A flexible high-precision positioning fixture and automatic laser welding equipment

Abstract

The present invention aims to provide a flexible high-precision positioning fixture with good clamping effect, high positioning accuracy and little damage to the product, and also provides an automatic laser welding device with high work efficiency and the ability to significantly reduce the labor intensity of workers. The flexible high-precision positioning fixture includes a fixture seat, a pressure cover and a floating seat. The fixture seat is provided with a positioning groove, through which the positioning pen body is placed, the pressure cover presses and fixes the product, and the floating seat is provided with positioning fingers to fix the fixed iron sheet; the automatic laser welding equipment includes a Y-axis moving mechanism, a YZ two-axis moving mechanism, two X-axis linear modules, a height measuring instrument, a CCD camera and a laser welder. The two X-axis linear modules are provided with flexible high-precision positioning fixtures as loading and unloading stations to work alternately, and then cooperate with various components to achieve automatic welding. The present invention is applied to the technical field of welding processing.

Description

Technical Field

[0001] The invention relates to the technical field of welding processing, and in particular to a flexible high-precision positioning fixture and automatic laser welding equipment. Background Art

[0002] A capacitive pen is a pen made of conductive material with conductive properties, used to touch the capacitive screen to complete human-computer dialogue operations. It is a kind of auxiliary device that uses conductive materials to imitate the human body (usually fingers) to complete human-computer dialogue. In order to improve the functionality of the capacitive pen, a magnet slot is generally opened on the pen body of the capacitive pen for the installation of the magnet. Before installing the magnet, it is necessary to weld and fix a fixed iron sheet in the magnet slot so that the magnet can obtain a more easily installed installation position.

[0003] In order to ensure the smooth welding of the fixed iron sheet, the pen body needs to be fixed during welding. The current commonly used method is to clamp one or both ends of the pen body through a clamping structure and then weld. However, such a structure has poor positioning accuracy for the pen body and the fixed iron sheet, and is easy to cause damage to the pen body. In addition, the fixed iron sheet is generally welded manually during welding, which has high labor intensity and relatively low work efficiency, and has limitations. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a flexible high-precision positioning fixture with good clamping effect, high positioning accuracy and little damage to the product. At the same time, it also provides an automatic laser welding equipment with high working efficiency and the ability to significantly reduce the labor intensity of workers.

[0005] The technical solution adopted by the present invention is: the flexible high-precision positioning fixture includes a jig seat, a pressure cover and a floating seat, the jig seat is provided with a positioning groove, the pressure cover is hinged to the jig seat and cooperates with the positioning groove, the floating seat is arranged to float upward at the lower end of the jig seat, the jig seat is provided with a plurality of welding through grooves connected to the positioning groove, the floating seat is provided with a plurality of clearance through grooves cooperating with the welding through grooves, the floating seat is provided with a plurality of positioning fingers surrounding the clearance through grooves, and the positioning fingers cooperate with the welding through grooves and the positioning grooves.

[0006] Furthermore, a transverse positioning component is provided on the right side of the jig seat, and the transverse positioning component includes a positioning seat, a sliding shaft, a pen pushing member, a hand breaking block and a floating spring. The sliding shaft is slidably arranged in the positioning seat, the pen pushing member is arranged at the left end of the sliding shaft and is located in the positioning groove, the hand breaking block is hinged at the right end of the sliding shaft and cooperates with the right side surface of the positioning seat, the floating spring is sleeved on the sliding shaft and is located between the pen pushing member and the positioning seat, and a limiting protrusion is provided on the left side of the jig seat, and the limiting protrusion is located in the positioning groove.

[0007] Furthermore, a plurality of mounting grooves are provided on the floating seat surrounding the clearance groove, an opening is provided on one side of the mounting groove to communicate with the clearance groove, a floating block is provided in the mounting groove, the floating block floats upward by a plurality of first equal-height screws and a plurality of first springs, each of the floating blocks is provided with the positioning finger, and the positioning finger enters the clearance groove through the opening.

[0008] Furthermore, the floating seat is arranged at the lower end of the fixture seat to float upward by means of a plurality of second equal-height screws and a plurality of second springs, and snap-fit ​​components are arranged on both sides of the floating seat, and the snap-fit ​​components include a snap-fit ​​seat, a snap-fit ​​plate, a snap-fit ​​shaft and a reset spring, and a snap-fit ​​groove is arranged on the snap-fit ​​seat, and the middle part of the snap-fit ​​plate is hinged in the snap-fit ​​groove through the snap-fit ​​shaft, and a fixed hook is arranged at the upper end of the snap-fit ​​plate, and the reset spring is arranged at the lower end of the snap-fit ​​groove and its two ends are respectively connected to the snap-fit ​​seat and the lower end of the snap-fit ​​plate.

[0009] Furthermore, side pressure grooves are provided at both ends of the fixture seat, the side pressure grooves are located on one side of the positioning groove and are connected to the positioning groove, and side pressure blocks are floatingly arranged in the side pressure grooves, and the side pressure blocks float toward one side of the positioning groove through a plurality of third equal-height screws and a plurality of third springs.

[0010] Furthermore, a floating pressure plate is floatingly arranged on the lower end surface of the pressure cover, and the floating pressure plate floats downward by means of a plurality of fourth equal-height screws and a plurality of fourth springs, hinge strips are arranged on both sides of the rear end of the jig seat, and leveling blocks are arranged on both sides of the front end of the jig seat, the rear end of the pressure cover is hinged to the two hinge strips, and the front end of the pressure cover cooperates with the two leveling blocks.

[0011] Furthermore, lower hook pieces are provided at both ends of the front side of the fixture seat, upper floating blocks are provided at both ends of the front side of the pressure cover, upper hook pieces are hinged on the upper floating blocks, and a hook matching with the lower hook piece is provided at the lower end of the upper hook piece.

[0012] Automatic laser welding equipment comprises a Y-axis moving mechanism, a YZ biaxial moving mechanism, two X-axis linear modules, a height measuring instrument, a CCD camera and a laser welder, wherein the two X-axis linear modules are arranged in parallel and the flexible high-precision positioning fixture is arranged on the action end, the Y-axis moving mechanism and the YZ biaxial moving mechanism are arranged in front and back arrangement, the height measuring instrument is arranged at the action end of the Y-axis moving mechanism, the CCD camera and the laser welder are arranged at the action end of the YZ biaxial moving mechanism, and the height measuring instrument, the CCD camera and the laser welder are all located above the flexible high-precision positioning fixture and cooperate with the flexible high-precision positioning fixture.

[0013] Furthermore, a nitrogen blowing component is provided on one side of the two X-axis linear modules, and an exhaust gas collection component is provided on one side of the nitrogen blowing component. The nitrogen blowing component and the exhaust gas collection component are both matched with the flexible high-precision positioning fixture. The nitrogen blowing component includes a component mounting seat, a Y-axis driving cylinder, a Z-axis driving cylinder and a profiling block. The Y-axis driving cylinder is arranged on the component mounting seat, the Z-axis driving cylinder is arranged at the output end of the Y-axis driving cylinder, and the profiling block is arranged at the output end of the Z-axis driving cylinder. Insertion blocks adapted to the make way groove are arranged on both sides of the lower end of the profiling block, and a vertical through groove is opened on the insert block. A nitrogen valve is arranged on the profiling block, and the blowing end of the nitrogen valve is connected to the vertical through groove through an air path opened inside the profiling block, and the air receiving end of the nitrogen valve is externally connected to a nitrogen source.

[0014] Furthermore, a placing table is provided on the X-axis linear module, and two placing and positioning blocks are diagonally provided on the placing table, and guide pins and matching magnets are provided on the two placing and positioning blocks. Two placing and positioning grooves matching with the two placing and positioning blocks are provided diagonally on the pressure cover, and two guide pin sleeves are provided on the fixture seat, and a connecting magnet is provided on one side of the guide pin sleeve, and the two guide pin sleeves are adapted to the two guide pins, and the two matching magnets are matched with the two connecting magnets.

[0015] The beneficial effects of the present invention are as follows: the flexible high-precision positioning fixture comprises a fixture seat, a pressure cover and a floating seat, the pressure cover is hinged at the upper end of the fixture seat, the floating seat is arranged to float upward at the lower end of the fixture seat, a positioning groove is provided on the upper end surface of the fixture seat for placing and positioning the pen body, a welding through groove is provided on the fixture seat to communicate with the positioning groove, a clearance through groove is provided on the floating seat to cooperate with the welding through groove, and a positioning finger is arranged around the clearance through groove on the floating seat to cooperate with the positioning groove; when in use, the fixed iron sheet is firstly adhered to the magnet groove of the pen body by adhesive tape to realize rough positioning, and then the pen body is placed in the positioning groove according to the downward state of the magnet groove, and then the pressure cover is covered, the fixed iron sheet will be pressed by multiple positioning fingers and pressed against the magnet groove to realize precise positioning, and the fixing of the pen body is realized by pressing down the pressure cover as a whole, and the overall structure of the pen body is fixed, so that the damage of the pen body caused by local clamping can be avoided, and the whole fixture is placed upside down during welding, and the welding equipment is enabled to perform welding work through the clearance through groove and the welding through groove. The automatic laser welding equipment includes a Y-axis moving mechanism, a YZ biaxial moving mechanism, two X-axis linear modules, a height measuring instrument, a CCD camera and a laser welder. The number of the X-axis linear modules is two and the action ends can be used for the placement of the flexible high-precision positioning fixture, and are used to drive the flexible high-precision positioning fixture to move in the X-axis direction, thereby realizing loading and unloading. The Y-axis moving mechanism is used to drive the height measuring instrument to move in the Y-axis direction, thereby measuring the welding height of the pen body and the fixed iron sheet in the flexible high-precision positioning fixture, so as to facilitate welding. The YZ biaxial moving mechanism is used to drive the CCD camera and the laser welder to move only in the Y-axis and Z-axis directions, thereby locating the plane position of the welding and performing welding work. When working, the worker only needs to perform alternate loading and unloading work, and the welding work is realized by the automated action of other mechanisms, which can greatly reduce the labor intensity of the workers. At the same time, since two X-axis linear modules are used for alternate loading and unloading work, waiting time can be saved and work efficiency can be improved. It can be seen from the above that the flexible high-precision positioning fixture of the present invention has the advantages of good clamping effect, high positioning accuracy and little damage to the product, and the automatic laser welding equipment has the advantages of high work efficiency and the ability to significantly reduce the labor intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the flexible high-precision positioning fixture of the present invention;

[0017] Figure 2 is a schematic diagram of the three-dimensional structure of the flexible high-precision positioning fixture of the present invention from another angle;

[0018] Figure 3 yes Figure 2 A magnified view of part A;

[0019] Figure 4 is an exploded view of the flexible high-precision positioning fixture of the present invention;

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the floating seat and corresponding components in the flexible high-precision positioning fixture of the present invention;

[0021] Figure 6 It is an exploded view of the snap-fit ​​assembly in the flexible high-precision positioning fixture of the present invention;

[0022] Figure 7 It is an exploded view of the lateral positioning component in the flexible high-precision positioning fixture of the present invention;

[0023] Figure 8 It is a schematic diagram of the three-dimensional structure of the automatic laser welding equipment of the present invention;

[0024] Fig. 9 It is a schematic diagram of the three-dimensional structure of the automatic laser welding equipment of the present invention without the cabinet;

[0025] Fig.10 It is a schematic diagram of the cooperation between the X-axis linear module and the flexible high-precision positioning fixture in the automatic laser welding equipment of the present invention;

[0026] Fig.11 It is a three-dimensional structural schematic diagram of a positioning block placed in an X-axis linear module in the automatic laser welding equipment of the present invention;

[0027] Fig.12 It is a three-dimensional structural schematic diagram of the nitrogen blowing assembly in the automatic laser welding equipment of the present invention;

[0028] Fig.13 It is a top view of the profiling block in the automatic laser welding equipment of the present invention. DETAILED DESCRIPTION

[0029] like Figures 1 to 7As shown, in the present embodiment, the flexible high-precision positioning fixture comprises a jig seat 1, a pressure cover 2 and a floating seat 3, the jig seat 1 is provided with a positioning groove 4, the pressure cover 2 is hinged to the jig seat 1 and cooperates with the positioning groove 4, the floating seat 3 is arranged to float upward at the lower end of the jig seat 1, the jig seat 1 is provided with a plurality of welding grooves 5 connected with the positioning groove 4, the floating seat 3 is provided with a plurality of clearance grooves 6 cooperating with the welding grooves 5, and the floating seat 3 is provided with a plurality of positioning fingers 7 surrounding the clearance grooves 6, and the positioning fingers 7 cooperate with the welding grooves 5 and the positioning grooves 4. The upper end surface of the jig seat 1 is provided with a transverse through positioning groove 4, and the positioning groove 4 is used for positioning and placing the pen body; the rear end of the pressure cover 2 is hinged to the jig seat 1 so that a pressing action can be performed, thereby clamping and fixing the pen body placed in the positioning groove 4; the floating seat 3 is arranged to float upward at the lower end of the jig seat 1, and the lower end of the jig seat 1 is provided with a groove for the installation of the floating seat 3, so that the lower end surface of the floating seat 3 is flush with the lower end surface of the jig seat 1 under normal conditions; the number of the welding through grooves 5 is two, which are respectively located at the left and right ends of the jig seat 1 and are connected to the positioning groove 4 to correspond to the two welding points of the pen body, so The welding through groove 5 is used to enable the welding laser to reach the welding point between the pen body and the fixed iron sheet during welding; the number of the making way through grooves 6 is two, which are respectively located at the left and right ends of the floating seat 3 and correspond to the two welding through grooves 5, so that the welding laser can reach the welding point between the pen body and the fixed iron sheet during welding; the number of the positioning fingers 7 is six, each of the making way through grooves 6 is surrounded by three of the positioning fingers 7, and the six positioning fingers 7 are stacked, that is, one on the inside and two on the outside, and the positioning fingers 7 pass through the welding through groove 5 and cooperate with the positioning groove 4, thereby pressing the two ends of the fixed iron sheet, thereby ensuring the precise positioning of the fixed iron sheet. When in use, the fixed iron sheet is firstly adhered to the magnet slot of the pen body by means of adhesive tape to achieve rough positioning, and then the pen body is placed in the positioning slot 4 with the magnet slot facing downward, and then the pressure cover 2 is put on, and the fixed iron sheet will be pressed by multiple positioning fingers 7 and pressed against the magnet slot to achieve precise positioning, and the pen body is fixed by pressing down the pressure cover 2 as a whole, and the overall structure of the pen body is fixed, so that damage to the pen body caused by local clamping can be avoided, and the entire fixture is placed upside down during welding, and the welding equipment can perform welding work by making way for the through slot 6 and the welding through slot 5. As can be seen from the above, the overall structure of the present invention is compact, the clamping effect is good, the positioning accuracy is high, and the damage to the product can be greatly reduced.

[0030] In this embodiment, a transverse positioning component 8 is provided on the right side of the jig seat 1, and the transverse positioning component 8 includes a positioning seat 81, a sliding shaft 82, a pen pushing member 83, a hand breaking block 84 and a floating spring 85. The sliding shaft 82 is slidably set in the positioning seat 81, the pen pushing member 83 is set at the left end of the sliding shaft 82 and is located in the positioning groove 4, the hand breaking block 84 is hinged at the right end of the sliding shaft 82 and cooperates with the right side surface of the positioning seat 81, the floating spring 85 is sleeved on the sliding shaft 82 and is located between the pen pushing member 83 and the positioning seat 81, and a limiting protrusion 9 is provided on the left side of the jig seat 1, and the limiting protrusion 9 is located in the positioning groove 4. The transverse positioning assembly 8 is used to position the pen body transversely, and the transverse positioning assembly 8 includes a positioning seat 81, a sliding shaft 82, a pen pushing member 83, a hand breaking block 84 and a floating spring 85; under normal conditions, the pen pushing member 83 exerts force to the left under the force of the floating spring 85, and if a pen body is placed in the positioning groove 4, it will be pushed to the left by the pen pushing member 83, and the left end of the pen body can be limited by the limiting protrusion 9 in the left end of the positioning groove 4. Therefore, the pen body will be pushed against the side of the limiting protrusion 9 under the pushing action of the pen pushing member 83, thereby achieving transverse positioning. When taking or placing the pen body, it is only necessary to bend the hand-breaking block 84 so that the arc side surface of the hand-breaking block 84 abuts against the right side surface of the positioning seat 81, thereby pulling the sliding shaft 82 to move to the right, and the pen-pushing member 83 moves to the right while compressing the floating spring 85, and remains stationary under the action of the hand-breaking block 84, so as to place the pen body; when it is necessary to position the pen body, it is only necessary to bend the hand-breaking block 84 back so that its flat side surface fits the right side surface of the positioning seat 81, and at this time, the pen-pushing member 83 will tighten the pen body under the action of the floating spring 85. As can be seen from the above, through the joint action of the lateral positioning component 8 and the limiting protrusion 9, the pen body can be positioned laterally, and the operation is simple, the structure for tightening or loosening the pen body is simple, and the operation is also very convenient and fast.

[0031] In this embodiment, the floating seat 3 is provided with a plurality of mounting grooves 10 around the clearance groove 6, one side of the mounting groove 10 is provided with an opening 11 connected with the clearance groove 6, a floating block 12 is provided in the mounting groove 10, the floating block 12 floats upwards through a plurality of first equal height screws and a plurality of first springs, each of the floating blocks 12 is provided with the positioning finger 7, and the positioning finger 7 enters the clearance groove 6 through the opening 11. There are three mounting grooves 10, each of the mounting grooves 10 is provided with the opening 11 connected with the clearance groove 6, the floating block 12 floats upwards in the mounting groove 10 through two first equal height screws and two first springs, the three positioning fingers 7 arranged around the same clearance groove 6 are arranged on three floating blocks 12 respectively, and the positioning finger 7 enters the clearance groove 6 through the opening 11 and passes through the welding groove 5 to cooperate with the positioning groove 4. It can be seen from the above that the positioning finger 7 has an upward floating effect, and can play a flexible positioning role on the fixed iron sheet, which not only ensures the positioning of the fixed iron sheet, but also ensures that its own structure will not be damaged. At the same time, it has a certain fault tolerance rate and has a better positioning effect.

[0032] In this embodiment, the floating seat 3 is floated upward at the lower end of the fixture seat 1 by a plurality of second equal-height screws 13 and a plurality of second springs 131. A snap-fit ​​assembly 14 is provided on both sides of the floating seat 3. The snap-fit ​​assembly 14 includes a snap-fit ​​seat 141, a snap-fit ​​sheet 142, a snap-fit ​​shaft 143 and a reset spring 144. A snap-fit ​​groove 145 is provided on the snap-fit ​​seat 141. The middle part of the snap-fit ​​sheet 142 is hinged in the snap-fit ​​groove 145 through the snap-fit ​​shaft 143. A fixed hook 146 is provided at the upper end of the snap-fit ​​sheet 142. The reset spring 144 is provided at the lower end of the snap-fit ​​groove 145 and its two ends are respectively connected to the snap-fit ​​seat 141 and the lower end of the snap-fit ​​sheet 142. The floating seat 3 is floatingly set at the lower end of the jig seat 1 by four second equal-height screws 13 and four second springs 131, and two linear bearings are diagonally arranged. The two linear bearings are adapted to the two linear guide shafts diagonally arranged at the lower end of the jig seat 1 to play a guiding and positioning role, making the movement of the floating seat 3 more precise. The front and rear sides of the floating seat 3 are provided with the snap-fitting components 14, which are snapped on the upper end surface of the jig seat 1 by the snap-fitting components 14 so that the floating seat 3 can fit upward; the snap-fitting components 14 include a snap-fitting seat 141, a snap-fitting piece 142, a snap-fitting shaft 143 and a reset spring 144, and the snap-fitting piece 142 is rotated through the snap-fitting shaft 143 to the middle of the snap-fitting groove 145 arranged on the snap-fitting seat 141, so that the upper and lower ends can rotate relative to each other. The upper end of the locking piece 142 is provided with the fixed hook 146 for cooperating with the upper end surface of the jig seat 1, so that it can be buckled on the jig seat 1, so that the floating seat 3 can be attached to the lower end of the jig seat 1, so that the positioning finger 7 can press the notebook and the fixed iron sheet placed in the positioning groove 4, and the reset spring 144 provides an elastic force to the lower end of the locking piece 142, so that the lower end of the locking piece 142 is kept pushed outward, so that the upper end of the locking piece 142 moves inward at all times, so that the fixed hook 146 can be tightly buckled on the jig seat 1, and when the buckle needs to be released, it can be done by pressing the lower end of the locking piece 142 inward, and due to the floating effect of the floating seat 3, once the lower end of the locking piece 142 is pressed, the floating seat 3 will immediately move down. As can be seen from the above, the floating seat 3 can smoothly cooperate with the fixture seat 1 through the two sets of the snap-fit ​​components 14, thereby achieving high-precision alignment, and is very convenient to operate and can be operated quickly.

[0033] In this embodiment, side pressure grooves 15 are provided at both ends of the fixture seat 1. The side pressure grooves 15 are located at one side of the positioning groove 4 and are connected to the positioning groove 4. A side pressure block 16 is provided in the side pressure groove 15 so as to float. The side pressure block 16 floats toward one side of the positioning groove 4 through a plurality of third equal height screws 17 and a plurality of third springs 18. Side pressure grooves 15 are provided at both left and right ends of the fixture seat 1. Two side pressure grooves 15 are located at the rear side of the positioning groove 4 and the upper end is connected to the positioning groove 4. A side pressure block 16 is provided in the positioning groove 4 so as to float forward. The side pressure block 16 obtains a floating effect through two third equal height screws 17 and two third springs 18, so that it can be pressed forward at all times. A guide slope is provided at the front side of the upper end of the side pressure block 16. Through the guide slope, it can be pressed down by force when placing the pen body. After the pen body is placed, the side pressure block 16 can be pressed forward to only press and position the pen body, thereby improving the positioning accuracy of the pen body.

[0034] In this embodiment, a floating pressure plate 19 is floatingly provided on the lower end surface of the pressure cover 2, and the floating pressure plate 19 floats downward through a plurality of fourth equal-height screws 20 and a plurality of fourth springs 21. Both sides of the rear end of the fixture seat 1 are provided with hinge strips 22, and both sides of the front end of the fixture seat 1 are provided with leveling blocks 23. The rear end of the pressure cover 2 is hinged to the two hinge strips 22, and the front end of the pressure cover 2 cooperates with the two leveling blocks 23. The floating pressure plate 19 obtains a downward floating effect through four fourth equal-height screws 20 and six fourth springs 21. Therefore, when the pressure cover 2 is pressed together, the floating pressure plate 19 presses the pen body. Due to the floating effect, the probability of crushing the pen body can be greatly reduced, and a certain protective effect is achieved. The rear end of the pressure cover 2 is hinged to the two hinge strips 22, and the front end is placed on the two flush blocks 23 during pressing, so that the pressure cover 2 can remain horizontal during pressing. Therefore, when the entire jig is inverted in the placement position during use, it can be used as a reference surface to ensure the positioning of the welding work. At the same time, a gap is provided between the pressure cover 2 and the jig seat 1, so that the snap-fit ​​assembly 14 can be smoothly snapped onto the jig seat 1.

[0035] In this embodiment, lower hook pieces 24 are provided at both ends of the front side of the fixture seat 1, upper floating blocks 25 are provided at both ends of the front side of the pressure cover 2, upper hook pieces 26 are hingedly connected to the upper floating blocks 25, and the lower end of the upper hook piece 26 is provided with a hook that cooperates with the lower hook piece 24. The pressure cover 2 can be fixedly pressed on the fixture seat 1 through the cooperation between the upper hook piece 26 and the lower hook piece 24, and the upper hook piece 26 is floatingly arranged through the upper floating block 25, and is also hingedly cooperated with the upper floating block 25, so it can be very convenient to cooperate with the lower hook piece 24.

[0036] like Figures 8 to 13 As shown, in this embodiment, the automatic laser welding equipment includes a Y-axis moving mechanism 51, a YZ biaxial moving mechanism 52, two X-axis linear modules 53, a height measuring instrument 54, a CCD camera 55 and a laser welder 56. The two X-axis linear modules 53 are arranged in parallel and the flexible high-precision positioning fixture is arranged on the action end. The Y-axis moving mechanism 51 and the YZ biaxial moving mechanism 52 are arranged in a front-to-back arrangement. The height measuring instrument 54 is arranged at the action end of the Y-axis moving mechanism 51. The CCD camera 55 and the laser welder 56 are both arranged at the action end of the YZ biaxial moving mechanism 52. The height measuring instrument 54, the CCD camera 55 and the laser welder 56 are all located above the flexible high-precision positioning fixture and cooperate with the flexible high-precision positioning fixture. The automatic laser welding equipment includes a Y-axis moving mechanism 51, a YZ two-axis moving mechanism 52, two X-axis linear modules 53, a height measuring instrument 54, a CCD camera 55 and a laser welder 56. The two X-axis linear modules 53 are arranged in parallel and the flexible high-precision positioning fixture is arranged on the action end. Therefore, in actual work, it is possible to alternately load and unload materials, thereby reducing waiting time and improving work efficiency. The height measuring instrument 54 is arranged on the Y-axis moving mechanism 51 and is driven by the Y-axis moving mechanism 51 to move left and right. The height measuring instrument 54 is located above the flexible high-precision positioning fixture, so as to The welding height of the pen body and the fixed iron sheet in the positioning fixture is measured to obtain the Z-axis distance of the welding. The CCD camera 55 and the laser welder 56 are both arranged on the YZ two-axis moving mechanism 52 and driven by the YZ two-axis moving mechanism 52 to move in four directions of up, down, left and right. The CCD camera 55 is used to planarly locate the welding position of the pen body and the fixed iron sheet placed in the flexible high-precision positioning fixture, so as to cooperate with the height measured by the height measuring instrument 54 to determine the welding stroke. The laser welder 56 is driven by the YZ two-axis moving mechanism 52 to move according to the welding stroke to perform welding work on the welding position. When working, the worker only needs to perform alternate loading and unloading work, and the welding work is realized by the automated action of other mechanisms, which can greatly reduce the labor intensity of the workers. At the same time, since two X-axis linear modules 53 are used for alternate loading and unloading work, waiting time can be saved and work efficiency can be improved. As can be seen from the above, the automatic laser welding equipment has the advantages of high work efficiency and can greatly reduce the labor intensity of workers. In addition, the automatic laser welding equipment also includes a cabinet, and the above-mentioned various components are arranged in the cabinet.

[0037] In this embodiment, a nitrogen blowing assembly 57 is provided on one side of the two X-axis linear modules 53, and an exhaust gas collection assembly 58 is provided on one side of the nitrogen blowing assembly 57. The nitrogen blowing assembly 57 and the exhaust gas collection assembly 58 are both matched with the flexible high-precision positioning fixture. The nitrogen blowing assembly 57 includes an assembly mounting seat 571, a Y-axis driving cylinder 572, a Z-axis driving cylinder 573 and a profiling block 574. The Y-axis driving cylinder 572 is arranged on the assembly mounting seat 571, and the Z-axis driving cylinder 573 is arranged on the Z-axis driving cylinder 574. It is arranged at the output end of the Y-axis driving cylinder 572, and the profiling block 574 is arranged at the output end of the Z-axis driving cylinder 573. Insertion blocks 575 adapted to the make way slot 6 are arranged on both sides of the lower end of the profiling block 574. A vertical through slot 576 is opened on the insertion block 575. A nitrogen valve 577 is arranged on the profiling block 574. The blowing end of the nitrogen valve 577 is connected to the vertical through slot 576 through an air path opened inside the profiling block 574, and the air connecting end of the nitrogen valve 577 is connected to an external nitrogen source. The nitrogen blowing assembly 57 is used to blow the welding position, so as to improve the welding quality. The exhaust gas collecting assembly 58 is used to collect the exhaust gas, so as to collect and treat the exhaust gas generated during welding, avoid environmental pollution, and ensure the cleanliness of the working environment. The nitrogen blowing assembly 57 includes an assembly mounting seat 571, a Y-axis driving cylinder 572, a Z-axis driving cylinder 573 and a profiling block 574. The Y-axis driving cylinder 572 is used to drive the profiling block 574 to move in the Y-axis direction, that is, to move left and right. The Z-axis driving cylinder 573 is used to drive the profiling block 574 to move in the Z-axis direction, that is, to move up and down. The lower part of the profiling block 574 The end is integrally formed with two insertion blocks 575, and the two insertion blocks 575 cooperate with the two clearance grooves 6 and the two welding grooves 5 of the floating seat 3 in the flexible high-precision positioning fixture, and the position relationship corresponds and the size is also adapted, so that they can be inserted into the clearance grooves 6 and the welding grooves 5. The vertical groove 576 is vertically penetrated and opened on the insertion block 575, so that the welding laser of the laser welder 56 can smoothly weld the welding position. The nitrogen valve 577 is arranged on the profiling block 574, and an air path is arranged inside the profiling block 574 to communicate with the vertical groove 576 so that nitrogen can be blown in smoothly, thereby ensuring the welding quality.

[0038] In this embodiment, a placement table 531 is provided on the X-axis linear module 53, and two placement positioning blocks 532 are diagonally provided on the placement table 531. Guide pins 533 and matching magnets 534 are provided on the two placement positioning blocks 532. Two placement positioning grooves 27 matching the two placement positioning blocks 532 are diagonally provided on the pressure cover 2. Two guide pin sleeves 28 are provided on the fixture seat 1. A connecting magnet 29 is provided on one side of the guide pin sleeve 28. The two guide pin sleeves 28 are adapted to the two guide pins 533, and the two matching magnets 534 are matched with the two connecting magnets 29. The placement table 531 is arranged on the action end of the X-axis linear module 53, and is used for placing the flexible high-precision positioning fixture; two placement positioning blocks 532 are arranged on the placement table 531, and the two placement positioning blocks 532 are provided with guide pins 533 and matching magnets 534, and two placement positioning grooves 27 are arranged on the pressure cover 2 of the flexible high-precision positioning fixture, so that it can be embedded in the two placement positioning blocks 532, and two guide pin sleeves 28 and two connecting magnets 29 are arranged diagonally on the upper end of the fixture seat 1, and the two guide pin sleeves 28 and the two connecting magnets 29 correspond to the placement positioning grooves 27, so when When the flexible high-precision positioning fixture is placed upside down on the placement table 531, the two placement positioning blocks 532 are embedded in the two placement positioning grooves 27, and at the same time, the two guide pins 533 are inserted into the two guide pin sleeves 28, and the two matching magnets 534 and the two connecting magnets 29 are attracted to each other; therefore, it can be seen from the above that the flexible high-precision positioning fixture can be accurately placed on the placement table 531, and has good positioning effect and strong fixing ability. Five of the six degrees of freedom are restricted, and upward movement requires overcoming a certain magnetic force. Therefore, it can meet the needs of welding work and can facilitate workers to carry out loading and unloading operations.

[0039] The working principle of the flexible high-precision positioning fixture and the automatic laser welding equipment described in the present invention is: before welding, the worker first takes one of the flexible high-precision positioning fixtures, opens the pressure cover 2, puts in the pen body and the fixed iron sheet (the fixed iron sheet is glued to the pen body in advance), then presses the pressure cover 2 and fastens it, then pushes the floating seat 3 up and fastens it on the fixture seat 1 through the fastening component 14. At this time, the fixed iron sheet will be pressed at both ends by three positioning fingers 7. After the loading is completed, the worker places the flexible high-precision positioning fixture upside down on the placement table 531 on one of the X-axis linear modules 53, and the X-axis linear module 53 drives the welding work. While the welding work is in progress, the worker simultaneously performs the loading work of another flexible high-precision positioning fixture. After the loading of the second flexible high-precision positioning fixture is completed, the welding work of the first flexible high-precision positioning fixture is completed and sent out. The worker then takes it out and pulls down the finished product and then performs the second loading work; such repeated actions can achieve uninterrupted operation.

[0040] Although the embodiments of the present invention are described with practical solutions, they do not constitute limitations on the meaning of the present invention. For those skilled in the art, it is obvious to modify the implementation scheme and combine it with other solutions based on this description.

Claims

1. An automatic laser welding device, comprising a flexible high-precision positioning fixture, characterized in that: The flexible high-precision positioning fixture comprises a fixture seat (1), a pressure cover (2) and a floating seat (3); the fixture seat (1) is provided with a positioning groove (4); the pressure cover (2) is hinged to the fixture seat (1) and cooperates with the positioning groove (4); the floating seat (3) is arranged to float upward at the lower end of the fixture seat (1); the fixture seat (1) is provided with a plurality of welding grooves (5) connected to the positioning groove (4); the floating seat (3) is provided with a plurality of clearance grooves (6) cooperating with the welding grooves (5); the floating seat (3) is provided with a plurality of positioning fingers (7) surrounding the clearance grooves (6); the positioning fingers (7) are connected to the welding grooves (5) and the positioning grooves (4); The automatic laser welding equipment further comprises a Y-axis moving mechanism (51), a YZ biaxial moving mechanism (52), two X-axis linear modules (53), a height measuring instrument (54), a CCD camera (55) and a laser welder (56); the two X-axis linear modules (53) are arranged in parallel and the flexible high-precision positioning fixture is arranged on the action end; the Y-axis moving mechanism (51) and the YZ biaxial moving mechanism (52) are arranged in a front-to-back arrangement; the height measuring instrument (54) is arranged at the action end of the Y-axis moving mechanism (51); the CCD camera (55) and the laser welder (56) are both arranged at the action end of the YZ biaxial moving mechanism (52); The height measuring instrument (54), the CCD camera (55) and the laser welder (56) are all located above the flexible high-precision positioning fixture and cooperate with the flexible high-precision positioning fixture; a nitrogen blowing assembly (57) is provided on one side of the two X-axis linear modules (53); a waste gas collection assembly (58) is provided on one side of the nitrogen blowing assembly (57); the nitrogen blowing assembly (57) and the waste gas collection assembly (58) are both cooperated with the flexible high-precision positioning fixture; the nitrogen blowing assembly (57) comprises an assembly mounting seat (571), a Y-axis driving cylinder (572), a Z-axis driving cylinder (573) and a profiling block (574); the Y-axis driving cylinder (572) The Z-axis driving cylinder (573) is arranged on the output end of the Y-axis driving cylinder (572), the profiling block (574) is arranged at the output end of the Z-axis driving cylinder (573), both sides of the lower end of the profiling block (574) are provided with insertion blocks (575) adapted to the clearance groove (6), the insertion block (575) is provided with a vertical groove (576), the profiling block (574) is provided with a nitrogen valve (577), the blowing end of the nitrogen valve (577) is connected to the vertical groove (576) via a gas path provided inside the profiling block (574), and the gas connection end of the nitrogen valve (577) is connected to an external nitrogen source.

2. The automatic laser welding equipment according to claim 1, characterized in that: A lateral positioning component (8) is arranged on the right side of the fixture seat (1), and the lateral positioning component (8) comprises a positioning seat (81), a sliding shaft (82), a pen-pushing member (83), a hand-breaking block (84) and a floating spring (85). The sliding shaft (82) is slidably arranged in the positioning seat (81), the pen-pushing member (83) is arranged at the left end of the sliding shaft (82) and is located in the positioning groove (4), the hand-breaking block (84) is hinged to the right end of the sliding shaft (82) and cooperates with the right side surface of the positioning seat (81), the floating spring (85) is sleeved on the sliding shaft (82) and is located between the pen-pushing member (83) and the positioning seat (81), and a limiting protrusion (9) is arranged on the left side of the fixture seat (1), and the limiting protrusion (9) is located in the positioning groove (4).

3. The automatic laser welding equipment according to claim 1, characterized in that: The floating seat (3) is provided with a plurality of mounting grooves (10) surrounding the clearance groove (6); one side of the mounting groove (10) is provided with an opening (11) connected to the clearance groove (6); a floating block (12) is arranged in the mounting groove (10); the floating block (12) floats upwards through a plurality of first equal height screws and a plurality of first springs; each of the floating blocks (12) is provided with a positioning finger (7); the positioning finger (7) enters the clearance groove (6) through the opening (11).

4. The automatic laser welding equipment according to claim 1, characterized in that: The floating seat (3) is arranged at the lower end of the fixture seat (1) in an upward floating manner through a plurality of second equal-height screws (13) and a plurality of second springs (131). A snap-fit ​​assembly (14) is arranged on both sides of the floating seat (3). The snap-fit ​​assembly (14) comprises a snap-fit ​​seat (141), a snap-fit ​​sheet (142), a snap-fit ​​shaft (143) and a return spring (144). A snap-fit ​​groove (145) is arranged on the snap-fit ​​seat (141). The middle part of the snap-fit ​​sheet (142) is hinged in the snap-fit ​​groove (145) through the snap-fit ​​shaft (143). A fixing hook (146) is arranged at the upper end of the snap-fit ​​sheet (142). The return spring (144) is arranged at the lower end of the snap-fit ​​groove (145), and the two ends of the return spring (144) are respectively connected to the snap-fit ​​seat (141) and the lower end of the snap-fit ​​sheet (142).

5. The automatic laser welding equipment according to claim 1, characterized in that: Both ends of the fixture seat (1) are provided with side pressure grooves (15), the side pressure grooves (15) are located on one side of the positioning groove (4) and are connected to the positioning groove (4), and a side pressure block (16) is floatingly arranged in the side pressure groove (15), and the side pressure block (16) floats toward one side of the positioning groove (4) through a plurality of third equal-height screws (17) and a plurality of third springs (18).

6. The automatic laser welding equipment according to claim 1, characterized in that: A floating pressure plate (19) is provided on the lower end surface of the pressure cover (2), and the floating pressure plate (19) floats downward via a plurality of fourth equal height screws (20) and a plurality of fourth springs (21). Both sides of the rear end of the fixture seat (1) are provided with hinge strips (22), and both sides of the front end of the fixture seat (1) are provided with leveling blocks (23). The rear end of the pressure cover (2) is hinged to the two hinge strips (22), and the front end of the pressure cover (2) cooperates with the two leveling blocks (23).

7. The automatic laser welding equipment according to claim 1, characterized in that: Both ends of the front side of the fixture seat (1) are provided with lower hook pieces (24), and both ends of the front side of the pressure cover (2) are provided with upper floating blocks (25). The upper floating blocks (25) are hinged with upper hook pieces (26), and the lower ends of the upper hook pieces (26) are provided with hooks that match the lower hook pieces (24).

8. The automatic laser welding equipment according to claim 1, characterized in that: The X-axis linear module (53) is provided with a placement table (531), and two placement positioning blocks (532) are diagonally provided on the placement table (531), and the two placement positioning blocks (532) are both provided with guide pins (533) and matching magnets (534). The pressure cover (2) is provided with two placement positioning grooves (27) matching with the two placement positioning blocks (532) at diagonals, and the fixture seat (1) is provided with two guide pin sleeves (28), and a connecting magnet (29) is provided on one side of the guide pin sleeve (28), and the two guide pin sleeves (28) are matched with the two guide pins (533), and the two matching magnets (534) are matched with the two connecting magnets (29).

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