens barrel to fix the lens barrel. The tensile test method of claim 5, wherein the wire connector is a fishing line, a silk light or a polyester thread. The tension test method according to claim 5, wherein the tension meter adopts an index type tension meter or a digital type tension meter. The tensile testing method of claim 5, wherein the tensile testing device further comprises a mechanical arm coupled to the tension gauge for moving the force gauge in a direction perpendicular to a surface of the filter. The method for testing a tensile force according to claim 5, wherein the curable adhesive is a UV curable adhesive.