CN113865983A

CN113865983A - Laser welding spot detection equipment and welding spot detection method

Info

Publication number: CN113865983A
Application number: CN202010622393.5A
Authority: CN
Inventors: 梁涛; 李海清
Original assignee: Oppo Chongqing Intelligent Technology Co Ltd
Current assignee: Oppo Chongqing Intelligent Technology Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-12-31

Abstract

The invention discloses laser welding spot detection equipment and a welding spot detection method, wherein the laser welding spot detection equipment comprises a detection table, a clamping assembly, a first driving mechanism and an attraction part, the clamping assembly is arranged on a table board of the detection table, the clamping assembly is used for clamping and fixing a product to be detected, the first driving mechanism is arranged on the detection table, the attraction part is in driving connection with the first driving mechanism, and the attraction part is used for being attracted with a first welding spot on the product to be detected under the driving of the first driving mechanism and applying preset pressure to the first welding spot under the driving of the first driving mechanism. By adopting the scheme of the embodiment, the welding quality of the first welding spot of the product to be detected can be quickly judged, manual visual inspection is not needed, the detection efficiency is high, the detection precision is high, and therefore defective products can be effectively prevented from flowing into the market.

Description

Laser welding spot detection equipment and welding spot detection method

Technical Field

The invention relates to the technical field of device detection, in particular to laser welding point detection equipment and a welding point detection method.

Background

Currently, laser welding is widely used in industry because of its advantages such as concentrated energy and fast welding speed. In the related technology, the quality detection of welding spots of welded products is mainly manual visual detection, after laser welding, the welded products are placed under a magnifier, and a detector visually detects the surfaces of the welding spots through the magnifier to observe whether obvious failure characteristics exist on the surfaces of the welding spots. However, the detection method is not high in detection efficiency on one hand, and on the other hand, the manual visual detection can only detect the products with obvious defects, but the products with insufficient welding strength and welding spot surface states meeting the requirements cannot be effectively detected, the detection precision is low, defective products are easy to flow into the market, and the service life of the products is affected.

Disclosure of Invention

The embodiment of the invention discloses laser welding spot detection equipment and a welding spot detection method, which can effectively improve the detection efficiency and the detection precision.

In order to achieve the above object, in a first aspect, the present invention discloses a laser welding spot detection apparatus including

A detection table;

the clamping assembly is arranged on the table surface of the detection table and is used for clamping and fixing a product to be detected;

the first driving mechanism is arranged on the detection table; and

the suction part is in driving connection with the first driving mechanism and is used for being driven by the first driving mechanism to be sucked with a first welding spot on a product to be detected and applying preset tension to the first welding spot under the driving of the first driving mechanism.

In a second aspect, the invention discloses a welding spot detection method using laser welding spot detection equipment,

the laser welding spot detection equipment comprises a detection table, a clamping assembly, a first driving mechanism and an attraction part, wherein the clamping assembly is arranged on the table surface of the detection table, and the first driving mechanism is arranged on the detection table and is in driving connection with the attraction part; the welding spot detection method comprises the following steps:

placing a product to be detected on the clamping assembly and clamping and fixing the product by the clamping assembly;

controlling the first driving mechanism to drive the suction part to move along a first direction to be in contact connection with a first welding point of the product to be detected;

controlling the first driving mechanism to drive the attraction part to move along a second direction so that the attraction part applies a preset pulling force to the first welding point;

wherein the first direction is opposite to the second direction.

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

according to the laser welding point detection equipment and the welding point detection method provided by the embodiment of the invention, the first driving mechanism and the attraction part are arranged, the first driving mechanism is used for driving the attraction part to be attracted with the first welding point on the product to be detected and applying the preset tension to the first welding point under the driving of the first driving mechanism, so that when the first welding point is separated from the product to be detected under the action of the preset tension applied by the attraction part, the insufficient welding strength of the first welding point on the product to be detected can be judged, and if the first welding point is not separated from the product to be detected under the action of the preset tension applied by the attraction part, the sufficient welding strength of the first welding point on the product to be detected can be judged. By adopting the scheme, the welding strength and the welding quality of the first welding spot of the product to be detected can be quickly judged by utilizing the cooperation of the suction part and the first driving mechanism, the manual visual inspection is not needed, the detection efficiency is high, and the detection precision is high.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a laser welding spot detection apparatus according to an embodiment of the disclosure;

FIG. 2A is a schematic front view of a product to be inspected according to an embodiment of the disclosure;

FIG. 2B is a schematic diagram illustrating a back side structure of a product to be inspected according to an embodiment of the disclosure;

FIG. 3 is a schematic structural diagram of a detection table of the laser welding spot detection apparatus according to an embodiment of the disclosure;

FIG. 4 is a schematic diagram illustrating a backside structure of the laser welding spot detection apparatus according to an embodiment of the disclosure;

FIG. 5 is a schematic structural diagram of a laser welding spot detection apparatus (omitting a detection table) according to an embodiment of the disclosure;

FIG. 6 is a schematic structural diagram of a load bearing member according to one disclosed embodiment;

FIG. 7 is a schematic view of the backside structure of FIG. 5;

FIG. 8 is a schematic structural diagram of a first driving mechanism, a carrier member, and a connecting member according to the first disclosure;

fig. 9 is a partial enlarged view at a in fig. 8;

FIG. 10 is a schematic diagram illustrating a clamp assembly according to one disclosed embodiment;

fig. 11 is a partial enlarged view at B in fig. 10;

FIG. 12 is a flowchart illustrating a solder joint detection method according to a second embodiment of the disclosure.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

The technical solution of the present invention will be further described with reference to the following embodiments and the accompanying drawings.

Example one

Referring to fig. 1, fig. 1 is a schematic structural diagram of a laser welding spot detection apparatus according to an embodiment of the present invention. The laser welding point detection device disclosed by the embodiment is mainly used for detecting the strength of the welding point of a welded product to be detected (such as a battery tab and a charger) so as to ensure the welding quality of the product. Specifically, the laser welding spot detection apparatus 10 includes a detection table 11, a clamping assembly 12, a first driving mechanism 13, and a suction member 14. The clamping assembly 12 is disposed on the top of the inspection table 11, and the clamping assembly 12 is used for clamping and fixing a product 30 to be inspected (as shown in fig. 2A). The first driving mechanism 13 is arranged on the detection table 11, the suction part 14 is in driving connection with the first driving mechanism 13, and the suction part 14 is used for being sucked with a first welding point on the product 30 to be detected under the driving of the first driving mechanism 13 and applying a preset pressure to the first welding point under the driving of the first driving mechanism 13.

It can be understood that the preset tension may be a preset tension, and the preset tension may be set according to a tension that can be borne when the welding quality of the first welding point on the product 30 to be detected meets the requirement. That is, the pulling force applied when the welding strength of the first welding spot on the product 30 to be detected is sufficient does not make the first welding spot separate from the product 30 to be detected, and the pulling force applied when the welding strength of the first welding spot is insufficient makes the first welding spot separate from the product 30 to be detected. For example, the preset pulling force may be set to, for example, 7N, 10N, etc., and the specific value may be set according to the actual welding quality requirement, which is not particularly limited in this embodiment.

By adopting the laser welding point detection device 10 of the embodiment, the attraction part 14 is attracted with the first welding point on the product 30 to be detected and applies a preset pulling force to the first welding point, because the product 30 to be detected is clamped and fixed on the detection table 11 by the clamping component 12, when the first welding point is separated from the product 30 to be detected under the action of the preset pulling force of the attraction part 14, the welding strength of the first welding point is insufficient, and the welding quality of the first welding point of the product 30 to be detected does not meet the requirement; and when the first welding point is not separated from the product 30 to be detected under the action of the preset pulling force of the attraction part 14, the welding strength of the first welding point is enough, and the welding quality of the first welding point of the product 30 to be detected meets the requirement. Therefore, by adopting the scheme of the embodiment, the welding quality of the first welding spot of the product 30 to be detected can be quickly judged, manual visual inspection is not needed, the detection efficiency is high, the detection precision is high, and therefore defective products can be effectively prevented from flowing into the market.

As can be seen from the foregoing, the product 30 to be detected can be welded to a battery tab or welded to a charging interface of a charger, and the embodiment takes the product 30 to be detected as the charging interface of the charger as an example, that is, the laser welding spot detection apparatus 10 of the embodiment is used for detecting the welding quality of the charging interface of the charger. Illustratively, as shown in fig. 2A and 2B, fig. 2A shows a front schematic view of the charger, and fig. 2B shows a back schematic view of the charger. When the charger is clamped and fixed on the clamping component 12, the front surface of the charger is clamped and fixed towards the clamping component 12, and the back surface of the charger is towards the attraction part 14. Specifically, the front surface of the charger is provided with a charging interface, the charging interface is provided with a charging pin, and in order to fix the charging pin on the charger, the charging pin needs to be welded, that is, a welding spot can be formed on the back surface of the charger corresponding to the charging pin, so as to fix the charging pin on the charger. In other words, the first solder point may be a position of the back surface of the charger corresponding to the charging pin, or the first solder point may be the charging pin.

It is understood that, of course, the first solder point may be other locations of the charger that are electrically connected to the charging pin, and the locations are also soldering locations. Specifically, for convenience of description, the charging pin is defined as the second solder 32, the third solder 33 is formed on the back surface of the charger at a position corresponding to the charging pin, and since the charger needs to ensure sufficient soldering of the charging pin, continuous solder, mainly the third solder 33 formed at the position corresponding to the charging pin, and the first solder 31 which is continuous with the third solder 33 and electrically connected to one side of the third solder 33, are formed on the back surface of the charger.

In some embodiments, as shown in fig. 3, the inspection table 11 may have a square table shape, and the quality inspection of the solder joints of the product 30 to be inspected can be performed on the table surface 110 of the inspection table 11. The top 110 of the inspection table 11 is respectively provided with a first side plate 111 and a second side plate 112, the first side plate 111, the second side plate 112 and the top 110 of the inspection table 11 enclose a detection space 111b, and the clamping assembly 12 can be located in the detection space. Optionally, the first side plate 111 and the second side plate 112 may be square plates, and the first side plate 111 and the second side plate 112 may respectively extend from one end to the other end of the table top 110 of the detection table 11. The detection space can be formed by respectively arranging the first side plate 111 and the second side plate 112 at two sides of the table top 110 of the detection table 11, so that the space for detecting the product 30 to be detected is more concentrated.

Further, the first side plate 111 and the second side plate 112 are respectively provided with

sensing devices

111a and 112a, the

sensing devices

111a and 112a are electrically connected to the first driving mechanism 13, the

sensing devices

111a and 112a are used for sensing whether an object enters the detection space 111b, and the

sensing devices

111a and 112a are further used for sending a signal to the first driving mechanism 13 to stop driving the first driving mechanism 13 when sensing that the object enters the detection space 111 b. In particular, the

sensing devices

111a, 112a may be infrared sensors or ultrasonic sensors, for example infrared sensors. As can be seen from the foregoing, the first driving mechanism 13 needs to drive the suction component 14 to move to the position of the product 30 to be detected and to suck the suction component with the first welding point 31 of the product 30 to be detected, so that, in the detection process, in order to avoid the situation that the detection personnel accidentally stretches their hands into the detection space 111b or the situation that the detection personnel are injured due to the fact that the first driving mechanism 13 drives the suction component 14 to press on the hands of the detection personnel during the process of clamping and fixing the product 30 to be detected, the infrared sensor can detect the hands of the detection personnel, and when the detection personnel stretch into the detection space 111b, the infrared sensor can send a signal to the first driving mechanism 13, the first driving mechanism 13 can stop driving the suction component 14 to move, thereby avoiding the situation that the suction component 14 presses on the hands of the detection personnel to be injured. It is understood that, in other embodiments, an alarm may be disposed on the detection platform 11, and when the infrared sensor detects that the hand of the detection person extends into the detection space 111b, the infrared sensor may send a signal to the alarm synchronously, so that the alarm may send out an alarm to remind the detection person.

Further, the sensing device 111a of the first side plate 111 and the sensing device 112a of the second side plate 112 are respectively disposed on the mutually facing surfaces of the first side plate 111 and the second side plate 112, in other words, the sensing device 111a on the first side plate 111 and the sensing device 112a of the second side plate 112 are disposed opposite to each other, and the sensing device 111a of the first side plate 111 and the sensing device 112a of the second side plate 112 are both disposed at positions of the first side plate 111 and the second side plate 112 close to the clamping assembly 12, so that the detection can be performed quickly when the detection person enters the detection space 111b with both hands.

In some embodiments, the suction member 14 may include any one of an adhesive tape, a suction cup, or a magnet, so that the first welding point 31 can be sucked when being in contact with the first welding point 31, and thus, it may be advantageous to apply a predetermined pulling force to the first welding point 31. It will be appreciated that in other embodiments, the engaging member 14 can be a pull-fit and/or a stretch-fit.

For convenience of description, the present embodiment will be described by taking the attraction member 14 as an adhesive tape as an example.

In some embodiments, as shown in fig. 4 to fig. 6, the engaging member 14 is an adhesive tape (for convenience of description, the engaging member 14 is referred to as the adhesive tape 14), the laser welding point detecting apparatus 10 further includes a carrying member 15, the carrying member 15 is configured to carry the adhesive tape 14, and the carrying member 15 is in driving connection with the first driving mechanism 13. The bearing part 15 is used for contacting with the product 30 to be detected under the driving of the first driving mechanism 13, so that the adhesive tape 14 contacts with and attracts the first welding point 31 of the product 30 to be detected. Specifically, the bearing member 15 may be a block structure, one end of which is drivingly connected to the first driving mechanism 13, and the other end of which is used for bearing the adhesive tape 14. In view of ensuring that the bearing member 15 and the adhesive tape 14 can always be adhered during the contact of the adhesive tape 14 with the first welding point 31 of the product 30 to be detected, the surface of the bearing member 15 for bearing the adhesive tape 14 can be a plane, so that the contact area of the bearing member 15 and the adhesive tape 14 can be increased, and the adhesion reliability of the two can be ensured. In other words, the adhesive tape 14 may be a double-sided adhesive tape 14, one side of which may be adhered to the carrier member 15, and the other side of the adhesive tape 14 may be used for adhering the first welding points 31 of the product 30 to be detected. When the product 30 to be detected is detected, the first driving mechanism 13 drives the bearing part 15 to move relative to the detection table 11, so that the bearing part 15 can move to a position close to the product 30 to be detected and is pressed on the product 30 to be detected, at this time, the adhesive tape 14 arranged on the bearing part 15 can be aligned to the first welding point 31 of the product 30 to be detected and is bonded on the first welding point 31 of the product 30 to be detected under the pressing action of the bearing part 15, then the bearing part 15 is driven to ascend through the first driving mechanism 13, so that the bearing part 15 is separated from the product 30 to be detected, therefore, the adhesive tape 14 exerts preset tension on the first welding point 31 by utilizing the ascending of the bearing part 15, and therefore, the welding quality of the first welding point 31 of the product 30 to be detected can be detected.

It is understood that when the adhesive tape 14 is used as the attraction part 14, the bonding width of the adhesive tape 14 may be set according to the width of the first welding point 31 to be bonded, for example, the adhesive tape 14 may be 3.0mm wide, as long as the adhesive tape 14 can be ensured to completely adhere to the first welding point 31, and the embodiment is not particularly limited thereto.

Further, in order to facilitate positioning of the adhesive tape 14, a positioning groove 151 may be disposed on a surface of the carrier member 15 for supporting the adhesive tape 14, and the adhesive tape 14 may be adhered to the positioning groove 151, so as to position the position of the adhesive tape 14 on the carrier member 15, and facilitate replacement of the adhesive tape 14 after testing.

Further, the bearing part 15 can be an elastic part or a flexible part, and the elastic part or the flexible part can prevent the bearing part 15 from damaging the product to be tested in the process of pressing the product to be tested. In other words, the bearing part 15 can be made of a material with a lower hardness than the product to be tested, for example, the bearing part 15 can be made of a silicone block or a rubber block.

In some embodiments, the laser welding spot detecting apparatus 10 further includes a lifting plate 16, a tape unwinding portion 160, a tape winding portion 161, and a second driving mechanism 162, where the tape unwinding portion 160 and the tape winding portion 161 are disposed on the lifting plate 16 at intervals, the tape unwinding portion 160 is used for unwinding the tape 14, the tape winding portion 161 is used for winding the tape 14, the second driving mechanism 162 is disposed on the detecting platform 11 and is in driving connection with the lifting plate 16, and the second driving mechanism 162 is used for driving the lifting plate 16 to lift relative to the detecting platform 11, so that the lifting plate 16 drives the tape 14 to approach or be away from the product 30 to be detected. Specifically, the lifting plate 16 is arranged in the detection space 111b in a lifting manner, and the lifting plate 16 is perpendicular to the table surface 110 of the detection table 11. The tape unwinding part 160 and the tape winding part 161 are respectively provided at both sides of the lifting plate 16, and the tape winding part 161 and the tape unwinding part 160 are provided at an interval for winding the tape 14. In other words, the adhesive tape 14 of the present embodiment may be a strip-shaped adhesive tape, which can be wound around the tape winding portion 161 and the tape unwinding portion 160, so that the winding action of the tape winding portion 161 and the tape unwinding portion 160 can be utilized to facilitate the adjustment of the position of the adhesive tape 14 relative to the product 30 to be detected, so that after one section of the adhesive tape 14 tests one product 30 to be detected, the one section of the adhesive tape 14 can be wound by the tape winding portion 161 and the tape unwinding portion 160, and then the next section of the adhesive tape 14 can be aligned with the position of the product 30 to be detected again, so as to ensure that the adhesive tape 14 for matching with each product 30 to be detected is a new adhesive tape, and ensure the adhesiveness of the adhesive tape 14 to the first welding point 31 of the product 30 to be detected.

Illustratively, as shown in fig. 5, the left side of the lifting plate 16 is a tape winding portion 161, and the right side of the lifting plate 16 is a tape unwinding portion 160. It is understood that, in other embodiments, the tape winding portion 161 may be disposed on the right side of the lifting plate 16, and the tape unwinding portion 160 may be disposed on the left side of the lifting plate 16, as long as the tape winding portion 161 and the tape unwinding portion 160 are disposed at an interval and can be used for winding the adhesive tape 14, which is not particularly limited in this embodiment.

Further, the tape winding portion 161 and the tape unwinding portion 160 have the same structure, and the specific structure will be described by taking the tape winding portion 161 as an example. The tape winding part 161 includes a first rotating plate 161a, a second rotating plate 161b, and a winding shaft 161c connected between the first rotating plate 161a and the second rotating plate 161b, the winding shaft 161c is used for winding the tape 14, and the first rotating plate 161a and the second rotating plate 161b are respectively located at two ends of the winding shaft 161c to prevent the tape 14 from being separated from the winding shaft 161 c. It is understood that, in other embodiments, the tape winding portion 161 may only include the winding shaft 161c as long as the tape 14 can be wound, and the embodiment is not particularly limited thereto.

In some embodiments, the second driving mechanism 162 may be supported and fixed on the table top 110 of the inspection table 11 by a supporting frame 162a, and the second driving mechanism 162 may be located on a side of the lifting plate 16 facing away from the tape winding portion 161 and the tape unwinding portion 160. In this way, during the lifting and lowering of the lifting and lowering plate 16, the tape winding portion 161 and the tape unwinding portion 160 can be lifted and lowered together by the lifting and lowering plate 16, so as to lift and lower the tape 14 together.

Further, the second driving mechanism 162 may be a motor screw driving mechanism, that is, the second driving mechanism 162 includes a motor fixed on the supporting frame 162a and a screw in transmission connection with the motor, and the lifting plate 16 may be capable of performing a lifting motion under the action of the screw by the cooperation of the slider and the screw. It should be understood that, in other embodiments, the second driving mechanism 162 may also be a driving mechanism such as an air cylinder or a hydraulic cylinder, as long as the second driving mechanism can drive the lifting plate 16 to perform a linear lifting motion, which is not particularly limited in this embodiment.

In some embodiments, in order to achieve the rotation of the tape winding part 161 and the tape winding-out part 160 to adjust the position of the tape 14, the laser welding point detection apparatus 10 further includes a third driving mechanism 17, the third driving mechanism 17 is disposed on a side of the lifting plate 16 facing away from the tape winding-out part 161 or the tape winding-out part 160, and the third driving mechanism 17 is in driving connection with the tape winding-out part 160 or the tape winding-out part 161 for driving the tape winding-out part 160 or the tape winding-out part 161 to move so as to adjust the bonding position of the tape 14. Specifically, the third driving mechanism 17 may be a motor, and the third driving mechanism 17 may be fixed at a position of the lifting plate 16 corresponding to the adhesive tape winding part 161, so that the third driving mechanism 17 may drive the adhesive tape winding part 161 to rotate. More specifically, when the third driving mechanism 17 is connected to the tape winding portion 161, a through hole may be formed in the position of the lifting plate 16 corresponding to the winding shaft 161c of the tape winding portion 161, and the driving shaft of the third driving mechanism 17 may extend from the other side of the lifting plate 16 to be connected to the winding shaft 161c of the tape winding portion 161 through the through hole, so as to drive the winding shaft 161c to move, so that in the moving process of the tape winding portion 161, the tape 14 is moved by the tape winding portion 161 winding the tape 14, and the tape winding portion 160 may be driven to rotate, so as to adjust the bonding position of the tape 14.

Further, in order to tension the adhesive tape 14 and prevent the adhesive tape 14 from being unable to effectively adhere to the first welding point 31 due to insufficient tension, one or more guide rollers 164 may be rotatably disposed on the lifting plate 16, the one or more guide rollers 164 may be disposed between the adhesive tape winding portion 161 and the adhesive tape unwinding portion 160, and the one or more guide rollers 164 may be configured to wind the adhesive tape 14. Illustratively, the number of the guide rollers 164 is four, and the guide rollers 164 are symmetrically arranged on the lifting plate 16 two by two, and the two guide rollers 164 located on the same side of the lifting plate 16 are spaced apart from each other. By adopting the mode of arranging the four guide rollers 164, the wrapping connection of the adhesive tape 14 can be further guided, on one hand, the bonding position of the adhesive tape 14 can be more easily adjusted, on the other hand, the adhesive tape 14 can be further tensioned, and the adhesive tape 14 is ensured to be always in a tensioned state, so that the first welding point 31 of the product 30 to be detected can be bonded conveniently. It is understood that in other embodiments, the number of the guiding rollers 164 can be set according to the position of the tape winding portion 161 and the tape unwinding portion 160 on the lifting plate 16 to the product 30 to be detected, for example, if the tape winding portion 161 and the tape unwinding portion 160 are closer to the product 30 to be detected, the number of the guiding rollers 164 can be smaller, for example, one, two, or three, etc. When the tape winding portion 161 and the tape unwinding portion 160 are far from the product 30 to be detected, the number of the guide rollers 164 may be increased, for example, four as described above or five, six, or more.

Further, the guiding roller 164 may be a roller-like structure, and a bearing may be disposed therein to facilitate rolling, so that during the position adjustment of the adhesive tape 14, the guiding roller 164 may rotate relative to the lifting plate 16 due to the movement of the adhesive tape 14, so that the guiding roller 164 can guide and tension the adhesive tape 14.

In some embodiments, the laser welding point detecting apparatus 10 further includes a controller electrically connected to the third driving mechanism 17, one of the tape winding portion 161, the tape unwinding portion 160, and the at least one guiding roller 164 is provided with a sensor 164a, the sensor 164a is configured to sense a rotation angle of a component where the sensor 164a is located and send an electrical signal to the controller, the controller is configured to compare the electrical signal with the rotation angle of the third driving mechanism 17 to obtain a comparison result, and the controller is further configured to control the third driving mechanism 17 to drive the tape unwinding portion 160 or the tape winding portion 161 to move when the comparison result is inconsistent with a preset result. Illustratively, a sensor 164a is disposed on one of the guide rollers 164 adjacent to the tape unwinding part 160, the sensor 164a may be exemplified as an angle identifier, and the sensor 164a may be configured to sense a rotation angle of the guide roller 164 and transmit an electrical signal to the controller. For example, after testing a product 30 to be tested, the position of the adhesive tape 14 needs to be adjusted to ensure that the viscosity of the adhesive tape 14 can adhere to the first welding point 31 of the next product 30 to be tested, and then the third driving mechanism 17 is controlled to drive the adhesive tape winding portion 161 to rotate, so as to adjust the adhering position of the adhesive tape 14, in this process, the adhesive tape 14 moves under the action of the adhesive tape winding portion 161 and the adhesive tape unwinding portion 160, so as to drive the guide roller 164 to rotate, and the sensor 164a can sense the rotation angle of the guide roller 164, so as to determine whether the rotation angle is matched with the preset rotation angle. In other words, when the sensor 164a senses the rotation angle of the guiding roller 164, the sensor 164a can sense the rotation angle of the guiding roller 164 and send an electrical signal to the controller, the controller can compare the rotation angle of the guiding roller 164 with the rotation angle of the tape winding portion 161 driven by the third driving mechanism 17, if the comparison result is inconsistent, it indicates that the tape winding portion 161 and the guiding roller 164 are not rotated to the preset angle, and the controller can control the third driving mechanism 17 to drive the tape winding portion 161 to move until the rotation angle matches the preset rotation angle. By adopting the mode, the bonding position of the adhesive tape 14 can be effectively ensured to be adjusted, so that the adhesive tapes 14 used for testing the products 30 to be detected are all new adhesive tapes 14, have better viscosity, and can be bonded with the first welding points 31 of the products 30 to be detected.

It is to be understood that the sensor 164a described above may also be an encoder. The controller may be integrated on the inspection table 11, for example, the controller may be integrated on a circuit board disposed on the inspection table 11, and may control not only the third driving mechanism 17 but also the first driving mechanism 13 and the second driving mechanism 162.

In some embodiments, as shown in fig. 7 to 9, the first driving mechanism 13 may be disposed on the lifting plate 16, so that the first driving mechanism 13 may be used to drive the carrying member 15 to perform a lifting motion relative to the lifting plate 16. Specifically, the first driving mechanism 13 may be a motor screw mechanism, the motor 131 of the first driving mechanism 13 may be disposed at the top of the lifting plate 16, the screw 132 of the first driving mechanism 13 may extend downward from the top of the lifting plate 16 to be close to the bottom of the lifting plate 16, and the bearing member 15 is slidably connected to the screw 132 of the first driving mechanism 13 through a sliding block 133, so that the bearing member 15 may be moved up and down relative to the screw 132 of the first driving mechanism 13 by the sliding block 133. It is understood that, in other embodiments, the first driving mechanism 13 may also be an air cylinder or a hydraulic cylinder driving mechanism, as long as the first driving mechanism can drive the bearing member 15 to perform the lifting motion, and this embodiment is not particularly limited thereto.

Further, in order to make the overall structure of the laser welding spot detecting apparatus 10 more compact while ensuring that the bearing member 15 can be pressed down to align the product 30 to be detected, the position where the first driving mechanism 13 is disposed on the lifting plate 16 may be located between the tape winding-up portion 161 and the tape unwinding portion 160. For example, the first driving mechanism 13 is disposed at the middle of the lifting plate 16, and the tape winding part 161 and the tape unwinding part 160 may be symmetrically disposed at both sides of the first driving mechanism 13. Correspondingly, the bearing member 15 may be located at the middle of the lifting plate 16, the two ends of the adhesive tape 14 are wound around the adhesive tape winding part 161 and the adhesive tape unwinding part 160, respectively, and the middle part (bonding position) of the adhesive tape 14 is disposed on the bearing member 15.

As can be seen from the foregoing, the lifting plate 16 can also be driven by the second driving mechanism 162 to perform a lifting motion, so that, for the laser welding spot detection apparatus 10 of the present embodiment, there are two lifting motions, which will be described in detail below:

firstly, lifting movement for the first time: when the product 30 to be detected needs to be detected, the product 30 to be detected is clamped and fixed on the clamping assembly 12, at this time, the second driving mechanism 162 drives the lifting plate 16 to perform lifting motion relative to the detection table 11, so that the lifting plate 16 is arranged close to the product 30 to be detected, and at this time, the adhesive tape 14 can be approximately positioned above the first welding point 31 of the product 30 to be detected.

And secondly, lifting movement for the second time: the first driving mechanism 13 is controlled to drive the bearing part 15 to ascend and descend relative to the lifting plate 16, so that the bearing part 15 moves in a direction close to the product 30 to be detected under the driving action of the first driving mechanism 13 until the bearing part 15 is pressed on the product 30 to be detected, at this time, the adhesive tape 14 can be adhered to the first welding point 31 of the product 30 to be detected under the pressing action of the bearing part 15, then the bearing part 15 is driven to move upwards by controlling the first driving mechanism 13, that is, the bearing part 15 moves in a direction far away from the product 30 to be detected, because the adhesive tape 14 is adhered to the first welding point 31, and the adhesive tape 14 is moved upwards under the action of the bearing part 15, the adhesive tape 14 applies an upward pulling force to the first welding point 31, at this time, a detector can observe whether the preset pulling force applied to the first welding point 31 by the adhesive tape 14 causes the first welding point 31 to separate from the product 30 to be detected, if yes, the welding strength of the first welding spot 31 is insufficient, and the product 30 to be detected is a defective product; if not, it indicates that the welding strength of the first welding point 31 is sufficient, and the product 30 to be detected is a good product.

Adjusting the bonding position of the adhesive tape 14: after the current product 30 to be detected is detected, the detector can remove the product 30 to be detected and replace the next product 30 to be detected, in the process, the third driving mechanism 17 is controlled to drive the adhesive tape coiling portion 161 to move, so that the adhesive tape coiling portion 161 adjusts the position of the adhesive tape 14 which is already adhered to the first welding point 31 of the current product 30 to be detected, and the next section of the adhesive tape 14 which is not adhered is replaced, so that the next product 30 to be detected is adhered.

In some embodiments, as shown in fig. 10, in order to further improve the detection accuracy, the clamping assembly 12 is provided with a first electrical connector 121, the first electrical connector 121 is used for contacting and electrically connecting with a second welding point 32 of the product 30 to be detected, the laser welding point detection device 10 further comprises a connecting component 18, the connecting component 18 is in driving connection with the first driving mechanism 13, the connecting component 18 is provided with a second electrical connector 181, and the second electrical connector 181 is used for contacting and electrically connecting with a third welding point 33 of the product 30 to be detected. The laser welding spot detection device 10 further comprises a control board electrically connected to the first electrical connection member 121 and the second electrical connection member 181, the control board is configured to detect resistance changes of the first electrical connection member 121 and the second electrical connection member 181 when the attraction part 14 applies a preset pulling force to the first welding spot 31, and the control board is configured to output a detection result according to the resistance change.

The second solder 32 and the third solder 33 are located on different surfaces of the product 30 to be inspected, and the first solder 31, the second solder 32 and the third solder 33 are electrically connected to each other.

Considering that the number of the first welding points 31 is usually multiple, there may be a situation that the strength of the welding point where the adhesive tape 14 is adhered is sufficient during the process of applying the preset tensile force to the adhesive tape 14, but the insufficient welding points at other places cannot be detected, therefore, the present embodiment adopts the method of further testing the internal resistances of the first connecting member 121 and the second connecting member 181 connected to the second welding point 32 and the third welding point 33 respectively during the process of applying the preset tensile force to the first welding point 31 by the adhesive tape 14, so that the welding strength of all the first welding points 31 can be further determined according to the change of the internal resistances, thereby improving the detection accuracy.

Specifically, as can be seen from the foregoing, taking the product 30 to be tested as a charger as an example, the second solder 32 is a charging pin disposed on the front surface of the charger, and the third solder 33 is a soldering steel sheet on the back surface of the charger corresponding to the position of the charging pin, since the first electrical connecting part 121 contacts the second solder 32 and the second electrical connecting part 181 contacts the third solder 33, the first solder 31 is located on one side or one end of the third solder 33 so as not to affect the test, thereby facilitating the adhesion of the tape 14.

Further, the first electrical connecting part 121 and the second electrical connecting part 181 may be conductive pins or conductive elastic pieces, so as to directly contact the second pads 32 and the third pads 33. Illustratively, the first electrical connecting element 121 is a conductive thimble disposed on the clamping assembly 12, so that the first electrical connecting element 121 can contact the second welding point 32 of the product 30 to be detected when the product 30 to be detected is fixed on the clamping assembly 12. The second electrical connecting element 181 is also a conductive thimble, so that the second electrical connecting element 181 can contact with the third welding spot 33 of the product 30 to be detected, thereby realizing electrical connection.

In some embodiments, the connecting member 18 may be a block-shaped structure, which can be fixed on the lifting plate 16, so that during the lifting movement of the lifting plate 16 in the second driving mechanism 162, the connecting member 18 can also follow the lifting movement of the lifting plate 16 to move closer to the product 30 to be detected or move away from the product 30 to be detected, so as to realize the contact of the second connecting member 181 with the third welding point 33 of the product 30 to be detected or move away from the third welding point 33 of the product 30 to be detected. Specifically, the connecting component 18 can be fixed on the lifting plate 16 by a fixing frame 182, the fixing frame 182 can enclose the lifting plate 16 to form a hollow lifting space 182a, and the lifting space 182a can be used for the lifting movement of the bearing component 15. In other words, the linear distance from the connecting member 18 to the lifting plate 16 is further than the linear distance from the bearing member 15 to the lifting plate 16. That is, the connecting member 18 is positioned outside the carrier member 15, and the second electric connecting member 181 is also positioned outside the carrier member 15. It is understood that in other embodiments, the distance between the connecting part 18 and the bearing part 15 can be set according to the structure of the product to be tested, and the embodiment is not particularly limited thereto.

Further, the connecting part 18 can be provided with a cushion block 183 for arranging the second electric connecting piece 181, the cushion block 183 is arranged at the bottom of the connecting part 18, and the second electric connecting piece 181 can be fixedly arranged on the cushion block 183 in a penetrating manner. Specifically, the pad 183 may be a block structure made of an insulating, elastic or flexible material, so that on one hand, insulation can be ensured, and on the other hand, when the second electrical connecting element 181 contacts the third welding spot 33, the pad 183 contacts the product 30 to be detected, so as to prevent the product 30 to be detected from being scratched, and thus the effect of protecting the product 30 to be detected is achieved. Illustratively, the pad 183 may be a silicone pad. It is understood that in other embodiments, the pad 183 may be a rubber pad or a sponge pad, etc.

The following is a brief description of the process of contacting and electrically connecting the second electric connecting member 181 with the third welding point 33 of the product 30 to be tested:

when the product 30 to be detected is clamped and fixed on the clamping component 12, the first electric connecting piece 121 arranged on the clamping component 12 can just contact with the second welding point 32 on the product 30 to be detected, then the second driving mechanism 162 is controlled to drive the lifting plate 16 to move downwards to be close to the product 30 to be detected, in the process, the connecting component 18 and the cushion block 183 are driven by the lifting plate 16 to move downwards to be close to the product 30 to be detected until the second electric connecting piece 181 arranged on the cushion block 183 is aligned with and contacts with the third welding point 33 of the product 30 to be detected, at the moment, the second driving mechanism 162 is controlled to stop driving, and then the second electric connecting piece 181 is kept to be contacted with the third welding point 33 of the product 30 to be detected. Then, the first driving mechanism 13 is controlled to drive the bearing part 15 to move downwards until the bearing part 15 is pressed on the product 30 to be detected, at this time, the adhesive tape 14 can be adhered to the first welding point 31 of the product 30 to be detected, then the first driving mechanism 13 is controlled to drive the bearing part 15 to move upwards to be separated from the product 30 to be detected, in the process, the adhesive tape 14 is always adhered to the first welding point 31 and exerts a preset pulling force on the first welding point 31, the first electric connecting part 121 and the second electric connecting part 181 are always in contact with the second welding point 32 and the third welding point 33, and whether the welding strength of the first welding point 31 is enough can be known by detecting the resistance value change of the welding point at the corresponding connection part of the first electric connecting part 121 and the second electric connecting part 181.

In some embodiments, the control board may be a circuit board of the test platform 11, and in order to more accurately measure the resistance changes of the first electrical connecting part 121 and the second electrical connecting part 181 connected to the second welding point 32 and the third welding point 33, the laser welding point test apparatus 10 further includes an internal resistance tester electrically connected to the first electrical connecting part 121, the second electrical connecting part 181 and the control board, so that the internal resistance tester can feed back the resistance changes obtained by the test to the control board, so that the control board can output the test result according to the resistance changes.

Referring to fig. 1 again, further, in order to facilitate the detection personnel to quickly obtain the detection result, the laser welding spot detection apparatus 10 may further include an output component 19, the output component 19 may be disposed on the detection table 11, and the output component 19 may be electrically connected to the control board, so that the output component 19 may output the detection result. Optionally, the detection result may include at least one of an internal resistance value, a preset applied tension, and a welding strength.

Further, the output part 19 may include at least one of a light emitting part, a display device, or a sound part. Illustratively, as shown in fig. 1, the output part 19 may include a display device disposed on the front end surface of the test stage 11, and the display device may be used to display the internal resistance value and the welding strength. For example, the display device may display the measured internal resistance value and may display OK or NG in the text for representing that the welding strength is sufficient or insufficient. Of course, the display device may also adopt other text displays, for example, the displayable strength is enough or the displayable strength is not enough, as long as the detection result can be conveniently obtained by the detection personnel, which is not specifically limited in this embodiment.

It is understood that in other embodiments, the output component 19 may also include a light-emitting component, such as an LED lamp, which can emit light of different colors, so that the inspector can quickly determine the inspection result according to the light of different colors. For example, when the light emitting member emits red light, it may be determined that the detection result is insufficient in welding strength, and when the light emitting member emits green light, it may be determined that the detection result is sufficient in welding strength. Therefore, the detection result can be conveniently and quickly obtained by the detection personnel. Similarly, when output unit 19 includes the sound part, for example for the speaker or when being audible alarm ware, the accessible output OK or NG's pronunciation come to correspond the testing result respectively and be that welding strength is enough or welding strength is not enough, and the testing personnel passes through voice broadcast like this, can learn the testing result fast.

Referring to fig. 10 and 11, in some embodiments, the clamping assembly 12 is disposed on the inspection station 11, the clamping assembly 12 may include a fixing block 122 and one or more clamping blocks 123, the fixing block 122 may be used for placing the product 30 to be inspected, and the clamping blocks 123 may be used for clamping and fixing the product 30 to be inspected. Alternatively, in order to effectively locate the position of the product 30 to be detected on the fixed block 122, a placement groove 122a may be provided on the fixed block 122, and the product 30 to be detected may be at least partially placed in the placement groove 122 a. Specifically, the specific shape and size of the placement groove 122a may be set according to the product 30 to be detected, for example, when the product 30 to be detected is of an approximately square structure, the placement groove 122a may be set to a square groove, and when the product 30 to be detected is of a circular or circular-like structure, the placement groove 122a may be set to a circular or circular-like groove.

Further, in order to treat that detect the product 30 and fix in standing groove 122a, also avoid damaging simultaneously and wait to detect the product 30, can be provided with sucking disc 1221 in this standing groove 122a, this sucking disc 1221 can hold and wait to detect the product 30, and sucking disc 1221 can not harm simultaneously and wait to detect the product 30, treats to detect the product 30 and fixes a position and fix, avoids it to shift in the testing process.

Further, the first electric connecting member 121 may be disposed on the fixing block 122, and particularly, may be disposed at the outer circumference of the suction cup 1221, so that when the product 30 to be inspected is placed in the placing groove 122a, the first electric connecting member 121 may be aligned with and brought into contact with the second welding point 32 on the product 30 to be inspected to achieve electric conduction. It is understood that in other embodiments, the specific position of the first electrical connecting member 121 relative to the placement groove 122a may be set according to the product structure to be tested, for example, the first electrical connecting member 121 may also be set in the suction cup 1221 as long as it can be in contact with and electrically connected to the second welding point 32 of the product 30 to be tested, which is not particularly limited in this embodiment.

Further, the holding block 123 may be one or more. For example, the clamping blocks 123 may be multiple, and the clamping blocks 123 are disposed at intervals on the periphery of the fixing block 122 and are used for clamping and fixing the fixing block 122, so as to prevent the fixing block 122 from shifting during the detection process, and further prevent the product 30 to be detected from shifting.

Further, in order to improve the clamping reliability of the clamping block 123, the clamping assembly 12 further includes a fourth driving mechanism 124, the fourth driving mechanism 124 is disposed on the table surface 110 of the inspection table 11, and the fourth driving mechanism 124 is in driving connection with the clamping block 123 and is used for driving the clamping block 123 to clamp and fix the product 30 to be inspected by the clamping block 123. Specifically, the fourth driving mechanism 124 may be a cylinder. The clamping and fixing mode of the clamping block 123 is further driven by the fourth driving mechanism 124, so that the clamping and fixing of the product 30 to be detected on the fixing block 122 can be effectively ensured, the displacement of the product 30 to be detected is avoided, and the detection precision is further ensured. It is understood that in other embodiments, the fourth driving mechanism 124 may be a hydraulic cylinder.

Referring to fig. 1 again, in some embodiments, a start button 113 is disposed on the front end surface of the detection platform 11, and the start button 113 can be used to control the power on/off of the control board of the laser welding spot detection apparatus 10. Optionally, the number of the start keys 113 may be one or more, and when a plurality of start keys 113 are selected, the start can be achieved by pressing the start keys 113 simultaneously, so that the start safety of the laser welding point detection device 10 can be improved, and the problem of detection accidents caused by the fact that the laser welding point detection device 10 is started due to mistaken touch of one of the start keys 113 in the operation process is avoided. Illustratively, the number of the start keys 113 is two, the two start keys 113 are arranged at intervals on the front end surface of the detection platform 11 and are symmetrically arranged, and the above-mentioned display device may be arranged between the two start keys 113. It is understood that in other embodiments, the number of the activation keys 113 may be three, four, or only one.

In addition, in some other embodiments, the activation button 113 may also be provided for the first driving mechanism 13, the second driving mechanism 162, the third driving mechanism 17, and the fourth driving mechanism 124 to control the activation. For example, an activation button 113 may be provided to control the activation of the first driving mechanism 13, the second driving mechanism 162, the third driving mechanism 17, and the fourth driving mechanism 124. Alternatively, four activation buttons 113 may be provided, and the four activation buttons 113 may be used to control the activation of the first driving mechanism 13, the second driving mechanism 162, the third driving mechanism 17, and the fourth driving mechanism 124, respectively.

Further, the front end face of the detection table 11 is further provided with an alarm 114, and the alarm 114 is used for giving an alarm when the operation of the laser welding point detection device 10 fails, so as to remind a detection person to quickly troubleshoot the failure. For example, the alarm 114 may be an audible and visual alarm, and the alarm 114 may be disposed below the activation button 113. It is understood that in other embodiments, the alarm 114 may be simply an audible alarm, and the alarm 114 may be disposed above the activation key 113.

Further, the front end surface of the inspection table 11 is further provided with a reset button 115, the reset button 115 is used for pressing when the laser welding point detection device 10 is abnormal, so that the laser welding point detection device 10 stops working, and the reset button 115 can also be used for resetting the laser welding point detection device 10 when being pressed again. Illustratively, the reset button 115 is located below the activation key 113, and the reset button 115 is spaced apart from the alarm 114 on both sides of the display device. It is understood that in other embodiments, the reset button 115 may be disposed above the activation key 113.

The detection process of the laser welding point detection device 10 of the present embodiment for the product 30 to be detected is briefly described as follows:

the product 30 to be inspected is placed in the placement groove 122a of the fixing block 122 to suck the product 30 to be inspected by the suction cups 1221 and the second welding points 32 on the front surface of the product 30 to be inspected are brought into contact with the first electric connection members 121. Then the clamping block 123 moves relative to the fixed block 122 to the position where the clamping block 123 clamps and fixes the periphery of the fixed block 122, the fourth driving mechanism 124 is started, so that the fourth driving mechanism 124 applies driving force to the clamping block 123 to enable the clamping block 123 to be tightly clamped on the periphery of the fixed block 122, the fixed block 122 is ensured not to be displaced in the testing process, and further the product to be tested is ensured not to be displaced. Then the second driving mechanism 162 is started, so that the second driving mechanism 162 drives the lifting plate 16, the adhesive tape winding part 161, the adhesive tape unwinding part 160, the connecting part 18 and the second electrical connecting piece 181 on the connecting part 18 to move towards the direction of the product 30 to be detected until the second electrical connecting piece 181 contacts and is electrically connected with the third welding point 33 on the product 30 to be detected, then the first driving mechanism 13 is controlled, so that the first driving mechanism 13 drives the bearing part 15 to drive the adhesive tape 14 to press downwards towards the product 30 to be detected, so that the bearing part 15 is pressed on the product 30 to be detected, further the adhesive tape 14 can be adhered on the first welding point 31 of the product 30 to be detected, the first driving mechanism 13 is controlled to move reversely, the bearing part 15 is driven to be separated from the product 30 to be detected, so that the adhesive tape 14 can apply a preset pulling force to the first welding point 31, and at the moment, the first electrical connecting piece 121 and the second electrical connecting piece 181 can apply the second welding point 32, The resistance value change of the third welding spot 33 is fed back to the internal resistance tester, and the internal resistance tester can feed back the resistance value change to the control panel, and the control panel controls the display device to display the resistance value change, so that a tester can quickly know the welding quality of the first welding spot 31.

After the product 30 to be detected is detected, the detector can control the above mechanism to stop, and then take out the current product 30 to be detected and replace it with a new product 30 to be detected. Correspondingly, the third driving mechanism 17 is controlled to drive the tape winding portion 161 to move, so that the tape winding portion 161 winds up the just detected tape 14 and drives the tape unwinding portion 160 to release a new tape 14, thereby ensuring that the tape 14 used for testing a new product 30 to be detected is the tape 14 with sufficient viscosity, and ensuring that the test is performed normally and reliably.

According to the laser welding spot detection equipment 10 disclosed by the first embodiment of the invention, the suction part 14 is arranged to suck the first welding spot 31 of the product 30 to be detected under the driving of the first driving mechanism 13 and apply preset tension to the first welding spot, and meanwhile, the first electric connecting piece 121 and the second electric connecting piece 181 are arranged to be connected with the internal resistance tester to test the resistance value change of the second welding spot 32 and the third welding spot 33 which are communicated with the first welding spot 31 on the product 30 to be detected, so that the automatic detection of the welding strength and the welding quality of the product 30 to be detected can be realized, the detection precision can be effectively improved, the mode that only manual visual inspection can be carried out in the related technology is replaced, and the detection mode is simpler, more reliable and higher in precision.

Example two

Referring to fig. 12, fig. 1, fig. 2A and fig. 2B, a second embodiment discloses a method for detecting a solder joint using a laser solder joint detection apparatus 10, wherein the laser solder joint detection apparatus 10 is the laser solder joint detection apparatus 10 according to the first embodiment. The welding spot detection method comprises the following steps:

201. and placing the product to be detected on the clamping assembly and clamping and fixing the product through the clamping assembly.

The purpose of this step is to position the product 30 to be detected on the detection table 11, and fix the product 30 to be detected, so as to avoid the product 30 to be detected shifting during the detection process and affecting the detection result.

Alternatively, the product 30 to be inspected may be placed on the clamping assembly 12 manually by an inspector, or may be placed automatically by a robot, which is not limited in this embodiment.

203. And controlling the first driving mechanism to drive the attraction part to move along a first direction to be in contact with and attracted by a first welding point of the product to be detected.

In this step, the first direction is the direction towards the product 30 to be detected. The first direction may be a downward direction to facilitate the engaging member 14 approaching the product 30 to be tested. The suction component 14 can adopt an adhesive tape 14, a magnet or a suction cup 1221 and the like, so that the first welding point 31 of the product 30 to be detected can be sucked, the first welding point 31 of the product 30 to be detected is connected with the suction component 14, and the suction component 14 applies preset tension to the first welding point 31.

205. And controlling the first driving mechanism to drive the attraction part to move along a second direction so that the attraction part applies a preset pulling force to the first welding point.

Wherein the first direction is opposite to the second direction.

In this step, the second direction may be a direction away from the product 30 to be detected, that is, the second direction may be an upward direction, so that a predetermined pulling force may be applied to the first welding point 31 during the upward movement of the attraction part 14. When the first welding spot 31 is separated from the product 30 to be detected under the action of the preset tension of the attraction part 14, it indicates that the welding strength of the first welding spot 31 is insufficient, and the welding quality of the first welding spot 31 of the product 30 to be detected does not meet the requirement; when the first welding point 31 is not separated from the product 30 to be detected under the action of the preset pulling force of the attraction part 14, the welding strength of the first welding point 31 is sufficient, and the welding quality of the first welding point 31 of the product 30 to be detected meets the requirement.

Therefore, by adopting the welding spot detection method of the embodiment, the welding quality of the first welding spot 31 of the product 30 to be detected can be quickly judged, manual visual inspection is not needed, the detection efficiency is high, the detection precision is high, and therefore the defective products can be effectively prevented from flowing into the market.

Further, after the step 203 and before the step 205, the solder joint inspection method further includes the following steps:

204. and respectively connecting the first electric connecting piece and the second electric connecting piece with a second welding spot and a third welding spot of the product to be detected in an electric conduction mode.

After step 205, the solder joint inspection method further includes:

207. and detecting the resistance value changes of the first electric connecting piece and the second electric connecting piece when the suction part applies a preset pulling force to the first welding point.

The second solder points 32 and the third solder points 33 are electrically connected to the first solder points 31 of the product 30 to be detected, and the second solder points 32 and the third solder points 33 can be disposed on different surfaces of the product 30 to be detected. The first electric connecting piece 121 and the second electric connecting piece 181 can be conductive thimbles, the first electric connecting piece 121 is connected to the second welding spot 32, the second electric connecting piece 181 is connected to the third welding spot 33, and the first electric connecting piece 121 and the second electric connecting piece 181 are also connected to the internal resistance tester, so that the first electric connecting piece 121 and the second electric connecting piece 181 are equivalent to the positive electrode and the negative electrode connected to the product 30 to be tested, the resistance value change of the welding spot of the product 30 to be tested can be tested, and the internal resistance tester can quickly measure the resistance value change and obtain a conclusion whether the welding strength at the welding spot is enough. For example, there are a plurality of first welding points 31, when the attraction part 14 attracts, only one of the first welding points is attracted, under the action of the preset tension of the attraction part 14, if the welding strength at the first welding point 31 is insufficient, the first welding point 31 will be pulled by the attraction part 14 to separate from the product 30 to be detected, because the other first welding points 31 are electrically conducted with the first welding point 31, the resistance value measured by the internal resistance tester changes greatly, and it can be known that the quality of all the first welding points 31 at the position does not meet the requirement. If the welding strength of the first welding spot 31 is sufficient, the first welding spot 31 cannot be pulled by the attraction part 14, that is, the first welding spot 31 cannot be separated from the product 30 to be detected, and the resistance value of all the first welding spots 31 measured by the internal resistance tester does not change greatly, so that the quality of all the first welding spots 31 at the position can be known to meet the requirement.

Therefore, the mode of further utilizing the first electric connecting piece 121 and the second electric connecting piece 181 to measure the resistance value change of the product 30 to be detected is adopted, the precision of detecting the welding spots of the product 30 to be detected can be effectively improved, the suction operation does not need to be carried out on each welding spot, and the detection efficiency can be improved.

209. And outputting a detection result according to the resistance value change.

In the present embodiment, the detection result may be output by providing the output section 19. The output part 19 may include at least one of a light emitting part, a display device, or a sound part. Illustratively, the output member 19 may include a display device provided on the front end surface of the test stage 11, which may be used to display the internal resistance value and the welding strength. For example, the display device may display the measured internal resistance value and may display OK or NG in the text for representing that the welding strength is sufficient or insufficient. Of course, the display device may also adopt other text displays, for example, the displayable strength is enough or the displayable strength is not enough, as long as the detection result can be conveniently obtained by the detection personnel, which is not specifically limited in this embodiment.

It is to be understood that the above-described control of the first driving mechanism 13, the internal resistance tester, and the like may be realized by a controller or a processor on a circuit board provided on the inspection stage 11.

The laser welding point detection equipment and the welding point detection method disclosed by the embodiment of the invention are described in detail, a specific example is applied in the detailed description to explain the principle and the implementation mode of the invention, and the description of the embodiment is only used for helping to understand the laser welding point detection equipment, the welding point detection method and the core idea of the laser welding point detection equipment and the welding point detection method; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. The utility model provides a laser welding spot check out test set which characterized in that: the laser welding spot detection equipment comprises

A detection table;

the first driving mechanism is arranged on the detection table; and

2. The laser welding spot detection apparatus according to claim 1, wherein: the attraction part comprises any one of an adhesive tape, a sucker and a magnet.

3. The laser welding spot detection apparatus according to claim 1, wherein: the suction part is an adhesive tape, the laser welding point detection equipment further comprises a bearing part, the bearing part is used for bearing the adhesive tape, and the bearing part is in driving connection with the first driving mechanism;

the bearing part is used for being in contact with the product to be detected under the driving of the first driving mechanism, so that the adhesive tape is attracted with the first welding spot of the product to be detected.

4. The laser welding spot detection apparatus according to claim 3, wherein: the bearing part is an elastic part or a flexible part.

5. The laser welding spot detection apparatus according to claim 3, wherein: the laser welding spot detection equipment further comprises a lifting plate, a rubber belt unreeling part, a rubber belt reeling part and a second driving mechanism, wherein the rubber belt unreeling part and the rubber belt reeling part are arranged on the lifting plate at intervals, the rubber belt unreeling part is used for unreeling the rubber belt, the rubber belt reeling part is used for reeling the rubber belt, the second driving mechanism is arranged on the detection table and is in driving connection with the lifting plate, and the second driving mechanism is used for driving the lifting plate to ascend and descend relative to the detection table so that the lifting plate drives the rubber belt to be close to or far away from a product to be detected;

the first driving mechanism is arranged on the lifting plate and used for driving the bearing part to move up and down relative to the lifting plate.

6. The laser welding spot detection apparatus according to claim 5, wherein: the laser welding point detection equipment further comprises a third driving mechanism, the third driving mechanism is arranged on one surface, deviating from the adhesive tape coiling part or the adhesive tape uncoiling part, of the lifting plate, the third driving mechanism is in driving connection with the adhesive tape uncoiling part or the adhesive tape coiling part, and the third driving mechanism is used for driving the adhesive tape uncoiling part or the adhesive tape coiling part to move so as to adjust the bonding position of the adhesive tape.

7. The laser welding spot detection apparatus according to claim 6, wherein: one or more guide rollers can be rotatably arranged on the lifting plate, the one or more guide rollers are positioned between the adhesive tape winding part and the adhesive tape unwinding part, and the one or more guide rollers are used for winding and connecting the adhesive tape.

8. The laser welding spot detection apparatus according to claim 7, wherein: the laser welding point detection equipment further comprises a controller, and the controller is electrically connected with the third driving mechanism;

the adhesive tape unwinding device is characterized in that one of the adhesive tape unwinding part, the adhesive tape unwinding part and the at least one guide roller is provided with an inductor, the inductor is used for inducing the rotation angle of a part where the inductor is located and sending an electric signal to the controller, the controller is used for comparing the electric signal with the rotation angle of the third driving mechanism to obtain a comparison result, and the controller is further used for controlling the third driving mechanism to drive the adhesive tape unwinding part or the adhesive tape unwinding part to move when the comparison result is inconsistent with a preset result.

9. The laser welding spot detection apparatus according to any one of claims 1 to 8, wherein: the clamping assembly is provided with a first electric connecting piece, and the first electric connecting piece is used for being in contact with a second welding spot of the product to be detected so as to be electrically connected;

the laser welding point detection equipment further comprises a connecting part, the connecting part is in driving connection with the first driving mechanism, and is provided with a second electric connecting piece which is used for being in contact with and electrically connected with a third welding point of the product to be detected;

the laser welding spot detection equipment further comprises a control board, the control board is electrically connected with the first electric connecting piece and the second electric connecting piece, the control board is used for detecting resistance value changes of the first electric connecting piece and the second electric connecting piece when the attraction part applies preset tension to the first welding spot, and the control board is used for outputting a detection result according to the resistance value changes;

the second welding spot and the third welding spot are positioned on different surfaces of the product to be detected, and the first welding spot, the second welding spot and the third welding spot are mutually communicated.

10. The laser welding spot detection apparatus according to claim 9, wherein: the first electric connecting piece and the second electric connecting piece are conductive thimbles or conductive elastic pieces.

11. The laser welding spot detection apparatus according to claim 9, wherein: the laser welding spot detection equipment further comprises an output component, the output component is arranged on the detection table and electrically connected with the control panel, and the output component is used for outputting the detection result.

12. The laser welding spot detection apparatus according to claim 11, wherein: the output part includes at least one of a light emitting part, a display device, and a sound part.

13. The laser welding spot detection apparatus according to any one of claims 1 to 8, wherein: the clamping assembly comprises a fixing block and one or more clamping blocks, the fixing block is used for placing the product to be detected, and the clamping blocks are used for clamping and fixing the product to be detected.

14. The laser welding spot detection apparatus according to claim 13, wherein: the clamping assembly further comprises a fourth driving mechanism, the fourth driving mechanism is arranged on the table surface of the detection table and is in driving connection with the clamping block and used for driving the clamping block to clamp and fix the product to be detected.

15. The laser welding spot detection apparatus according to any one of claims 1 to 8, wherein: the detection table comprises a detection table body and is characterized in that a first side plate and a second side plate are arranged on two sides of the table top of the detection table body respectively, the first side plate, the second side plate and the table top of the detection table body are enclosed to form a detection space, and a clamping assembly is located in the detection space.

16. The laser welding spot detection apparatus according to claim 15, wherein: the first side plate and the second side plate are respectively provided with a sensing device, the sensing device is electrically connected with the first driving mechanism, the sensing device is used for sensing whether an object enters the detection space or not, and the sensing device is also used for sending a signal to the first driving mechanism when sensing that the object enters the detection space so as to stop driving the first driving mechanism.

17. A welding spot detection method using laser welding spot detection equipment is characterized in that: the laser welding spot detection equipment comprises a detection table, a clamping assembly, a first driving mechanism and an attraction part, wherein the clamping assembly is arranged on the table surface of the detection table, and the first driving mechanism is arranged on the detection table and is in driving connection with the attraction part; the welding spot detection method comprises the following steps:

controlling the first driving mechanism to drive the attraction part to move along a first direction to be in contact with and attracted by a first welding spot of the product to be detected;

wherein the first direction is opposite to the second direction.

18. The welding spot detection method according to claim 17, wherein the clamping assembly is provided with a first electrical connection member for contacting with a second welding spot of the product to be detected for electrical connection, the laser welding spot detection apparatus further comprises a connection member drivingly connected with the first driving mechanism, the connection member is provided with a second electrical connection member for contacting with a third welding spot of the product to be detected for electrical connection; the welding spot detection method further comprises the following steps:

the first electric connecting piece and the second electric connecting piece are controlled to be electrically conducted with the second welding point and the third welding point respectively;

detecting resistance value changes of the first electric connecting piece and the second electric connecting piece when the suction part applies the preset tension to the first welding point;

outputting a detection result according to the resistance value change;

the first welding spot, the second welding spot and the third welding spot are mutually communicated, and the second welding spot and the third welding spot are positioned on different surfaces of the product to be detected.