Welding equipment and positioning device thereof

Abstract

The positioning device is used for clamping and positioning a first workpiece and a second workpiece and comprises a base, a first positioning mechanism, a cover plate, a plurality of second positioning mechanisms and a detection mechanism. The base is provided with a material placing position for bearing a second workpiece and a plurality of first detection reference parts; the first positioning mechanism comprises a bearing piece and two abutting and pushing assemblies, the bearing piece is provided with a positioning groove and a detection reference hole which are used for containing a first workpiece, the abutting and pushing assemblies are used for positioning the first workpiece, and the abutting and pushing assemblies are provided with second detection reference parts; the second positioning mechanism is arranged on the base for positioning a second workpiece; the cover plate is detachably connected to the base; the detection mechanism is erected above the base and used for obtaining images of the base and the first positioning mechanism. The welding equipment comprises a laser and the positioning device. The positioning device can clamp and position the first workpiece and the second workpiece and detect the positions of the first workpiece and the second workpiece so as to improve the machining yield.

Description

Technical Field

[0001] This application relates to the field of welding processing technology, specifically to a welding equipment and its positioning device. Background Technology

[0002] Laser welding, a commonly used processing technology, is primarily used to weld two workpieces together. Before welding, the two workpieces must be assembled. Currently, this is typically done in advance using a positioning fixture, followed by the welding operation. However, with current positioning fixtures, the workpiece is directly placed into the welding machine after being clamped and positioned, making it impossible to verify the accuracy of the workpiece's position within the fixture. This results in a relatively low yield rate for the welded product. Utility Model Content

[0003] In view of the above, it is necessary to propose a welding equipment and its positioning device, which can clamp and position a first workpiece and a second workpiece, and detect the positions of the first workpiece and the second workpiece, so as to improve the processing yield.

[0004] This application provides a positioning device for clamping and positioning a first workpiece and a second workpiece, comprising: a base including a feeding position and a plurality of first detection reference parts, the plurality of first detection reference parts being spaced apart around the feeding position; a first positioning mechanism including a carrier, two pushing components and two second detection reference parts, the carrier being connected to the base and inserted into the feeding position, the two pushing components being disposed on the carrier, the carrier having a positioning groove for accommodating the first workpiece and a detection reference hole spaced apart from the positioning groove on the side opposite to the base, the two pushing components being respectively disposed near two adjacent sides of the carrier and used to push the first workpiece against two adjacent groove walls of the positioning groove to position the first workpiece. Each of the second detection reference parts is disposed on the side of the pushing assembly facing the carrier and away from the base; a plurality of second positioning mechanisms are disposed on the base and arranged around the feeding position, the plurality of second positioning mechanisms being used to push the second workpiece into the feeding position; a cover plate is detachably connected to the base, used to press the second workpiece tightly against the first workpiece when the second workpiece is placed on the feeding position and stacked on top of the first workpiece; and a detection mechanism is mounted above the base, used to acquire images of the base and the first positioning mechanism, in order to detect the distance between the first detection reference part and the side of the second workpiece and the distance between the detection reference hole and the second detection reference part to determine whether the position of the first workpiece is installed accurately.

[0005] The aforementioned positioning device, through a first positioning mechanism, can support and position a first workpiece. The first workpiece is placed in a positioning groove within the support member. Two pushing components push the first workpiece against the sidewall of the positioning groove to position it. After positioning, a detection mechanism acquires images of the first positioning mechanism and the first workpiece to detect the distance between the detection reference hole and the two second detection reference parts, thereby determining whether the positioning of the first workpiece is accurate. The base's feeding position can support a second workpiece, which is positioned by a second positioning mechanism. After positioning, a detection mechanism acquires images of the base and the second workpiece to detect the distance between multiple first detection reference parts and the sidewall of the second workpiece, thereby determining whether the positioning of the second workpiece is accurate. A cover plate can be placed on the base to press the second workpiece, ensuring contact between the second and first workpieces, thus completing the positioning of both. After installing the first and second workpieces, the aforementioned positioning device can sequentially detect their positions to improve accuracy and increase processing yield.

[0006] In some embodiments, the support member has a receiving groove on the side facing the base, and two movable holes on the side facing away from the base. The two movable holes are respectively connected to the receiving groove and spaced apart from the positioning groove. The positioning groove is connected to the receiving groove, and two second detection reference parts are respectively movably disposed in the two movable holes. Each pushing component includes a pushing member and a first elastic member. The pushing member is slidably connected to the receiving groove and is disposed facing the positioning groove. The two ends of the first elastic member abut against the groove wall of the receiving groove and the end of the pushing member facing away from the positioning groove, respectively, so that the pushing member elastically pushes the first workpiece against the groove wall of the positioning groove.

[0007] In some embodiments, the support member is further provided with a welding groove, which is located at the bottom of the receiving groove and communicates with the positioning groove; the base is provided with a welding avoidance groove that communicates with the receiving groove, which is used to avoid the welding groove and the positioning groove.

[0008] In some embodiments, the support member is provided with a first smoke exhaust groove on the side away from the base, the first smoke exhaust groove is connected to the positioning groove, and the base is provided with a second smoke exhaust groove connected to the first smoke exhaust groove, the cross-sectional area of ​​the second smoke exhaust groove being greater than or equal to the cross-sectional area of ​​the first smoke exhaust groove.

[0009] In some embodiments, the second positioning mechanism includes a plurality of fixing members and a plurality of movable components. The plurality of fixing members are respectively disposed near two adjacent sides of the feeding position, and the plurality of movable components are respectively disposed near two other adjacent sides of the feeding position. Each movable component includes a movable member and a second elastic member. The movable member is slidably connected to the base, and the two ends of the second elastic member abut against the movable member and the base, respectively. The second elastic member is used to push the movable member toward the feeding position, so that the movable member pushes the second workpiece to the corresponding fixing member and thereby positions the second workpiece.

[0010] In some embodiments, each of the second detection reference portions is provided with a first inclined surface at one end near the positioning groove, so that an external device pushes against the first inclined surface and thus pushes the second detection reference portion away from the positioning groove, thereby driving the corresponding pushing member away from the positioning groove; each of the movable members is provided with a second inclined surface at one end facing the feeding position, so that an external device pushes against the second inclined surface and thus pushes the movable member away from the feeding position.

[0011] In some embodiments, the cover plate has a plurality of detection holes, each of which corresponds one-to-one with a plurality of first detection reference portions, and each detection hole corresponds to the side of the second workpiece adjacent to the corresponding first detection reference portion, so as to expose the first detection reference portion and the side of the second workpiece so that the detection mechanism can detect the position of the second workpiece.

[0012] In some embodiments, the base is provided with a plurality of positioning pins on the side facing the cover plate, and the cover plate is provided with a plurality of positioning holes corresponding one-to-one with the plurality of positioning pins. When the cover plate is placed on the base, the positioning pins are inserted into the corresponding positioning holes to position the cover plate.

[0013] In some embodiments, the base is further provided with a plurality of snap-fit ​​members on the side facing the cover plate, each snap-fit ​​member having a snap-fit ​​protrusion extending in a direction parallel to the plane of the base; the cover plate is provided with a plurality of holding assemblies corresponding one-to-one with the plurality of snap-fit ​​members, each holding assembly including a holding member and a third elastic member, the holding member being slidably connected to the cover plate, the two ends of the third elastic member being respectively abutting against the holding member and the cover plate, the third elastic member being used to push the holding member toward the snap-fit ​​protrusion, so that the holding member engages with the snap-fit ​​protrusion, thereby locking the cover plate and the base.

[0014] This application embodiment also provides a welding device, including a laser and the above-described positioning device, wherein the laser is used to weld the first workpiece to the second workpiece. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the welding equipment provided in an embodiment of this application.

[0016] Figure 2 for Figure 1 The diagram shows an exploded view of the base and cover plate of the welding positioning device.

[0017] Figure 3 for Figure 2 Top view of position III of the positioning device shown.

[0018] Figure 4 for Figure 1 Top view of position IV of the welding equipment shown.

[0019] Figure 5 for Figure 1 The diagram shows another angle of the positioning device.

[0020] Figure 6 for Figure 5 An enlarged structural schematic diagram of position VI of the positioning device shown.

[0021] Figure 7 for Figure 2 The exploded structural diagram of the base, the first positioning mechanism, and the second positioning mechanism shown.

[0022] Key component symbols: Welding equipment 1000, positioning device 100, base 10, material feeding position 11, first detection reference part 12, welding avoidance groove 13, second exhaust chute 14, positioning pin 15, snap-fit ​​part 16, snap-fit ​​protrusion 161, first positioning mechanism 20, bearing part 21, positioning groove 211, detection reference hole 212, receiving groove 213, movable hole 214, welding groove 215, first exhaust chute 216, pushing assembly 22, etc. The system includes a second detection reference unit 221, a first inclined surface 2211, a pushing member 222, a first elastic member 223, a second positioning mechanism 30, a fixing member 31, a movable component 32, a movable member 321, a second inclined surface 3211, a second elastic member 322, a cover plate 40, a detection hole 41, a positioning hole 42, a clamping component 43, a clamping member 431, a third elastic member 432, a detection mechanism 50, a first workpiece 200, a second workpiece 300, and a laser 400. Detailed Implementation

[0023] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0024] In the description of this application, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, in the description of this application, it should be noted that "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows communication between components; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. The following will describe some embodiments of this application in detail with reference to the accompanying drawings.

[0026] The embodiments of this application will be further described below with reference to the accompanying drawings.

[0027] Please see Figure 1 , Figure 2 and Figure 3 This application provides a positioning device 100 for clamping and positioning a first workpiece 200 and a second workpiece 300. The first workpiece 200 can be a small part, such as a sheet structure, and the second workpiece 300 can be a large part, such as a plate structure. In this embodiment, the first workpiece 200 is approximately L-shaped, and the second workpiece 300 is a metal plate of an electronic product such as a mobile phone or tablet computer, or a glass panel with a metal edge. The positioning device 100 includes a base 10, a first positioning mechanism 20, a plurality of second positioning mechanisms 30, a cover plate 40, and a detection mechanism 50.

[0028] Specifically, please see Figure 1 , Figure 2 and Figure 4 The base 10 includes a material placement position 11 and a plurality of first detection reference parts 12. The material placement position 11 is used to support the second workpiece 300. The plurality of first detection reference parts 12 are spaced apart around the material placement position 11.

[0029] The base 10 is generally plate-shaped to provide stable support. The feeding position 11, which supports the second workpiece 300, is generally rectangular and has four sides. The first detection reference part 12 can be a protrusion, hole, groove, or other structure. The first detection reference part 12 serves as a detection reference and only needs to be detectable by the detection mechanism 50. In this embodiment, the first detection reference part 12 is a rectangular hole. There can be two, four, six, eight, etc., of the first detection reference parts 12. Multiple first detection reference parts 12 can be corresponding to two adjacent sides of the feeding position 11, or to three sides of the feeding position 11, or to each side of the feeding position 11.

[0030] Please see Figure 2 , Figure 3 as well as Figure 7 The first positioning mechanism 20 includes a support member 21, two pushing components 22, and two second detection reference parts 221. The support member 21 is connected to the base 10 and inserted into the material feeding position 11. The two pushing components 22 are disposed on the support member 21. The support member 21 has a positioning groove 211 for accommodating the first workpiece 200 and a detection reference hole 212 spaced apart from the positioning groove 211 on the side away from the base 10. The two pushing components 22 are respectively disposed close to two adjacent sides of the support member 21 and are used to push the first workpiece 200 to the two adjacent groove walls of the positioning groove 211 to position the first workpiece 200. The two second detection reference parts 221 are disposed on the pushing components 22, each having a side facing the support member 21 away from the base 10. The support member 21 can be a block structure, and the structure of the positioning groove 211 is adapted to the structure of the first workpiece 200. The carrier 21 can be entirely or partially located at the material placement position 11 of the base 10, as long as the positioning groove 211 corresponds to the material placement position 11. The detection reference hole 212 serves as a detection reference and only needs to be detectable by the detection mechanism 50. In this embodiment, the detection reference hole 212 is a circular hole. After the first workpiece 200 is placed in the positioning groove 211, the two sets of pushing components 22 push the first workpiece 200 against the hole wall of the corresponding positioning groove 211 to position the first workpiece 200. The second detection reference part 221 can be a protrusion, hole, groove, or other structure. The second detection reference part 221 serves as a detection point and only needs to be detectable by the detection mechanism 50. In this embodiment, the second detection reference part 221 is a protrusion.

[0031] In this embodiment, the number of first positioning mechanisms 20 can be set to multiple, such as two, four, eight, etc. The number of first positioning mechanisms 20 and their positions on the base 10 can be set according to actual needs and are not limited here.

[0032] Please see Figure 2 and Figure 3Multiple second positioning mechanisms 30 are disposed on the base 10 and arranged around the feeding position 11. The second positioning mechanisms 30 are used to push the second workpiece 300 into the feeding position 11. Thus, when the second workpiece 300 is placed in the feeding position 11 of the base 10, the second positioning mechanisms 30 can position the second workpiece 300 on the horizontal plane. It can be understood that when the second workpiece 300 is placed in the feeding position 11, the second workpiece 300 abuts against the first workpiece 200.

[0033] Please see Figure 2 and Figure 3 The cover plate 40 is detachably connected to the base 10 and is used to press the second workpiece 300 against the first workpiece 200 when the second workpiece 300 is placed in the feeding position 11 and stacked on top of the first workpiece 200. The cover plate 40 can be a plate-shaped structure. By setting the cover plate 40, the second workpiece 300 is pressed in the vertical direction, thereby positioning the second workpiece 300 in the vertical direction. The cover plate 40 can cooperate with the base 10 to clamp the first workpiece 200 and the second workpiece 300, improving the stability of the position of the first workpiece 200 and the second workpiece 300 when the moving positioning device 100 is in use.

[0034] Please see Figure 1 , Figure 2 and Figure 3 The detection mechanism 50 is mounted above the base 10 and is used to acquire images of the base 10 and the first positioning mechanism 20 to detect the distance between the first detection reference part 12 and the side of the second workpiece 300, as well as the distance between the detection reference hole 212 and the second detection reference part 221. The detection mechanism 50 may include a device capable of acquiring images, such as a CCD camera (charge-coupled device), and also includes an image processor (not shown). The specific working principle of the detection mechanism 50 is as follows: after the two pushing components 22 position the first workpiece 200 in the positioning groove 211, the detection mechanism 50 acquires an image of the first positioning mechanism 20 and measures the distance between the detection reference hole 212 and the two second detection reference parts 221 to determine whether the position of the first workpiece 200 is accurately installed. Figure 3 If the measured distances a and b are within a preset range, it indicates that the position of the first workpiece 200 is accurate; if the measured distances a and / or b are not within the preset range, it indicates that the first workpiece 200 is not set in the preset position. After the second positioning mechanism 30 positions the second workpiece 300, the detection mechanism 50 acquires images of the base 10 and the second workpiece 300, and detects the distance between each first detection reference part 12 and the side of the second workpiece 300 closest to that first detection reference part 12, such as... Figure 4If the measured distance c is within the preset range, it indicates that the second workpiece 300 is in the correct position. If the measured distance c is not within the preset range, it indicates that the second workpiece 300 is not in the preset position. When both the first workpiece 200 and the second workpiece 300 are in the correct position, the positioning device 100 can be flipped over, and the first workpiece 200 and the second workpiece 300 can be processed by welding or other steps through the welding clearance groove 13 on the back of the base 10 (described below). Otherwise, the first workpiece 200 and / or the second workpiece 300 can be removed and repositioned.

[0035] The positioning device 100 provided in this application embodiment can support and position a first workpiece 200 through a first positioning mechanism 20. The first workpiece 200 is placed in the positioning groove 211 in the support member 21. The first workpiece 200 is positioned by pushing the first workpiece 200 against the side wall of the positioning groove 211 through two pushing components 22. After positioning, the detection mechanism 50 can acquire images of the first positioning mechanism 20 and the first workpiece 200 to detect the distance between the detection reference hole 212 and the two second detection reference parts 221, thereby determining whether the positioning of the first workpiece 200 is accurate. The material placement position 11 of the base 10 can support a second workpiece 300 and position the second workpiece 300 through a second positioning mechanism 30. After positioning, the detection mechanism 50 can acquire images of the base 10 and the second workpiece 300 to detect the distance between the multiple first detection reference parts 12 and the side of the second workpiece 300, thereby determining whether the positioning of the second workpiece 300 is accurate. The cover plate 40 can be placed on the base 10 to press and hold the second workpiece 300 to ensure that the second workpiece 300 is in contact with the first workpiece 200, thus completing the positioning of the first workpiece 200 and the second workpiece 300. The positioning device 100 provided in this embodiment can detect the positions of the first workpiece 200 and the second workpiece 300 sequentially after installation, thereby improving the accuracy of their positions and increasing the processing yield.

[0036] In some embodiments, see Figure 2 , Figure 5 and Figure 6The support member 21 has a receiving groove 213 on the side facing the base 10, and two movable holes 214 on the side facing away from the base 10. The two movable holes 214 are respectively connected to the receiving groove 213 and spaced apart from the positioning groove 211. The positioning groove 211 is connected to the receiving groove 213. Two second detection reference parts 221 are respectively movably disposed in the two movable holes 214. Each pushing component 22 includes a pushing member 222 and a first elastic member 223. The pushing member 222 is slidably connected to the receiving groove 213 and is disposed facing the positioning groove 211. The two ends of the first elastic member 223 abut against the groove wall of the receiving groove 213 and the end of the pushing member 222 facing away from the positioning groove 211, so that the pushing member 222 elastically pushes the first workpiece 200 against the groove wall of the positioning groove 211. The two second detection reference parts 221 are respectively movably disposed in the two movable holes 214.

[0037] The pushing member 222 can be a block structure. The end of the pushing member 222 that abuts against the first workpiece 200 can be configured to fit the first workpiece 200, such as a block or cone shape. The first elastic member 223 can be an elastic structure such as a spring. The second detection reference part 221 is a block structure and is movably disposed in the movable hole 214. It can be understood that the pushing member 222 and the bearing member 21 are slidably connected, and a structure such as a protrusion and a groove can be provided for the slidable connection to improve the sliding stability of the pushing member 222. When the first workpiece 200 is placed in the positioning groove 211, the first elastic member 223 pushes the corresponding pushing member 222 towards the first workpiece 200 until it pushes the first workpiece 200 to the hole wall of the corresponding positioning groove 211. At this time, the second detection reference part 221 abuts against the hole wall of the movable hole 214 to prevent the pushing member 222 from moving excessively and damaging the first workpiece 200.

[0038] In some embodiments, see Figure 2 and Figure 7Each second detection reference part 221 has a first inclined surface 2211 at one end near the positioning groove 211, so that an external device (not shown) pushes against the first inclined surface 2211 and then pushes the second detection reference part 221 away from the positioning groove 211, thereby driving the corresponding pushing member 222 away from the positioning groove 211. The external device can be a robot or other mechanism with an inclined surface tangent to the first inclined surface 2211. Before the external device places the first workpiece 200 into the positioning groove 211, the inclined surface of the external device first abuts against the first inclined surface 2211, and then pushes against the second detection reference part 221 when placing the first workpiece 200 into the positioning groove 211, thereby driving the pushing member 222 away from the positioning groove 211, so as to facilitate the placement of the first workpiece 200 in the positioning groove 211. When the external device moves away from the first positioning mechanism 20 and to a position opposite to the first inclined surface 2211, the first elastic member 223 pushes the pusher member 222 toward the first workpiece 200. The pusher member 222 can also move toward the first workpiece 200 gradually by abutting the external device through the first inclined surface 2211, so as to avoid the pusher member 222 impacting the first workpiece 200 and causing damage to the first workpiece 200.

[0039] In some embodiments, see Figure 2 , Figure 3 , Figure 5 and Figure 6 The support member 21 is also provided with a welding groove 215, which is located at the bottom of the receiving groove 213 and communicates with the positioning groove 211. The base 10 is provided with a welding avoidance groove 13 that communicates with the receiving groove 213. The welding avoidance groove 13 is used to avoid the welding groove 215 and the positioning groove 211. The welding groove 215 can be an inclined groove, and its cross-section can be trapezoidal or triangular. By setting the welding groove 215, the welding positions of the first workpiece 200 and the second workpiece 300 can be exposed, which is convenient for welding processing. The structure of the welding avoidance groove 13 can be rectangular. By setting the welding avoidance groove 13, the welding groove 215 and the positioning groove 211 can be exposed, which is convenient for processing the first workpiece 200 and the second workpiece 300. In this embodiment, if there are multiple first positioning mechanisms 20, there are also multiple welding avoidance grooves 13, which correspond to each first positioning mechanism 20.

[0040] In some embodiments, see Figure 2The support member 21 has a first exhaust trough 216 on the side opposite to the base 10, which communicates with the positioning groove 211. The base 10 has a second exhaust trough 14 communicating with the first exhaust trough 216, and the cross-sectional area of ​​the second exhaust trough 14 is greater than or equal to the cross-sectional area of ​​the first exhaust trough 216. By setting the first exhaust trough 216 and the second exhaust trough 14, smoke can be exhausted during the welding process, improving the welding effect. The fact that the cross-sectional area of ​​the second exhaust trough 14 is greater than or equal to the cross-sectional area of ​​the first exhaust trough 216 can further improve the smoke exhaust effect.

[0041] In some embodiments, see Figure 2 and Figure 7 The second positioning mechanism 30 includes multiple fixing members 31 and multiple movable components 32. The multiple fixing members 31 are respectively arranged near two adjacent sides of the feeding position 11, and the multiple movable components 32 are respectively arranged near two other adjacent sides of the feeding position 11. Each movable component 32 includes a movable member 321 and a second elastic member 322. The movable member 321 is slidably connected to the base 10. The two ends of the second elastic member 322 abut against the movable member 321 and the base 10, respectively. The second elastic member 322 is used to push the movable member 321 toward the feeding position 11 so that the movable member 321 pushes the second workpiece 300 to the corresponding fixing member 31 and thus positions the second workpiece 300.

[0042] The fixing member 31 can be a block structure, and the number of fixing members 31 can be four, six, etc., respectively set on two adjacent sides of the feeding position 11, that is, two or three fixing members 31 can be set on each side. The number of movable components 32 can be four, six, etc., respectively set on the other two sides of the feeding position 11, that is, two or three movable components 32 can be set on each side. The movable component 321 can be a block structure, and the second elastic component 322 can be an elastic structural component such as a spring. It can be understood that the movable component 321 is slidably connected to the base 10, such as by a slide rail, or by a corresponding groove in the base 10 to accommodate part of the movable component 321. The end of the second elastic component 322 away from the movable component 321 can abut against the protruding block structure on the base 10 or against the groove wall of the groove accommodating the movable component 321, so as to push the movable component 321 toward the feeding position 11. After the second workpiece 300 is placed in the feeding position 11, the second elastic member 322 pushes the movable member 321 toward the workpiece, thereby pushing the second workpiece 300 to the corresponding fixed member 31, thus completing the positioning of the second workpiece 300.

[0043] In some embodiments, see Figure 2 and Figure 7Each movable part 321 has a second inclined surface 3211 at one end facing the feeding position 11, so that the external device pushes against the second inclined surface 3211 and thus pushes the movable part 321 away from the feeding position 11. The external device can be a robot or other inclined surface mechanism tangent to the second inclined surface 3211. Before the external device places the second workpiece 300 into the feeding position 11, the external device first abuts against the second inclined surface 3211, and then pushes the movable part 321 away from the feeding position 11 when placing the second workpiece 300 into the feeding position 11, so as to facilitate the placement of the second workpiece 300 into the feeding position 11. When the external device moves away from the feeding position 11 and moves to a position opposite to the second inclined surface 3211, the second elastic member 322 pushes the movable member 321 toward the second workpiece 300. The second inclined surface 3211 abuts against the external device, which can also make the movable member 321 move toward the second workpiece 300 step by step, so as to avoid the movable member 321 impacting the second workpiece 300 and causing damage to the second workpiece 300.

[0044] In some embodiments, see Figure 2 and Figure 4 The cover plate 40 has multiple detection holes 41, each corresponding to a first detection reference part 12. Each detection hole 41 also corresponds to the side of the second workpiece 300 adjacent to the corresponding first detection reference part 12, exposing the first detection reference part 12 and the side of the second workpiece 300 for the detection mechanism 50 to detect the position of the second workpiece 300. The number and position of the detection holes 41 correspond to the first detection reference parts 12. When the cover plate 40 is placed on the base 10, the detection holes 41 expose the first detection reference parts 12 and the side of the corresponding second workpiece 300, facilitating the detection mechanism 50 to detect the position of the second workpiece 300. By providing detection holes 41 on the cover plate 40, the position of the second workpiece 300 can be detected after the cover plate 40 is placed on the base 10, avoiding the situation where the second workpiece 300 shifts when the cover plate 40 is placed, resulting in inaccurate positioning of the second workpiece 300.

[0045] In some embodiments, see Figure 2 and Figure 7The base 10 has multiple positioning pins 15 on the side facing the cover plate 40. The cover plate 40 has multiple positioning holes 42 that correspond one-to-one with the positioning pins 15. When the cover plate 40 is placed on the base 10, the positioning pins 15 are inserted into the corresponding positioning holes 42 to position the cover plate 40. The positioning pins 15 can be columnar structures, and the number can be two, four, six, etc., and the multiple positioning pins 15 can be arranged around the material feeding position 11. The number of positioning holes 42 can also be two, four, six, etc., and the number and position of the positioning holes 42 correspond to the positioning pins 15. In this way, the positioning accuracy of the cover plate 40 on the base 10 can be improved through the cooperation of the positioning pins 15 and the positioning holes 42.

[0046] In some embodiments, see Figure 1 , Figure 2 and Figure 7 The base 10 is provided with a plurality of snap-fit ​​pieces 16 on the side facing the cover plate 40. Each snap-fit ​​piece 16 is provided with a snap-fit ​​protrusion 161 extending in a direction parallel to the plane of the base 10. The cover plate 40 is provided with a plurality of holding components 43 corresponding one-to-one with the plurality of snap-fit ​​pieces 16. Each holding component 43 includes a holding member 431 and a third elastic member 432. The holding member 431 is slidably connected to the cover plate 40. The two ends of the third elastic member 432 abut against the holding member 431 and the cover plate 40 respectively. The third elastic member 432 is used to push the holding member 431 toward the snap-fit ​​protrusion 161 so that the holding member 431 engages with the snap-fit ​​protrusion 161, thereby locking the cover plate 40 and the base 10. The snap-fit ​​component 16 is generally columnar in shape, and the snap-fit ​​protrusion 161 is generally block-shaped. The number of snap-fit ​​components 16 can be two or four, and the number and position of the holding components 43 can be two or four, corresponding to the snap-fit ​​components 16. In this embodiment, the cover plate 40 also has through holes corresponding to the snap-fit ​​components 16. The holding component 431 is generally frame-shaped and has corresponding through holes. The third elastic component 432 is an elastic structural component such as a spring. When the cover plate 40 is placed on the base 10, the snap-fit ​​component 16 passes through the through holes of the cover plate 40 and the holding component 431. Then, the third elastic component 432 pushes the holding component 431 until the holding component 431 snaps into the snap-fit ​​protrusion 161, thus fixing the cover plate 40. When it is necessary to remove the cover plate 40, press the retaining member 431. The retaining member 431 compresses the third elastic member 432 and moves away from the retaining protrusion 161, and the cover plate 40 can be removed.

[0047] Please see Figure 1 and Figure 2 This application embodiment also provides a welding device 1000, including a laser 400 and the aforementioned positioning device 100, wherein the laser 400 is used to weld a first workpiece 200 to a second workpiece 300.

[0048] The working process of the positioning device 100 and welding equipment 1000 provided in this application embodiment is roughly as follows:

[0049] First, the first workpiece 200 is placed in the positioning groove 211 of the first positioning mechanism 20, and the first workpiece 200 is positioned by the two pushing components 22. After positioning, the detection mechanism 50 takes a picture of the first positioning mechanism 20 and detects the distance between the detection reference hole 212 and the two second detection reference parts 221 to determine whether the position of the first workpiece 200 is correct. If it is correct, the second workpiece 300 is placed. If it is incorrect, rework is performed, that is, the first workpiece 200 is removed and repositioned.

[0050] After the first workpiece 200 is positioned, the second workpiece 300 is placed in the feeding position 11 and covers the first workpiece 200. The second workpiece 300 is positioned by the second positioning component. Then, the cover plate 40 is placed on the base 10 to hold the second workpiece 300 and the first workpiece 200. When placing the cover plate 40, the cover plate 40 and the base 10 are locked by the cooperation of the snap fastener 16 and the snap holding component 43.

[0051] Next, the detection mechanism 50 acquires an image of the positioning device 100 and detects the distance between the first detection reference part 12 and the side of the corresponding second workpiece 300 to determine whether the position of the second workpiece 300 is correct. If it is incorrect, rework is performed, that is, the first workpiece 200 and the second workpiece 300 are removed and repositioned.

[0052] Finally, the inspection agency 50 checks that the second workpiece 300 is in the correct position, and the flipping positioning device 100 and the laser 400 weld the first workpiece 200 to the second workpiece 300 through the welding clearance groove 13.

[0053] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be embraced within this application.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A positioning device for clamping and positioning a first workpiece and a second workpiece, characterized in that, include: The base includes a material feeding position and a plurality of first detection reference parts, the plurality of first detection reference parts being spaced apart around the material feeding position; The first positioning mechanism includes a carrier, two pushing components, and two second detection reference parts. The carrier is connected to the base and inserted into the material feeding position. The two pushing components are disposed on the carrier. The carrier has a positioning groove for accommodating the first workpiece and a detection reference hole spaced apart from the positioning groove on the side away from the base. The two pushing components are respectively disposed near two adjacent sides of the carrier and are used to push the first workpiece against the two adjacent groove walls of the positioning groove to position the first workpiece. The two second detection reference parts are respectively disposed on the side of the pushing components facing the carrier away from the base. Multiple second positioning mechanisms are disposed on the base and arranged around the feeding position, and the multiple second positioning mechanisms are used to push the second workpiece into the feeding position; A cover plate, detachably connected to the base, is used to press the second workpiece firmly against the first workpiece when the second workpiece is placed at the feeding position and stacked on top of the first workpiece; and The detection mechanism, mounted above the base, is used to acquire images of the base and the first positioning mechanism to detect the distance between the first detection reference part and the side of the second workpiece, as well as the distance between the detection reference hole and the second detection reference part, to determine whether the position of the first workpiece is installed accurately.

2. The positioning device as described in claim 1, characterized in that, The support member has a receiving groove on the side facing the base, and two movable holes on the side facing away from the base. The two movable holes are respectively connected to the receiving groove and spaced apart from the positioning groove. The positioning groove is connected to the receiving groove, and the two second detection reference parts are respectively movably disposed in the two movable holes. Each of the pushing components includes a pushing member and a first elastic member. The pushing member is slidably connected to the receiving groove and is disposed towards the positioning groove. The two ends of the first elastic member abut against the groove wall of the receiving groove and the end of the pushing member away from the positioning groove, respectively, so that the pushing member elastically pushes the first workpiece against the groove wall of the positioning groove.

3. The positioning device as described in claim 2, characterized in that, The support member is also provided with a welding groove, which is located at the bottom of the receiving groove and communicates with the positioning groove. The base has a welding clearance groove that communicates with the receiving groove. The welding clearance groove is used to avoid the welding groove and the positioning groove.

4. The positioning device as described in claim 1, characterized in that, The support member also has a first smoke exhaust groove on the side away from the base. The first smoke exhaust groove is connected to the positioning groove. The base has a second smoke exhaust groove connected to the first smoke exhaust groove. The cross-sectional area of ​​the second smoke exhaust groove is greater than or equal to the cross-sectional area of ​​the first smoke exhaust groove.

5. The positioning device as described in claim 1, characterized in that, The second positioning mechanism includes multiple fixing members and multiple movable components. The multiple fixing members are respectively arranged near two adjacent sides of the feeding position, and the multiple movable components are respectively arranged near two other adjacent sides of the feeding position. Each movable component includes a movable part and a second elastic part. The movable part is slidably connected to the base. The two ends of the second elastic part abut against the movable part and the base, respectively. The second elastic part is used to push the movable part toward the feeding position, so that the movable part pushes the second workpiece to the corresponding fixing member and thus positions the second workpiece.

6. The positioning device as described in claim 5, characterized in that, Each of the second detection reference parts is provided with a first inclined surface at one end near the positioning groove, so that the external device pushes against the first inclined surface and thus pushes the second detection reference part away from the positioning groove, thereby driving the corresponding pushing member away from the positioning groove. Each of the movable parts is provided with a second inclined surface at one end facing the feeding position, so that the external device pushes against the second inclined surface and thus pushes the movable part away from the feeding position.

7. The positioning device as described in claim 1, characterized in that, The cover plate has multiple detection holes, each of which corresponds to a first detection reference part. Each detection hole also corresponds to the side of the second workpiece adjacent to the first detection reference part, so as to expose the first detection reference part and the side of the second workpiece so that the detection mechanism can detect the position of the second workpiece.

8. The positioning device as described in claim 1, characterized in that, The base has a plurality of positioning pins on the side facing the cover plate, and the cover plate has a plurality of positioning holes corresponding one-to-one with the plurality of positioning pins. When the cover plate is placed on the base, the positioning pins are inserted into the corresponding positioning holes to position the cover plate.

9. The positioning device as described in claim 1, characterized in that, The base is also provided with a plurality of snap-fit ​​components on the side facing the cover plate, and each snap-fit ​​component is provided with a snap-fit ​​protrusion extending in a direction parallel to the plane of the base. The cover plate is provided with a plurality of retaining components corresponding one-to-one with the plurality of retaining members. Each retaining component includes a retaining member and a third elastic member. The retaining member is slidably connected to the cover plate. The two ends of the third elastic member abut against the retaining member and the cover plate respectively. The third elastic member is used to push the retaining member toward the retaining protrusion so that the retaining member engages with the retaining protrusion, thereby locking the cover plate and the base.

10. A welding device, characterized in that, It includes a laser and a positioning device as described in any one of claims 1-9, wherein the laser is used to weld the first workpiece to the second workpiece.

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