High-precision automatic welding equipment and method for dial studs

Abstract

The present application relates to the field of watch production, and discloses a high-precision automatic welding device and method for dial studs. The device includes a slide, a shooting component, a laser welding component, and a control component. The slide is provided with a dial fixture for fixing the dial. The shooting component is used to shoot the pre-welding image before the dial is welded with studs. The control component is used to determine the target welding position of the studs according to the pre-welding image and control the slide to move in the horizontal plane according to the target welding position. The control component is also used to control the laser welding component to perform penetration welding on the studs at the target welding position after the slide moves. The dial fixture includes a detachably connected base and a cover plate, the base is provided with a plurality of dial seat holes, the cover plate is provided with a plurality of dial clearance holes that cooperate with the dial seat holes, and the laser welding component performs penetration welding on the studs through the dial clearance holes. The present application can efficiently and firmly install the studs on the guide dial, thereby improving the installation efficiency of the dial studs.

Description

Technical Field

[0001] The present application relates to the technical field of watch production, and more specifically, to a high-precision automatic welding device and method for dial studs. Background Art

[0002] In the field of watch and clock manufacturing, the word pins (also called indicator pins or time marks) on the dial are usually fixed to the dial by bonding. Fixing the word pins by bonding can meet the aesthetic and practical requirements of the watch to a certain extent, but there are many shortcomings. The word pins are easily affected by external forces (such as impact, vibration, etc.) during use, causing the word pins fixed by bonding to easily fall off or shift, affecting the normal function of the watch. At the same time, during long-term wear and use, the fixing stability of the word pins may gradually weaken, causing the word pins to fall off and reduce the service life of the watch. In addition, the traditional method requires high-temperature welding or special adhesives when welding word pins, which has high requirements on operating technology, complex manufacturing process and low production efficiency.

[0003] For example, patent CN209062477U (application number: CN201821479425.5) provides a nail suction device for automatic precision assembly of nails on watch dials, including a frame, a machine plate is provided on the frame, a rotating disc is rotatably installed on the machine plate, a number of nail clamps are evenly distributed on the rotating disc, a support seat is provided at the axis of the rotating disc, a round table plate is installed on the support seat, a number of nail suction manipulators are evenly distributed on the round table plate, a third slide is slidably installed in the vertical direction on the bracket of the nail suction manipulator, a suction nozzle bracket is installed on the third slide, a suction rod is installed on the suction nozzle bracket, a suction nozzle for sucking the nail is provided at the end of the suction rod, and the suction rod is connected to an air joint, and the air joint is connected to an air pipe. The nail suction manipulator in patent CN209062477U cooperates with the nail clamp to realize automatic assembly, but it still cannot ensure that the nails are firmly installed on the dial, and the installation efficiency of the nails is low. Summary of the invention

[0004] The purpose of this application is to provide a high-precision automatic welding device and method for dial studs, which solves the technical problems of not being able to ensure that the studs are firmly installed on the dial and the low installation efficiency of the studs, and achieves the technical effect of being able to efficiently and firmly install the studs on the dial.

[0005] A high-precision automatic welding device for dial studs provided in an embodiment of the present application includes a slide, a shooting component, a laser welding component and a control component. The slide is provided with a dial fixture for fixing the dial, and the dial is pre-installed with studs. The shooting component is used to shoot a pre-welding image of the dial before the studs are welded. The control component is used to determine the target welding position of the studs according to the pre-welding image and control the movement of the slide in a horizontal plane according to the target welding position. The control component is also used to control the laser welding component to perform penetration welding on the studs at the target welding position after the slide moves; the dial fixture includes a detachably connected base and a cover plate, the base is provided with a plurality of dial seat holes, the cover plate is provided with a plurality of dial clearance holes that cooperate with the dial seat holes, the laser welding component performs penetration welding on the studs through the dial clearance holes, and the base and / or the cover plate are provided with a positioning ring for positioning the dial from the circumference of the dial.

[0006] In one possible implementation, a support column for vertically supporting the dial is provided in the middle of the dial base hole, and a positioning column for cooperating with the center hole of the dial is provided on the top of the support column; a makeshift groove for making way for the dial pins is provided on the circumference of the dial base hole, and when the pins on the dial are penetrated and welded, the pins are located at the bottom of the dial.

[0007] In another possible implementation, a display through hole is provided on the dial, and the center lines of the display through hole and the target pin closest to the display through hole are arranged to coincide with each other, and a positioning column for positioning the display through hole is provided at the edge of the mouth of the dial seat hole, and the distance between the center of the display through hole and the center of the target pin is a preset center distance; the control component determines the target welding position of the pin according to the pre-welding image by the following method: determining the display through hole contour of the display through hole and the dial give-way hole contour of the dial give-way hole in the pre-welding image; determining the position of the target pin according to the display through hole contour, the dial give-way hole contour and the preset center distance; determining the target welding positions of all the pins in the pre-welding image according to the position of the target pin and the dial give-way hole contour.

[0008] In another possible implementation, the shooting component is also used to shoot the post-welding image after the dial penetrates the welding nail, and the control component is also used to detect the welding quality of the nail. The control component detects the welding quality of the nail by the following method: determining all actual welding positions in the post-welding image, and determining the welding deviation distance between each target welding position and the actual welding position corresponding to each target welding position according to the target welding position in the pre-welding image and the actual welding position in the post-welding image; when the first welding deviation distance is greater than the preset welding deviation distance, issuing a first prompt message for inspecting the laser welding component.

[0009] In another possible implementation, the control component also detects the welding quality of the nails by the following method: determining the welding deviation line of each target welding position and the actual welding position corresponding to each target welding position; when the number of welding deviation lines whose length is greater than the preset welding deviation line length is greater than the preset first number, and the azimuth difference of at least two welding deviation lines is greater than the preset azimuth difference, a second prompt message for inspecting the drive component of the slide is issued; when the number of mutually parallel welding deviation lines is greater than the preset second number, and the length of each welding deviation line in the multiple mutually parallel welding deviation lines is greater than the preset welding deviation line length, a third prompt message for inspecting the positioning component of the slide and the dial fixture is issued.

[0010] In another possible implementation, a first vibration detection component is provided on the shooting component, and a second vibration detection component is provided on the laser welding component, and the first vibration detection component and the second vibration detection component are electrically connected to the control component, respectively; the control component detects the working state of the high-precision automatic welding equipment by the following method: obtaining the first amplitude of the first vibration detection component, and obtaining the second amplitude of the second vibration detection component; when the first amplitude or the second amplitude is greater than the preset amplitude, or when the amplitude difference between the first amplitude and the second amplitude is greater than the preset amplitude difference, a fourth prompt message is issued to prompt the drive component of the slide to inspect.

[0011] In another possible implementation, a display component is also included, which can be rotated upward to open to fix or remove the dial clamp on the slide, and the display component is used to display a pre-welding image marked with a target welding position and a post-welding image marked with an actual welding position.

[0012] An embodiment of the present application provides a high-precision automatic welding method for dial studs, using the high-precision automatic welding equipment for dial studs as described above, and the method includes: determining the display through hole contour of the display through hole and the dial give-way hole contour of the dial in the image before welding; determining the position of the target stud according to the display through hole contour, the dial give-way hole contour and the preset center distance; determining the target welding positions of all studs in the image before welding according to the position of the target stud and the dial give-way hole contour, and controlling the laser welding component to weld the target welding positions of all studs in sequence.

[0013] In another possible implementation, the method also includes: determining all actual welding positions in the image after welding, and determining the welding deviation distance between each target welding position and the actual welding position corresponding to each target welding position based on the target welding position in the image before welding and the actual welding position in the image after welding; when the first welding deviation distance is greater than the preset welding deviation distance, issuing a first prompt message for inspecting the laser welding assembly.

[0014] In another possible implementation, the method also includes: determining a welding deviation line between each target welding position and an actual welding position corresponding to each target welding position; when the number of welding deviation lines whose length is greater than a preset welding deviation line length is greater than a preset first number, and the azimuth difference between at least two welding deviation lines is greater than the preset azimuth difference, issuing a second prompt message for inspecting the drive assembly of the slide; when the number of mutually parallel welding deviation lines is greater than a preset second number, and the length of each welding deviation line in multiple mutually parallel welding deviation lines is greater than the preset welding deviation line length, issuing a third prompt message for inspecting the positioning assembly of the slide and the dial fixture.

[0015] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0016] The embodiment of the present application provides a high-precision automatic welding device for dial studs, including a slide, a shooting component, a laser welding component and a control component. The slide is provided with a dial clamp for fixing the dial, and the dial is pre-installed with studs. The shooting component is used to shoot a pre-welding image of the dial before the studs are welded. The control component is used to determine the target welding position of the stud according to the pre-welding image and control the movement of the slide in the horizontal plane according to the target welding position. The control component is also used to control the laser welding component to perform penetration welding on the stud at the target welding position after the slide moves; the dial clamp includes a detachably connected base and a cover plate, the base is provided with a plurality of dial seat holes, the cover plate is provided with a plurality of dial clearance holes that cooperate with the dial seat holes, the laser welding component performs penetration welding on the studs through the dial clearance holes, and the base and / or the cover plate are provided with a positioning ring for positioning the dial from the circumference of the dial. When in use, the high-precision automatic welding equipment for dial studs in the embodiment of the present application accurately fixes the dial through the base and cover of the dial clamp, thereby improving the fixing stability of the dial, thereby improving the accuracy and stability of the dial during stud welding, and improving the processing effect of the dial. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a high-precision automatic welding device for dial studs provided in an embodiment of the present application;

[0019] Figure 2 for Figure 1A schematic diagram of the local structure of a high-precision automatic welding device for dial nails;

[0020] Figure 3 A schematic diagram of the main structure of a high-precision automatic welding device for dial studs provided in an embodiment of the present application;

[0021] Figure 4 for Figure 3 A schematic diagram of the local structure at B of a high-precision automatic welding device for dial nails;

[0022] Figure 5 A schematic diagram of the three-dimensional structure of a dial fixture provided in an embodiment of the present application;

[0023] Figure 6 for Figure 5 A schematic diagram of the local structure of a dial fixture at position C;

[0024] Figure 7 A schematic diagram of a top view of a dial fixture provided in an embodiment of the present application;

[0025] Figure 8 for Figure 7 A schematic structural diagram of a DD section of a dial fixture;

[0026] Fig. 9 for Figure 8 A schematic diagram of the local structure at E of a dial fixture;

[0027] Fig.10 A schematic diagram of a three-dimensional structure of a dial provided in an embodiment of the present application;

[0028] Fig.11 A schematic diagram of the three-dimensional structure of another high-precision automatic welding device for dial studs provided in an embodiment of the present application;

[0029] Fig.12 A schematic diagram of a top view structure of a dial provided in an embodiment of the present application;

[0030] Fig.13 for Fig.12 A schematic diagram of a partial structure of a dial;

[0031] Fig.14 A schematic diagram of a control structure of a high-precision automatic welding device for dial studs provided in an embodiment of the present application;

[0032] Fig.15 A schematic flow chart of a high-precision automatic welding method for dial studs provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0034] It should be noted that when a component or structure is referred to as being "fixed to" or "disposed on" another component or structure, it may be directly on the other component or structure or indirectly on the other component or structure. When a component or structure is referred to as being "connected to" another component or structure, it may be directly connected to the other component or structure or indirectly connected to the other component or structure.

[0035] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or a component or structure referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] The nail suction and installation robot in the prior art cooperates with the nail clamp to realize automatic assembly, but it still cannot ensure that the nails are firmly installed on the dial, and the installation efficiency of the nails is low.

[0038] Based on the above reasons, an embodiment of the present application provides a high-precision automatic welding device for dial studs, including a slide, a shooting component, a laser welding component and a control component. The slide is provided with a dial clamp for fixing the dial, and the dial is pre-installed with studs. The shooting component is used to capture a pre-welding image of the dial before the studs are welded. The control component is used to determine the target welding position of the studs according to the pre-welding image and control the movement of the slide in the horizontal plane according to the target welding position. The control component is also used to control the laser welding component to perform penetration welding on the studs at the target welding position after the slide moves; the dial clamp includes a detachably connected base and a cover plate, the base is provided with a plurality of dial seat holes, the cover plate is provided with a plurality of dial clearance holes that cooperate with the dial seat holes, the laser welding component performs penetration welding on the studs through the dial clearance holes, and the base and / or the cover plate are provided with a positioning ring for positioning the dial from the circumference of the dial. When in use, the high-precision automatic welding equipment for dial studs in the embodiment of the present application accurately fixes the dial through the base and cover of the dial clamp, thereby improving the fixing stability of the dial, thereby improving the accuracy and stability of the dial during stud welding, and improving the processing effect of the dial.

[0039] In some scenarios, a high-precision automatic welding device for dial studs according to an embodiment of the present application can be used in the welding of dial studs, which can improve the accuracy and stability of the welding of dial studs and improve the effect of dial processing.

[0040] The following is a detailed description of a high-precision automatic welding device for dial studs provided in an embodiment of the present application with reference to specific examples.

[0041] Figure 1 A schematic diagram of the three-dimensional structure of a high-precision automatic welding device for dial studs provided in an embodiment of the present application, Figure 2 for Figure 1 A schematic diagram of the local structure of a high-precision automatic welding device for dial nails, Figure 3 This is a schematic diagram of the main structure of a high-precision automatic welding device for dial nails provided in an embodiment of the present application. Figure 4 for Figure 3 A schematic diagram of the local structure at B of a high-precision automatic welding device for dial nails, as shown in Figures 1 to 4As shown, the high-precision automatic welding equipment for dial nails includes a slide 1, a shooting component 2, a laser welding component 3 and a control component 4. The slide 1 is provided with a dial fixture 11 for fixing the dial 101, and the dial 101 is pre-installed with nails 102. The shooting component 2 is used to capture the pre-welding image of the dial 101 before the nails 102 are welded. The control component 4 is used to determine the target welding position of the nail 102 according to the pre-welding image and control the slide 1 to move in the horizontal plane according to the target welding position. The control component 4 is also used to control the laser welding component 3 to perform penetration welding on the nail 102 at the target welding position after the slide 1 moves.

[0042] like Figures 1 to 4 As shown, a dial fixture 11 for fixing the dial 101 is provided on the slide 1. The slide 1 is used to carry the dial fixture 11. The dial fixture 11 can fix multiple dials 101 at the same time, so as to facilitate welding of multiple dials 101 at the same time.

[0043] Fig.10 A schematic diagram of a three-dimensional structure of a dial provided in an embodiment of the present application, such as Fig.10 As shown, the dial 101 is pre-installed with a pin 102, and the pin 102 is used to indicate the time. Before welding the pin 102, the pin 102 can be pre-installed on the dial 101 to achieve preliminary fixation of the pin 102, and then the pin 102 can be welded to the dial 101 to achieve stable fixation of the pin 102.

[0044] like Figures 1 to 4 As shown, the photographing component 2 is used to photograph the pre-welding image of the dial 101 before the nails 102 are welded, and the pre-welding image includes the surface images of the dial 101 and the dial fixture 11 .

[0045] Fig.14 A control structure diagram of a high-precision automatic welding device for dial nails provided in an embodiment of the present application is shown in FIG. Fig.14 As shown, the control component 4 can be electrically connected to the slide 1, the shooting component 2 and the laser welding component 3 respectively, so that the control component 4 can control the working status of the slide 1 and the laser welding component 3 according to the image captured by the shooting component 2.

[0046] When welding, the control component 4 is used to determine the target welding position of the word pin 102 according to the image before welding, so as to locate the area where the word pin 102 needs to be welded, and then the slide 1 can be controlled to move in the horizontal plane according to the target welding position. The slide 1 is an electric slide to adjust the position of all dials 101 to facilitate the subsequent welding of the word pin 102 on the dial 101.

[0047] Exemplarily, the slide 1 may be configured with a driving component for driving the slide 1 to move along the x-axis and y-axis directions in a horizontal plane, respectively. The driving component can drive the slide 1 to adjust the position of the slide 1 in the horizontal plane.

[0048] During the welding of the word pins, the control component 4 is also used to control the laser welding component 3 to perform penetration welding on the word pins 102 at the target welding position after the slide 1 moves, so as to realize the automatic welding process of the word pins 102 .

[0049] Figure 5 A schematic diagram of a three-dimensional structure of a dial fixture provided in an embodiment of the present application, Figure 6 for Figure 5 A schematic diagram of the local structure of a dial fixture at position C, Figure 7 A schematic diagram of a top view of a dial fixture provided in an embodiment of the present application is shown in FIG. Figure 8 for Figure 7 A schematic diagram of the structure of the DD section of a dial fixture, Fig. 9 for Figure 8 A schematic diagram of the local structure of a dial fixture at E, as shown in Figures 5 to 9 As shown, the dial fixture 11 includes a detachably connected base 111 and a cover plate 112, the base 111 is provided with a dial seat hole 111a, the cover plate 112 is provided with a dial clearance hole 112a that cooperates with the dial seat hole 111a, the laser welding assembly 3 performs penetration welding on the word pin 102 through the dial clearance hole 112a, and the base 111 and / or the cover plate 112 are provided with a positioning ring 113 for positioning the dial 101 from the circumference of the dial 101.

[0050] like Figures 5 to 9 As shown, structurally, the base 111 is used to support the dial 101, and the base 111 is provided with a dial seat hole 111a, and the cover plate 112 is provided with a dial clearance hole 112a that cooperates with the dial seat hole 111a. The dial seat hole 111a and the dial clearance hole 112a are used to position the dial 101 in the circumferential direction.

[0051] Exemplarily, the base 111 and the cover plate 112 may be positioned and connected to each other by bolts to ensure the accuracy of the position between the base 111 and the cover plate 112 .

[0052] When welding the word pins, the laser welding assembly 3 performs penetration welding on the word pins 102 through the dial clearance holes 112 a to achieve efficient welding of the dial 101 .

[0053] like Fig. 9As shown, the cover plate 112 is provided with a positioning ring 113 for positioning the dial 101 from the circumference of the dial 101. When the dial 101 is fixed, the positioning ring 113 can position the dial 101 from the circumference to ensure the accuracy and stability of the positioning of the dial 101.

[0054] Exemplarily, the base 111 and the cover plate 112 may be respectively provided with positioning rings 113 for positioning the dial 101 from the circumference of the dial 101 , or the positioning ring 113 for positioning the dial 101 from the circumference of the dial 101 may be provided only on the base 111 .

[0055] The beneficial effect brought about by the above-mentioned implementation method is that the target welding position of the word nail can be determined according to the image before welding, and the control component can control the laser welding component to perform penetration welding on the word nail at the target welding position after the slide moves, thereby improving the welding efficiency of the dial word nail.

[0056] The beneficial effect brought about by the above implementation method is that the dial is accurately fixed by the base and the cover plate of the dial fixture, thereby improving the accuracy and stability of the dial when the studs are welded.

[0057] In some implementations, a support column 111b for vertically supporting the dial 101 is provided in the middle of the dial seat hole 111a, and a positioning column 111c for cooperating with the central hole 103 of the dial 101 is provided on the top of the support column 111b. A clearance groove 111d for making way for the word pin 102 of the dial 101 is provided on the circumference of the dial seat hole 111a. When the word pin 102 on the dial 101 is penetrated and welded, the word pin 102 is located at the bottom of the dial 101.

[0058] like Figures 5 to 9 As shown, a support column 111b for vertically supporting the dial 101 is provided in the middle of the dial base hole 111a, and the middle of the dial 101 can be supported and positioned by the support column 111b. A center hole 103 is provided in the center of the dial 101, and the center hole 103 is used to install the pointer shaft.

[0059] Structurally, a positioning column 111 c is provided on the top of the support column 111 b for cooperating with the center hole 103 of the dial 101 , so that the dial 101 can be positioned through the cooperation between the positioning column 111 c and the center hole 103 .

[0060] like Figures 5 to 9As shown, a circumferential direction of the dial seat hole 111a is provided with a giving way groove 111d for giving way to the word pin 102 of the dial 101. The number of the giving way grooves 111d is multiple and they are arranged corresponding to the word pin 102. When fixing the dial 101, the giving way groove 111d can avoid the word pin 102 and give way to the word pin 102 to avoid the collision between the word pin 102 and the dial seat hole 111a causing scratches on the word pin 102, and can also ensure the fixing accuracy of the word pin 102.

[0061] Fig.10 A schematic diagram of a three-dimensional structure of a dial provided in an embodiment of the present application, such as Fig.10 As shown, Fig.10 The dial 101 in the figure is a schematic diagram of the state of the dial 101 when being welded. When the studs 102 on the dial 101 are penetrated and welded, the studs 102 are located at the bottom of the dial 101, and the studs 102 and the dial 101 can be welded from the back of the studs 102.

[0062] The beneficial effect brought about by the above implementation method is that it can avoid the collision between the word pin and the dial seat hole to cause scratches on the word pin, and can also ensure the fixing accuracy of the word pin.

[0063] In some implementations, a display hole 104 is provided on the dial 101, and the display hole 104 and the center line of the target nail closest to the display hole 104 are arranged to coincide with each other, and a positioning column 111e for positioning the display hole 104 is provided at the edge of the mouth of the dial base hole 111a, and the distance between the center of the display hole 104 and the center of the target nail is a preset center distance.

[0064] like Figures 5 to 10 As shown, a display through hole 104 is provided on the dial 101. The display through hole 104 is a window opened on the dial 101 for displaying information such as date, and the display through hole 104 may be square.

[0065] like Figures 5 to 10 As shown, the center lines of the display through hole 104 and the target word nail closest to the display through hole 104 are arranged to coincide with each other, so that the position of the display through hole 104 can be located by the target word nail closest to the display through hole 104 .

[0066] like Fig. 9 As shown, a positioning column 111e for positioning the display through hole 104 is provided at the edge of the mouth of the dial base hole 111a. The positioning column 111e is protruded upward at the edge of the mouth of the dial base hole 111a. When the dial 101 is installed, the display through hole 104 of the dial 101 and the positioning column 111e can be matched with each other to realize the positioning of the dial 101.

[0067] like Fig. 9As shown, the distance between the center of the display through hole 104 and the center of the target word nail is the preset center distance d, and the position of the target word nail can be located by the position of the display through hole 104 and the preset center distance d.

[0068] In some implementations, the control component 4 can determine the target welding position of the nail 102 according to the pre-welding image through S110 to S130. S110 to S130 are described in detail below.

[0069] S110 , determining the display through hole contour of the display through hole 104 and the dial clearance hole contour of the dial clearance hole 112 a in the image before welding.

[0070] After the pre-welding image before the dial 101 is welded with the nail 102, the display through hole contour of the display through hole 104 and the dial clearance hole contour of the dial clearance hole 112a can be determined in the pre-welding image by image recognition.

[0071] S120, determining the position of the target word pin according to the display through hole contour, the dial clearance hole contour and the preset center distance.

[0072] After the display through hole contour and the dial clearance hole contour are obtained, since the word pins 102 are located at the bottom of the dial 101 during welding, the position of each word pin 102 needs to be determined by calculation.

[0073] When identifying the position of the word pin, the center point position of the display through hole can be determined according to the display through hole contour, and the circular contour of the dial 101 can be determined according to the dial yield hole contour, so that the position of the display through hole 104 in the circular contour of the dial 101 can be obtained. Since the distance between the center of the display through hole 104 and the center of the target word pin is the preset center distance d, the center distance d can be preset to determine the position of the target word pin, thereby realizing the determination of the welding position of the target word pin.

[0074] S130, determining the target welding positions of all the pins 102 in the image before welding according to the positions of the target pins and the contour of the dial clearance hole.

[0075] After obtaining the position of the target pin, the target welding position of all the pins 102 in the image before welding can be determined based on the position of the target pin and the contour of the dial's clearance hole. That is, if the position of one pin is known on the circular dial, the positions of the remaining pins can be determined, thereby achieving the determination of the target welding positions of all the pins 102.

[0076] For example, the target welding position of each word pin 102 may be the position where the center point of each word pin 102 is located.

[0077] The beneficial effect brought about by the above implementation method is that when the dial is installed, the display through hole and the positioning column of the dial can be installed with each other to achieve accurate positioning of the dial.

[0078] The beneficial effect brought about by the above implementation method is that it can determine the target pin position closest to the displayed through hole by displaying the through hole contour and the dial clearance hole contour, and further determine the target welding position of all pins, thereby realizing the identification of the welding position of all pins.

[0079] In some implementations, the photographing component 2 is further used to photograph a post-welding image of the dial 101 after it penetrates the welding pin 102 , and the control component 4 is further used to detect the welding quality of the pin 102 .

[0080] After all the word pins 102 are welded, the shooting component 2 can be used to shoot a post-welding image after the dial 101 penetrates the welded word pins 102. The post-welding image has a welding area where welding is completed. The control component 4 is also used to detect the welding quality of the word pins 102 to achieve a review of the welding quality of the word pins 102.

[0081] In some implementations, the control component 4 detects the welding quality of the nail 102 through S210 to S220. S210 to S220 are described in detail below.

[0082] S210, determining all actual welding positions in the image after welding, and determining the welding deviation distance between each target welding position and the actual welding position corresponding to each target welding position according to the target welding position in the image before welding and the actual welding position in the image after welding.

[0083] Fig.12 A schematic diagram of a top view of a dial provided in an embodiment of the present application is shown in FIG. Fig.13 for Fig.12 A schematic diagram of the local structure of a dial, such as Fig.12 and Fig.13 As shown, after obtaining the image after welding, all actual welding positions in the image after welding can be determined by image recognition, and then the target welding positions in the image before welding and the actual welding positions in the image after welding can be compared to determine the welding deviation distance between each target welding position and the actual welding position corresponding to each target welding position, and then the difference between the target welding position and the actual welding position corresponding to the target welding position can be calculated to determine whether the deviation of the actual welding position is too large.

[0084] For example, Fig.12 and Fig.13As shown, the target welding position 101a corresponds to the actual welding position 101b, and the position deviation between the target welding position 101a and the actual welding position 101b is the welding deviation distance p1.

[0085] Exemplarily, the actual welding position may be a circular welding spot.

[0086] S220. When the first welding deviation distance is greater than the preset welding deviation distance, a first prompt message for inspecting the laser welding assembly 3 is issued.

[0087] After the welding deviation distances corresponding to all target welding positions / actual welding positions are obtained, it can be determined whether the welding quality meets the standards based on the welding deviation distances.

[0088] When performing quality inspection on the welding deviation distance, when the first welding deviation distance among all welding deviation distances is greater than the preset welding deviation distance, it means that the deviation value of the first welding deviation distance is too large, which may be caused by insufficient welding accuracy of the laser welding component 3. At this time, the first prompt information for inspecting the laser welding component 3 can be issued.

[0089] Exemplarily, the preset welding deviation distance may be 0.2 mm, 0.5 mm or 1 mm.

[0090] The beneficial effect brought about by the above implementation method is that the welding quality can be detected according to the welding deviation distance between each target welding position and the actual welding position corresponding to each target welding position, thereby achieving effective control of the welding quality of the dial.

[0091] In some implementations, the control component 4 further detects the welding quality of the nail 102 through S310 to S320. S310 to S320 are described in detail below.

[0092] S310, determining a welding deviation connection line between each target welding position and an actual welding position corresponding to each target welding position.

[0093] In actual word pin welding, the deviation of the fixed position of the slide and the dial fixture may cause deviation in the welding position of all word pins. In order to detect the deviation of the fixed position of the slide and the dial fixture, the welding deviation connection line between each target welding position and the actual welding position corresponding to each target welding position can be determined, and then the fixed position of the slide and the dial fixture can be detected based on the welding deviation connection line between each target welding position and the actual welding position corresponding to each target welding position.

[0094] S320: When the number of welding deviation lines whose length is greater than the preset welding deviation line length is greater than the preset first number, and the azimuth difference of at least two welding deviation lines is greater than the preset azimuth difference, a second prompt message is issued to inspect the drive component of the slide 1. When the number of mutually parallel welding deviation lines is greater than the preset second number, and the length of each welding deviation line in the plurality of mutually parallel welding deviation lines is greater than the preset welding deviation line length, a third prompt message is issued to inspect the positioning components of the slide 1 and the dial fixture 11.

[0095] After obtaining the welding deviation line of each target welding position and the actual welding position corresponding to each target welding position, when the number of welding deviation lines whose length is greater than the preset welding deviation line length is greater than the preset first number, and the azimuth difference of at least two welding deviation lines is greater than the preset azimuth difference, it means that the deviation distance of the welding position of more word pins is too large, and the angles of the welding deviation lines of multiple word pins are different, indicating that the welding deviation may be caused by the inaccurate position of the drive component of the slide 1 driving the slide 1 and the dial fixture 11 to move. At this time, a second prompt message for inspecting the drive component of the slide 1 can be issued.

[0096] like Fig.12 and Fig.13 As shown, the target welding position 101c corresponds to the actual welding position 101d, and the position deviation between the target welding position 101c and the actual welding position 101d is the welding deviation distance p2, that is, the length of the welding deviation line corresponding to the target welding position 101c and the actual welding position 101d is p2, and the azimuth angle of the welding deviation line corresponding to the target welding position 101c and the actual welding position 101d is the azimuth angle α1.

[0097] like Fig.12 and Fig.13 As shown, the target welding position 101e corresponds to the actual welding position 101f, and the position deviation between the target welding position 101e and the actual welding position 101f is the welding deviation distance p3, that is, the length of the welding deviation line corresponding to the target welding position 101e and the actual welding position 101f is p3, and the azimuth angle of the welding deviation line corresponding to the target welding position 101e and the actual welding position 101f is the azimuth angle α2.

[0098] During detection, it can be determined whether the number of welding deviation lines whose length is greater than the preset welding deviation line length is greater than the preset first number, and whether there are at least two welding deviation lines whose azimuth angle difference is greater than the preset azimuth angle difference, that is, it can be determined whether the difference between the azimuth angle α1 and the azimuth angle α2 is greater than the preset azimuth angle difference.

[0099] Exemplarily, the preset azimuth angle difference may be 10°, 30° or 50°.

[0100] Exemplarily, the preset first number may be 2, 4 or 6.

[0101] After obtaining the welding deviation lines of each target welding position and the actual welding position corresponding to each target welding position, when the number of parallel welding deviation lines is greater than the preset second number, and the length of each of the multiple parallel welding deviation lines is greater than the preset welding deviation line length, it indicates that the positioning error of the slide 1 and the dial fixture 11 may cause more welding deviation lines to be parallel to each other, that is, the actual welding positions corresponding to the multiple target welding positions are all tilted in one direction, and the welding deviations have reached the preset welding deviation line length. At this time, a third prompt message can be issued to inspect the positioning components of the slide 1 and the dial fixture 11.

[0102] Exemplarily, the preset second number may be 2, 5 or 10.

[0103] For example, when determining mutually parallel welding deviation lines, when the azimuth angle difference between the two welding deviation lines is less than 2°, it can be determined that the two welding deviation lines are mutually parallel.

[0104] The beneficial effect brought about by the above implementation method is that the welding accuracy of the word nail can be detected according to the welding deviation connection line between the target welding position of each word nail and the actual welding position corresponding to each target welding position, thereby improving the accuracy of welding quality detection during the word nail welding process.

[0105] The beneficial effect brought about by the above-mentioned implementation method is that when the number of welding deviation lines whose length is greater than the preset welding deviation line length is greater than the preset first number, and the azimuth difference between at least two welding deviation lines is greater than the preset azimuth difference, the drive component of the slide is inspected and repaired, and the welding error caused by the failure of the drive component of the slide can be detected.

[0106] The beneficial effect brought about by the above-mentioned implementation method is that when the number of mutually parallel welding deviation lines is greater than the preset second number, and the length of each welding deviation line in the multiple mutually parallel welding deviation lines is greater than the preset welding deviation line length, the positioning components of the slide and the dial fixture are inspected and repaired, and the welding errors caused by the failure of the positioning components of the slide and the dial fixture can be detected.

[0107] In some implementations, a first vibration detection component 21 is provided on the photographing component 2, and a second vibration detection component 31 is provided on the laser welding component 3. The first vibration detection component 21 and the second vibration detection component 31 are electrically connected to the control component 4, respectively.

[0108] Structurally, the shooting component 2 is provided with a first vibration detection component 21, which is used to detect the vibration state of the shooting component 2. The laser welding component 3 is provided with a second vibration detection component 31, which is used to detect the vibration state of the laser welding component 3. The first vibration detection component 21 and the second vibration detection component 31 are electrically connected to the control component 4 respectively, so that the control component 4 can monitor the vibration of the machine according to the detection results of the first vibration detection component 21 and the second vibration detection component 31 to ensure the welding accuracy of the nails.

[0109] In some implementations, the control component 4 can detect the working status of the high-precision automatic welding equipment through S410 to S420, and S410 to S420 are described in detail below.

[0110] S410 , obtaining a first amplitude of the first vibration detection component 21 , and obtaining a second amplitude of the second vibration detection component 31 .

[0111] During operation, the first amplitude of the first vibration detection component 21 and the second amplitude of the second vibration detection component 31 can be obtained, and the accuracy of the nail welding can be determined based on the first amplitude and the second amplitude, so as to avoid excessive vibration amplitude when taking the dial image when determining the nail position, and also avoid welding errors caused by laser welding of nails.

[0112] S420: When the first amplitude or the second amplitude is greater than the preset amplitude, or when the amplitude difference between the first amplitude and the second amplitude is greater than the preset amplitude difference, a fourth prompt message is issued to prompt the drive component of the slide 1 to be repaired.

[0113] During operation, when the first amplitude or the second amplitude is greater than the preset amplitude, it means that the movement of the driving component of the slide 1 causes the vibration amplitude of the shooting component or the laser welding component to be too large, and a fourth prompt message can be issued to prompt the driving component of the slide 1 to be inspected.

[0114] During operation, when the amplitude difference between the first amplitude and the second amplitude is greater than the preset amplitude difference, it means that the movement of the driving component of the slide 1 causes the vibration amplitude difference of the shooting component and the laser welding component to be too large, and a fourth prompt message can also be issued to prompt the driving component of the slide 1 to be inspected.

[0115] The beneficial effect brought about by the above-mentioned implementation method is that the working state of the driving component of the slide can be judged according to the absolute value of the first amplitude or the second amplitude, or according to the amplitude difference between the first amplitude and the second amplitude, so as to avoid excessive shooting errors or laser welding errors caused by vibration, thereby improving the shooting accuracy or laser welding accuracy.

[0116] In some implementations, the device also includes a display component 5, which can be rotated upward to open to fix or remove the dial clamp 11 on the slide 1, and the display component 5 is used to display a pre-welding image marked with a target welding position and a post-welding image marked with an actual welding position.

[0117] Fig.11 A schematic diagram of the three-dimensional structure of another high-precision automatic welding device for dial nails provided in an embodiment of the present application, such as Fig.11 As shown, the device also includes a display component 5, which is rotatably connected to the device. The display component 5 can be rotated upward to open to fix or remove the dial clamp 11 on the slide 1. After the dial clamp 11 is fixed or removed on the slide 1, the display component 5 can be rotated downward to display the image.

[0118] When working, the display component 5 is used to display a pre-welding image marked with a target welding position and a post-welding image marked with an actual welding position, so that the user can visually check the welding process and the welding result.

[0119] The beneficial effect brought about by the above implementation method is that the display assembly can be rotated open to fix or remove the dial clamp on the slide, thereby achieving the installation and fixation of the dial clamp.

[0120] The beneficial effect brought about by the above-mentioned implementation method is that the display component can enclose the shooting component and the laser welding component, thereby improving the safety and stability of the welding process.

[0121] The embodiment of the present application also provides a high-precision automatic welding method for dial nails, using the high-precision automatic welding device for dial nails as described in any of the above items. Fig.15 A schematic diagram of a high-precision automatic welding method for dial nails provided in an embodiment of the present application, such as Fig.15 As shown, the method includes: S110, determining the display through hole contour of the display through hole 104 and the dial clearance hole contour of the dial clearance hole 112a in the image before welding. S120, determining the position of the target word pin according to the display through hole contour, the dial clearance hole contour and the preset center distance. S130, determining the target welding position of all word pins 102 in the image before welding according to the position of the target word pin and the dial clearance hole contour, and controlling the laser welding assembly 3 to weld the target welding positions of all word pins 102 in sequence.

[0122] The beneficial effect brought about by the embodiments of the present application is that when installing the dial, the display through hole and the positioning column of the dial can be installed relative to each other to achieve precise positioning of the dial; the target pin position closest to the display through hole can be determined by the display through hole contour and the dial give-way hole contour, and the target welding position of all the pins can be further determined, thereby realizing the identification of the welding positions of all the pins and ensuring the welding accuracy of the pins.

[0123] In some implementations, the above method further includes the above S210 to S220: S210, determining all actual welding positions in the image after welding, and determining the welding deviation distance between each target welding position and the actual welding position corresponding to each target welding position according to the target welding position in the image before welding and the actual welding position in the image after welding. S220, when the first welding deviation distance is greater than the preset welding deviation distance, issuing a first prompt message for inspecting the laser welding assembly 3. The beneficial effects brought about by the embodiment of the present application have been described in the above method and will not be repeated here.

[0124] In some implementations, the above method also includes the above S310 to S320: S310, determining the welding deviation line of each target welding position and the actual welding position corresponding to each target welding position. S320, when the number of welding deviation lines whose length is greater than the preset welding deviation line length is greater than the preset first number, and the azimuth difference of at least two welding deviation lines is greater than the preset azimuth difference, a second prompt message for inspecting the drive component of the slide 1 is issued. When the number of mutually parallel welding deviation lines is greater than the preset second number, and the length of each welding deviation line in the multiple mutually parallel welding deviation lines is greater than the preset welding deviation line length, a third prompt message for inspecting the positioning component of the slide 1 and the dial fixture 11 is issued. The beneficial effects brought about by the embodiments of the present application have been described in the above method and will not be repeated here.

[0125] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A high-precision automatic welding equipment for dial nails, characterized in that: The invention comprises a slide table (1), a photographing component (2), a laser welding component (3) and a control component (4); the slide table (1) is provided with a dial fixture (11) for fixing a dial (101); a nail (102) is pre-installed on the dial (101); the photographing component (2) is used to photograph a pre-welding image of the dial (101) before the nail (102) is welded; the control component (4) is used to determine a target welding position of the nail (102) according to the pre-welding image and control the slide table (1) to move in a horizontal plane according to the target welding position; the control component (4) is also used to control the laser welding component (3) to perform penetration welding on the nail (102) at the target welding position after the slide table (1) moves; The dial fixture (11) comprises a detachably connected base (111) and a cover plate (112); the base (111) is provided with a plurality of dial seat holes (111a); the cover plate (112) is provided with a plurality of dial clearance holes (112a) that cooperate with the dial seat holes (111a); the laser welding assembly (3) performs penetration welding on the studs (102) through the dial clearance holes (112a); and the base (111) and / or the cover plate (112) are provided with a positioning ring (113) for positioning the dial (101) from the circumference of the dial (101); A support column (111b) for vertically supporting the dial (101) is provided in the middle of the dial seat hole (111a), and a positioning column (111c) for cooperating with the central hole (103) of the dial (101) is provided at the top of the support column (111b); a clearance groove (111d) for making way for the word pin (102) of the dial (101) is provided on the circumference of the dial seat hole (111a), and when the word pin (102) on the dial (101) is penetrated and welded, the word pin (102) is located at the bottom of the dial (101); A display through hole (104) is provided on the dial (101), the display through hole (104) and the center line of the target word nail closest to the display through hole (104) are arranged to coincide with each other, a positioning column (111e) for positioning the display through hole (104) is provided at the edge of the mouth of the dial seat hole (111a), and the distance between the center of the display through hole (104) and the center of the target word nail is a preset center distance; The control component (4) determines the target welding position of the nail (102) according to the pre-welding image by the following method: Determining a display through hole outline of the display through hole (104) and a dial clearance hole outline of the dial clearance hole (112a) in the pre-welding image; Determine the position of the target word pin according to the display through hole outline, the dial clearance hole outline and the preset center distance; Determine the target welding positions of all the pins (102) in the image before welding according to the positions of the target pins and the outline of the dial clearance hole; The photographing component (2) is also used to photograph a post-welding image of the dial (101) after it penetrates the welding stud (102). The control component (4) is also used to detect the welding quality of the stud (102). The control component (4) detects the welding quality of the stud (102) by the following method: Determine all actual welding positions in the image after welding, and determine the welding deviation distance between each target welding position and the actual welding position corresponding to each target welding position according to the target welding position in the image before welding and the actual welding position in the image after welding; When the welding deviation distance is greater than a preset welding deviation distance, a first prompt message for inspecting the laser welding assembly (3) is issued; The control component (4) also detects the welding quality of the nail (102) by the following method: Determine a welding deviation connection line between each target welding position and an actual welding position corresponding to each target welding position; When the number of welding deviation lines whose length is greater than a preset welding deviation line length is greater than a preset first number, and the azimuth difference of at least two welding deviation lines is greater than the preset azimuth difference, a second prompt message is issued to inspect the drive component of the slide (1); when the number of mutually parallel welding deviation lines is greater than a preset second number, and the length of each welding deviation line in the plurality of mutually parallel welding deviation lines is greater than the preset welding deviation line length, a third prompt message is issued to inspect the positioning components of the slide (1) and the dial fixture (11).

2. The device according to claim 1, characterized in that A first vibration detection component (21) is provided on the shooting component (2), a second vibration detection component (31) is provided on the laser welding component (3), and the first vibration detection component (21) and the second vibration detection component (31) are electrically connected to the control component (4) respectively; The control component (4) detects the working status of the high-precision automatic welding equipment by the following method: Acquiring a first amplitude of the first vibration detection component (21), and acquiring a second amplitude of the second vibration detection component (31); When the first amplitude or the second amplitude is greater than a preset amplitude, or when the amplitude difference between the first amplitude and the second amplitude is greater than a preset amplitude difference, a fourth prompt message is issued to prompt that the drive component of the slide table (1) be repaired.

3. The device according to claim 2, characterized in that It also includes a display component (5), which can be rotated upward to open so as to fix or remove the dial fixture (11) on the slide table (1), and the display component (5) is used to display a pre-welding image marked with a target welding position and a post-welding image marked with an actual welding position.

4. A high-precision automatic welding method for dial studs, characterized in that: Using the high-precision automatic welding equipment for dial studs according to any one of claims 1 to 3, the method comprises: Determining a display through hole outline of the display through hole (104) and a dial clearance hole outline of the dial clearance hole (112a) in the pre-welding image; Determine the position of the target word pin according to the display through hole outline, the dial clearance hole outline and the preset center distance; The target welding positions of all the word pins (102) in the image before welding are determined according to the positions of the target word pins and the outline of the dial clearance hole, and the laser welding component (3) is controlled to weld the target welding positions of all the word pins (102) in sequence.

5. The method according to claim 4, characterized in that The method further comprises: Determine all actual welding positions in the image after welding, and determine the welding deviation distance between each target welding position and the actual welding position corresponding to each target welding position according to the target welding position in the image before welding and the actual welding position in the image after welding; When the first welding deviation distance is greater than the preset welding deviation distance, a first prompt message for inspecting the laser welding assembly (3) is issued.

6. The method according to claim 5, characterized in that The method further comprises: Determine a welding deviation connection line between each target welding position and an actual welding position corresponding to each target welding position; When the number of welding deviation lines whose length is greater than a preset welding deviation line length is greater than a preset first number, and the azimuth difference of at least two welding deviation lines is greater than the preset azimuth difference, a second prompt message is issued to inspect the drive component of the slide (1); when the number of mutually parallel welding deviation lines is greater than a preset second number, and the length of each welding deviation line in the plurality of mutually parallel welding deviation lines is greater than the preset welding deviation line length, a third prompt message is issued to inspect the positioning components of the slide (1) and the dial fixture (11).

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