A laser welding machine

Abstract

This invention relates to a laser welding machine, belonging to the technical field of welding equipment. It includes a welding positioning module and a laser welding head positioned above it. The welding positioning module is used to position and bond the roll film material and the micro-resin components, and the laser welding head is used to weld the bonded and positioned roll film material and micro-resin components together. The welding positioning module includes: a motor drive assembly one and an upper positioning assembly driven by it; a motor drive assembly four and a lower positioning assembly driven by it; a motor drive assembly two and a pressing assembly driven by it; and a motor drive assembly three and a top-feeding assembly driven by it. This invention uses four sets of motor drive assemblies working in coordination with an upper pressing plate, a lower pressing plate, an upper pressing block, a slider one, and a slider two to complete the upper and lower pressing action of the roll film material and the micro-resin components. It simultaneously completes the positioning, pressing, and welding operations at one station, improving space utilization and flexibly adapting to production line needs.

Description

Technical Field

[0001] This invention relates to a laser welding machine, belonging to the technical field of welding equipment. Background Technology

[0002] With the continuous development of technology, the demand for connecting tiny resin components with roll film and tape is becoming increasingly urgent. These materials have the characteristics of "poor heat resistance, easy deformation, and high requirements for interface adhesion". Traditional welding technology is difficult to meet the current needs. Laser welding, with its transmission welding principle and precise energy control, has become the optimal solution for this scenario.

[0003] Current laser welding methods typically involve pressing and positioning the product before conveying it to the welding station for welding. Since the installation and use of the laser head requires a large amount of space above, it is difficult to meet welding requirements if the horizontal space of the equipment is insufficient to configure multi-station welding.

[0004] In addition, traditional laser welding requires multiple workstations, which can easily lead to errors in product positioning, resulting in defective products and affecting product quality. Summary of the Invention

[0005] To address the limitations of lower pressing action and insufficient pressing positioning accuracy caused by the excessive upper space occupation in existing welding machines, this invention proposes a laser welding machine. This machine utilizes a multi-motor assembly located below the laser head to perform positioning, pressing, and welding operations on products at a single station. This not only addresses the issue of insufficient horizontal space in the equipment but also reduces errors caused by multi-station operations.

[0006] The technical solution adopted in this invention is as follows: A laser welding machine includes a welding positioning module and a laser welding head. The welding positioning module is used to position and bond roll film and micro resin components. The laser welding head is disposed above the welding positioning module and is used to weld the bonded and positioned roll film and micro resin components together. The machine is characterized in that the welding positioning module includes components disposed on a base. Motor drive assembly 1 and upper positioning assembly driven and controlled by it; Motor drive assembly four and the lower positioning assembly driven and controlled by it; Motor drive assembly two and the film pressing assembly driven and controlled by it; and, Motor drive assembly three and the top material assembly driven and controlled by it; The upper positioning component is used to position the point-to-point conveyor plate and the roll film material, including an upper pressing plate and a positioning pin and a positioning needle disposed at its bottom; The lower positioning component is used to position the point-conveying plate downwards, and includes a lower clamping plate and a positioning pin two disposed on its end face; The film pressing assembly uses the following rolled film strip, including an upper pressing block, a slider one slidably fitted inside the upper pressing block, and a slider two slidably fitted inside the slider one. A light-transmitting plate is installed at the bottom of the slider two, and a spring is pressed onto the upper end of the slider two and elastically connected to a spring baffle via the spring. The spring baffle is simultaneously fixed to the upper end face of the slider one and the upper pressing block. The top material assembly is used to push the component to fit with the roll film material. It includes a lower pressure plate and a pin guide block disposed below it and movable relative to it. The pin guide block and the lower pressure plate are spaced apart and have corresponding pin holes. The pins pass through the pin holes of both the pin guide block and the lower pressure plate.

[0007] Furthermore, the base of the welding positioning module is assembled from a base plate and a vertical plate. The vertical plate is installed in the middle of the base plate to separate and install and support the motor drive components on both sides. Motor drive component one, motor drive component two, and motor drive component three are installed on one side of the vertical plate, and motor drive component four is installed on the other side of the vertical plate.

[0008] Furthermore, the motor drive assembly is used to drive and control the upper pressing plate to move up and down. It includes a motor, which transmits torque to a connecting block via a coupling and a belt drive mechanism. The connecting block is connected to the lower end of the transmission rod via an eccentric block installed at the front end. The upper end of the transmission rod is connected to an intermediate connecting plate. The intermediate connecting plate is fixed to the upper pressing plate via guide shafts on both sides.

[0009] Furthermore, the motor drive assembly four is used to drive and control the up-and-down movement of the lower pressing plate. It includes a motor four, which transmits torque to a ball screw via a coupling four and a belt drive mechanism four. The ball screw then drives a slider fixing plate to move up and down via a slider. The slider fixing plate is fixed to the upright plate of the base via a linear guide rail. The upper part of the slider fixing plate is connected to an intermediate connecting plate four via a cam follower. The intermediate connecting plate four is fixed to the upper lower pressing plate via guide shafts four on both sides.

[0010] Furthermore, the motor drive assembly 2 is used to drive and control the upper pressing block and its internal slider 1. The slider 2 moves up and down, including the motor 2. The motor 2 transmits torque to the connecting block 2 via the coupling 2 and the belt drive mechanism 2. The connecting block 2 is connected to the lower end of the transmission rod 2 via the eccentric block 2 installed at the front end. The upper end of the transmission rod 2 is connected to the intermediate connecting plate 2. The intermediate connecting plate 2 is fixed to the upper pressing block via the guide shafts 2 on both sides.

[0011] Furthermore, the motor drive assembly three is used to drive and control the ejector pin guide block to move upward, and push the ejector pin in the lower clamping plate upward to lift the resin component to fit with the roll film material. The motor three transmits torque to the connecting block three via a coupling three and a belt drive mechanism three. The connecting block three is connected to the ejector pin spring pressure plate via an eccentric assembly. The eccentric assembly includes an eccentric block fixing seat fixed on the intermediate connecting plate three, and an eccentric block three rotatably mounted on the eccentric block fixing seat. One end of the eccentric block three is connected to the connecting block three via a bearing, and the other end of the eccentric block three abuts against the upper ejector pin spring pressure plate via a bearing. The ejector pin spring pressure plate is installed at the bottom of the ejector pin guide block and applies an upward elastic thrust to the ejector pin spring inside the ejector pin guide block. Guide shafts three are installed on both sides of the intermediate connecting plate three, and the guide shafts three are slidably connected to the ejector pin guide block via linear bearings.

[0012] Furthermore, the positioning pin is disposed in the pin hole of the positioning pin holder formed at the bottom of the upper pressing plate, and a positioning pin baffle fixed to the upper pressing plate is disposed above the positioning pin holder. The positioning pin baffle is used to block and limit the positioning pin when the upper pressing plate is pressed down.

[0013] Furthermore, in order to improve support stability, the intermediate connecting plate one of the motor drive assembly one and the intermediate connecting plate two of the motor drive assembly two are both connected to the lower clamping plate through a slider guide rail assembly.

[0014] Furthermore, an origin plate is installed on the intermediate connecting plate to cooperate with the photoelectric sensor installed on the side to detect the position and orientation of the upper positioning component.

[0015] Furthermore, an origin plate is installed on the intermediate connecting plate 2 to cooperate with the photoelectric sensor 2 installed on the side to detect the position of the upper clamping block.

[0016] Furthermore, the ejector pin guide block has a stepped through hole extending vertically. The lower section of the stepped through hole is used to press and install the ejector pin spring, and the upper section of the stepped through hole is used to accommodate the ejector pin. An ejector pin spring pressure plate is fixed at the bottom of the ejector pin guide block. The ejector pin spring pressure plate is used to store force on the ejector pin spring inside the ejector pin guide block, so that it pushes the ejector pin upward. The lower pressing plate is disposed above the ejector pin guide block and has a stepped through hole for accommodating the ejector pin. The lower section of the stepped through hole is adapted to the ejector pin rod, and the upper section of the stepped through hole is adapted to the ejector pin head.

[0017] The laser welding machine of the present invention is particularly suitable for production line scenarios where the upper space is occupied and the lower space is limited and cannot be used to add units laterally. Its layout makes full use of the lower space and adopts four sets of motor drive components to work together with the upper pressure plate, lower pressure plate, upper pressure block, slider one, and slider two to complete the upper and lower pressing action of the roll film material and the small resin parts. The positioning pressing and welding operations are completed at one station, which improves the space utilization rate and can be flexibly adapted to the needs of the production line. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments of the present invention will be briefly described below: Figure 1 This is a schematic diagram of the laser welding machine structure in Example 1; Figure 2 This is a structural schematic diagram of the welding positioning module in Embodiment 1; Figure 3 This is a structural diagram of the base; Figure 4 This is a schematic diagram showing the position of the motor drive assembly four on the base; Figure 5 This is a schematic diagram of the first angle structure of the upper positioning component; Figure 6 This is a schematic diagram of the second angle structure of the upper positioning component; Figure 7 This is a structural schematic diagram of motor drive component one; Figure 8 This is a structural schematic diagram of motor drive component four; Figure 9 This is another structural diagram of the motor drive component four; Figure 10 This is a schematic diagram of the membrane pressing assembly structure; Figure 11 This is a schematic diagram of the assembly structure of slider one and slider two; Figure 12 This is a schematic diagram of the structure of motor drive component two; Figure 13 This is a schematic diagram of the top material assembly structure; Figure 14 This is a schematic diagram of the top material assembly from another angle; Figure 15 This is a schematic diagram of the three-dimensional structure of the motor drive assembly; In the diagram, 1. Welding positioning module; 2. Laser welding head; 100. Base; 101. Base plate; 102. Vertical plate; 200. Motor drive assembly 1; 201. Motor 1; 202. Coupling 1; 203. Belt drive mechanism 1; 204. Connecting block 1; 205. Eccentric block 1; 206. Transmission rod 1; 207. Intermediate connecting plate 1; 208. Motor 1 fixing seat; 209. Guide shaft 1; 210. Slider connecting plate 1; 211. Origin plate 1; 212. Photoelectric sensor 1; 213. Self-lubricating bearing 1; 300. Motor drive assembly 2; 301. Motor 2; 302. Coupling 2; 303. Belt drive mechanism 2; 304. Connecting block 2; 305. Eccentric block 2; 306. Transmission rod 2; 307. Intermediate connecting plate 2; 308. Motor 2 fixing seat; 309. Guide shaft 2; 310. Slider connecting plate 2; 311. Origin plate 2; 312. Self-lubricating bearing 2; 313. Photoelectric sensor 2; 400. Motor drive assembly 3; 401. Motor 3; 402. Coupling III; 403. Belt Drive Mechanism III; 404. Connecting Block III; 405. Eccentric Block III; 406. Eccentric Block Fixing Seat; 407. Intermediate Connecting Plate III; 408. Motor III Fixing Seat; 409. Guide Shaft III; 500. Motor Drive Assembly IV; 501. Motor IV; 502. Coupling IV; 503. Belt Drive Mechanism IV; 504. Ball Screw; 505. Screw Slider; 506. Slider Fixing Plate; 507. Intermediate Connecting Plate IV; 508. Guide Shaft IV; 50 9. Motor four-fixed base; 510. Cam follower; 600. Upper clamping plate; 601. Positioning pin one; 602. Positioning pin; 603. Positioning pin retainer; 604. Positioning pin baffle; 700. Lower clamping plate; 701. Positioning pin two; 800. Upper clamping block; 801. Slider one; 802. Slider two; 803. Spring baffle; 804. Light-transmitting plate; 805. Small baffle; 900. Ejector pin guide block; 901. Ejector pin spring; 902. Ejector pin; 903. Ejector pin spring pressure plate. Detailed Implementation

[0019] The invention will now be described in detail with reference to the accompanying drawings.

[0020] Example 1 This embodiment relates to a laser welding machine, such as... Figure 1 As shown, it includes two main functional parts: a welding positioning module 1 and a laser welding head 2. The welding positioning module 1 is used to position and bond the roll film material and the micro resin components. The laser welding head 2 is positioned above the welding positioning module 1 and is used to weld the bonded and positioned roll film material and micro resin components together.

[0021] This embodiment of a laser welding machine operates on roll film and micro-resin components. Its purpose is to weld the micro-resin components, mounted on a point-conveying conveyor plate, onto the roll film. In the operation, the roll film is conveyed along the X-axis via a reel; the micro-resin components are mounted on the point-conveying conveyor plate and precisely moved along the Y-axis. When the point-conveying conveyor plate reaches the welding station, the laser welding head 2 is activated to complete the welding operation.

[0022] The welding positioning module 1 is as follows Figure 2 As shown, the system includes a base 100, a motor drive assembly mounted on the base 100, an upper positioning assembly, a lower positioning assembly, a film pressing assembly, and a top-feeding assembly. The motor drive assembly comprises four sets: motor drive assembly one 200, motor drive assembly two 300, motor drive assembly three 400, and motor drive assembly four 500. Motor drive assembly one 200 drives and controls the upper positioning assembly to complete the upper positioning of the point-to-point conveyor plate and the film roll; motor drive assembly four 500 drives and controls the lower positioning assembly to complete the lower positioning of the point-to-point conveyor plate; motor drive assembly two 300 controls the film pressing assembly to complete the downward pressing of the film roll; and motor drive assembly three 400 controls the top-feeding assembly to complete the upward lifting of the micro-resin components.

[0023] The base 100 is assembled from a base plate 101 and a vertical plate 102, such as Figure 3 As shown, the upright plate 102 is installed in the middle of the base plate 101 to serve as a partition to facilitate the installation and support of the motor drive assemblies on both sides. The arrangement of the four sets of motor drive assemblies on the base 100 is as follows. Figure 2 , 4 As shown, motor drive assembly 1 200, motor drive assembly 2 300, and motor drive assembly 3 400 are installed on one side of the upright plate 102, and motor drive assembly 4 500 is installed on the other side of the upright plate 102. This installation method on both sides of the upright plate 102 further improves space utilization, meeting the requirements for the four sets of motor drive assemblies to perform vertical pressing actions within a limited space.

[0024] The upper positioning component, such as Figure 5 , 6As shown, it includes an upper pressing plate 600, and positioning pins 601 and positioning needles 602 arranged at the bottom of the upper pressing plate 600 for positioning the push-to-point conveyor plate and for positioning the roll film material strip. There are two positioning pins 601, which are respectively installed in the positioning pin holes at the bottom of the upper pressing plate 600. There are multiple positioning needles 602 arranged in the needle holes of the positioning needle holder 603 formed at the bottom of the upper pressing plate 600. A positioning needle baffle 604 fixed to the upper pressing plate 600 is arranged above the positioning needle holder 603. The positioning needle baffle 604 is used to block and limit the positioning needles 602 when the upper pressing plate 600 is pressed down.

[0025] The motor drive assembly 200 is used to drive and control the upper pressing plate 600 to move up and down, and its structure is as follows: Figure 7 As shown, the assembly includes a motor 201, a coupling 202, a belt drive mechanism 203, a connecting block 204, an eccentric block 205, a transmission rod 206, and an intermediate connecting plate 207. The motor 201 is mounted on a motor mounting base 208. The motor 201 transmits its output torque to the synchronous pulley 1 of the belt drive mechanism 203 via the coupling 202. The synchronous pulley 1 transmits power to the synchronous pulley 2 via a belt. The output shaft end of the synchronous pulley 2 is fitted with a connecting block 204 that rotates synchronously with it. An eccentric block 205 is fixed to the front end of the connecting block 204, and the eccentric block 205 has a slotted hole through which it connects to the connecting block 204. Adjusting the eccentric position through this slotted hole allows for adjustment of the vertical movement distance of the upper pressure plate 600. The upper and lower ends of the transmission rod 206 are connected to the eccentric block 205 and the intermediate connecting plate 207 respectively via self-lubricating bearings 213. The intermediate connecting plate 207 is fixed to the upper positioning assembly via a pair of guide shafts 209. Therefore, when the intermediate connecting plate 207 moves up and down, it will simultaneously drive the upper pressing plate 600 to move up and down.

[0026] To improve support stability, a slider guide rail assembly is provided between the intermediate connecting plate 207 and the lower pressing plate 700 of the motor drive assembly 200 to assist the intermediate connecting plate 207 in moving up and down. The slider is fixed to the intermediate connecting plate 207 via a slider connecting plate 210, and the guide rail is mounted on a guide rail upright plate fixed below the lower pressing plate 700. At the same time, two guide shafts 209 slide through the guide bushings of the lower pressing plate 700 and are finally fixed to the upper pressing plate 600.

[0027] The intermediate connecting plate 207 is equipped with an origin plate 211, which is used to cooperate with the side-mounted photoelectric sensor 212 to detect the position and orientation of the upper positioning component.

[0028] The operation process of the motor drive assembly 200 is as follows: Motor 201 provides power, which is transmitted to connecting block 204 via coupling 202 and belt drive mechanism 203. Eccentric block 205 mounted on connecting block 204 converts the rotational power of motor 201 into the reciprocating driving force of transmission rod 206, which is then transmitted to upper pressure plate 600 via intermediate connecting plate 207, causing upper pressure plate 600 to reciprocate up and down. When upper pressure plate 600 moves downward, it drives the positioning pin 601 and positioning needle 602 at its bottom to press down synchronously. Positioning pin 601 is inserted downward into the pin hole of the pressing conveyor plate to achieve upper positioning of the pressing conveyor plate, while positioning needle 602 is inserted downward into the needle hole of the film roll to achieve positioning of the film roll.

[0029] The lower positioning assembly includes a lower pressing plate 700 located below the upper pressing plate 600, and a pair of positioning pins 701 disposed on the upper end face of the lower pressing plate 700, such as... Figure 8 and Figure 9 As shown, the second positioning pin 701 is mirror-mounted with the first positioning pin 601 configured at the bottom of the upper clamping plate 600, and is used to position the point conveying plate downwards.

[0030] The motor drive assembly 500 is used to control the up-and-down movement of the lower pressing plate 700 to complete the downward positioning of the pressing conveyor plate; its structure is as follows. Figure 8 , 9 As shown, the assembly includes a motor 501, a coupling 502, a belt drive mechanism 503, a ball screw 504, a screw slider 505, a slider fixing plate 506, an intermediate connecting plate 507, and a guide shaft 508. The motor 501 is fixed to the upright plate 102 of the base 100 via a motor mounting base 509, located opposite the motor drive assembly 200. The motor 501 transmits its output torque to the belt drive mechanism 503 via the coupling 502. The belt drive mechanism 503 then transmits the power from the motor 501 to the ball screw 504, which in turn drives the slider fixing plate 506 to move up and down via the screw slider 505. The slider fixing plate 506 is slidably mounted on the upright plate 102 of the base 100 via a linear guide rail. The upper part of the slider fixing plate 506 is connected to the upper intermediate connecting plate 507 via a cam follower 510. The cam follower 510 is used to ensure the smooth movement of the intermediate connecting plate 507. Guide shafts 508 are installed on both sides of the intermediate connecting plate 507. The guide shafts 508 are fixed to the upper lower pressing plate 700. Therefore, when the intermediate connecting plate 507 moves up and down, it will simultaneously drive the lower pressing plate 700 to move up and down.

[0031] The operation process of the motor drive assembly 4500 is as follows: Motor 4 501 transmits power to ball screw 504 via coupling 4 502 and belt drive mechanism 4 503. Ball screw 504 converts the rotational power of motor 4 501 into the reciprocating linear motion of screw slider 505. This force is then transmitted to the upper intermediate connecting plate 4 507 via slider fixing plate 506 and cam follower 510. Finally, the guide shaft 4 508 of intermediate connecting plate 4 507 drives the lower pressing plate 700 to reciprocate up and down. When the lower pressing plate 700 moves upward, its upper positioning pin 2 701 inserts into the pin hole of the pressing conveyor plate and positions it downward.

[0032] The pressure film assembly is as follows Figure 10 , 11 As shown, the device includes an upper clamping block 800, a first slider 801, and a second slider 802. The upper clamping block 800 is slidably fitted within a square groove in the middle of an upper clamping plate 600. The upper clamping block 800 has a hollow square hole for slidably connecting the first slider 801. The second slider 802 is slidably sleeved inside the first slider 801. A spring baffle 803 is fixedly connected to the upper end of the first slider 801. A spring is press-fitted onto the upper end face of the second slider 802 through several spring holes, and elastically connected to the upper spring baffle 803 via the spring. The spring baffle 803 is fixed to the upper clamping block 800. A light-transmitting plate 804 is installed on the lower end face of the second slider 802. The light-transmitting plate 804 is fixed through a threaded hole on the side of the second slider 802. To prevent the light-transmitting plate 804 from breaking, a small baffle 805 is added to the side of the second slider 802.

[0033] The second motor drive assembly 300 is used to control the up-and-down movement of the upper pressing block 800, and drives the internal slider 801, slider 802, and light-transmitting plate 804 to press the film strip and resin components together; its structure is similar to that of the first motor drive assembly 200, such as... Figure 12 As shown, the system includes a second motor 301, a second coupling 302, a second belt drive mechanism 303, a second connecting block 304, a second eccentric block 305, a second transmission rod 306, and a second intermediate connecting plate 307. The second motor 301 is mounted on a second motor mounting base 308. The second motor 301 transmits power to the second connecting block 304 via the second coupling 302 and the second belt drive mechanism 303. The front end of the second connecting block 304 is fixed with the second eccentric block 305, which has a slotted hole and connects to the second connecting block 304 through this hole. The upper and lower ends of the second transmission rod 306 are connected to the second eccentric block 305 and the second intermediate connecting plate 307 respectively via self-lubricating bearings 312. The second intermediate connecting plate 307 is fixed to the upper pressing block 800 above via a pair of guide shafts 309. Therefore, when the second intermediate connecting plate 307 moves up and down, it simultaneously drives the upper pressing block 800 to move up and down.

[0034] To improve support stability, a slider guide rail assembly is provided between the intermediate connecting plate 307 and the lower pressing plate 700 of the motor drive assembly 300 to assist the intermediate connecting plate 307 in moving up and down. The slider is fixed to the intermediate connecting plate 307 via a slider connecting plate 310, and the guide rail is installed on a guide rail upright plate fixed below the lower pressing plate 700. At the same time, two guide shafts 309 slide sequentially from bottom to top through the guide bushings of the lower pressing plate 700 and the upper pressing plate 600, and are finally fixed to the upper pressing block 800.

[0035] The intermediate connecting plate 307 is equipped with an origin plate 311, which is used to cooperate with the photoelectric sensor 313 installed on the side to detect the position of the upper clamping block 800.

[0036] The operation process of the motor drive assembly 2300 is as follows: Motor 2 301 provides power, which is transmitted to connecting block 2 304 via coupling 2 302 and belt drive mechanism 2 303. Eccentric block 2 305 mounted on connecting block 2 304 converts the rotational power of motor 2 301 into the reciprocating linear motion of transmission rod 2 306, thereby transmitting force to upper pressing block 800 via intermediate connecting plate 2 307, causing upper pressing block 800 to reciprocate up and down. When upper pressing block 800 moves downward, spring baffle 803 fixed to upper pressing block 800, slider 1 801 fixed to spring baffle 803, and slider 2 802 slidably fitted inside slider 1 801 simultaneously press down until the light-transmitting plate 804 at the bottom of slider 2 802 is pressed into contact with the roll film. During this process, the spring above slider 2 802 acts as a buffer to prevent damage to the product.

[0037] The top material assembly is as follows Figure 13 , 14 As shown, the device includes a pin guide block 900 positioned below a lower pressure plate 700. The pin guide block 900 has a stepped through-hole extending vertically, with the lower section of the stepped through-hole having a larger diameter than the upper section. The lower section of the stepped through-hole is used to press-fit a pin spring 901, and the upper section is used to accommodate a pin 902. A pin spring pressure plate 903 is fixed to the bottom of the pin guide block 900, and the pin spring pressure plate 903 stores force in the pin spring 901 inside the pin guide block 900, causing it to push the pin 902 upwards. The lower pressure plate 700 is positioned above the pin guide block 900 and has a stepped through-hole for accommodating the pin 902. The lower section of the stepped through-hole has a larger diameter than the upper section. The lower section of the stepped through-hole is adapted to accommodate a pin rod, and the upper section is adapted to accommodate a pin head.

[0038] The motor drive assembly 3 400 is used to push the ejector pin spring pressure plate 903 of the ejector assembly upward, thereby controlling the ejector pin guide block 900 above the ejector pin spring pressure plate 903 to move upward and push the ejector pin 902 upward through the ejector pin spring 901 inside it. Then, the ejector pin 902 pushes the tiny resin component above it to adhere to the film roll. Its structure is similar to that of the motor drive assembly 1 200, such as... Figure 15 As shown, the system includes a motor 401, a coupling 402, a belt drive mechanism 403, a connecting block 404, an eccentric block 405, an eccentric block fixing seat 406, an intermediate connecting plate 407, a motor fixing seat 408, and a guide shaft 409. The motor 401 is fixed to the base 100 via the motor fixing seat 408, located above the motor 201, and its kinetic energy is transmitted to the connecting block 404 via the coupling 402 and the belt drive mechanism 403. The connecting block 404 is connected to the top via an eccentric assembly. The needle spring pressure plate 903 abuts against the eccentric assembly, which includes an eccentric block fixing seat 406 fixed on the intermediate connecting plate 407 and an eccentric block 405 rotatably mounted on the eccentric block fixing seat 406. One end of the eccentric block 405 is connected to the connecting block 404 via a bearing, and the other end of the eccentric block 405 abuts against the bottom of the ejector spring pressure plate 903 via a bearing. The ejector spring pressure plate 903 is installed at the bottom of the ejector guide block 900 and applies an upward elastic thrust to the ejector spring 901 inside the ejector guide block 900. Guide shafts 409 are installed on both sides of the intermediate connecting plate 407, and the guide shafts 409 are slidably connected to the ejector guide block 900 via linear bearings.

[0039] The synchronous belt shaft of the belt drive mechanism 403 is equipped with a sensor plate with a notch for detecting the position of the ejector pin.

[0040] The operation process of the motor drive assembly 3400 is as follows: Motor 3 401 transmits power to connecting block 3 404 via coupling 3 402 and belt drive mechanism 3 403. Then, eccentric block 3 405 drives eccentric block fixing seat 406 and intermediate connecting plate 3 407 to move up and down, thereby pushing ejector spring pressure plate 903 and ejector guide block 900 above it to move up and down. When ejector guide block 900 moves up, it drives the internal ejector pin 902 to extend upward at the same time until its ejector head extends along the stepped through hole of lower pressure plate 700, pushing the small resin component above to the film strip and aligning it with it. During the lifting process, the ejector spring 901 below each ejector pin 902 can adapt to the tolerance of the resin component, prevent damage to the product, and ensure that each resin component is tightly attached to the film strip.

[0041] The laser welding machine in this embodiment has the following working process: First, motor drive assembly 200 and motor drive assembly 500 operate synchronously to position the film roll and the keyed conveyor plate. After the positioning process is completed, motor drive assembly 300 and motor drive assembly 400 continue to operate, pressing down the film roll and lifting the keyed points to achieve a tight fit between the two. Then, laser welding head 2 penetrates the light-transmitting plate 804 from top to bottom to perform laser welding on the finished product below. Once all welding processes are completed, all actuators return to their initial state, and the finished product is smoothly conveyed out of the equipment along with the film roll.

[0042] The laser welding machine of this embodiment has significant technical advantages over existing laser welding machines in the following aspects: 1. The present invention adopts a compact structural layout. When the upper space is occupied, the lower space can be used to complete the upper and lower pressing action, thereby improving space utilization and flexibly adapting to production line needs.

[0043] 2. This invention uses multiple motor drive components to work together to simultaneously position and press the film strip and tiny resin parts. The pressing component uses an elastic adaptive mechanism to achieve high-precision positioning and adjustable uniform pressure output.

[0044] This invention is not limited to the embodiments discussed above. The above description of specific embodiments is intended to describe and illustrate the technical solutions involved in this invention. Obvious modifications, substitutions, or combinations based on the teachings of this invention should also be considered to fall within the protection scope of this invention. The above specific embodiments are used to disclose the best implementation methods of this invention, so that those skilled in the art can apply various embodiments and alternatives of this invention to achieve the objectives of this invention.

Claims

1. A laser welding machine, comprising a welding positioning module (1) and a laser welding head (2), wherein the welding positioning module (1) is used to position and bond a roll of film material and a micro resin component, and the laser welding head (2) is disposed above the welding positioning module (1) for welding the bonded and positioned roll of film material and the micro resin component together; characterized in that, The welding positioning module (1) includes components disposed on the base (100): Motor drive assembly 1 (200) and upper positioning assembly driven and controlled by it; Motor drive assembly four (500) and the lower positioning assembly driven and controlled by it; Motor drive assembly 2 (300) and the film pressing assembly driven and controlled by it; as well as, Motor drive assembly three (400) and the top material assembly driven and controlled by it; The upper positioning component is used to position the point-to-point conveyor plate and the roll film, including an upper pressing plate (600) and a positioning pin (601) and a positioning needle (602) disposed at its bottom. The lower positioning component is used to position the point conveying plate downwards, including a lower clamping plate (700) and a positioning pin 2 (701) disposed on its end face. The film pressing assembly uses the following rolled film strip, including an upper pressing block (800), a slider one (801) slidably fitted inside the upper pressing block (800), and a slider two (802) slidably fitted inside the slider one (801). A light-transmitting plate (804) is installed at the bottom of the slider two (802). A spring is pressed onto the upper end of the slider two (802) and elastically connected to a spring baffle (803) via the spring. The spring baffle (803) is simultaneously fixed to the upper end face of the slider one (801) and the upper pressing block (800). The top material assembly is used to push the component to fit with the roll film material, including a lower pressure plate (700) and a pin guide block (900) disposed below it and movable relative to it. The pin guide block (900) and the lower pressure plate (700) are distributed vertically at intervals and have corresponding pin holes. The pin (902) passes through the pin holes of both the pin guide block (900) and the lower pressure plate (700).

2. The laser welding machine as described in claim 1, characterized in that, The base (100) of the welding positioning module (1) is assembled from a base plate (101) and a vertical plate (102). The vertical plate (102) is installed in the middle of the base plate (101) to separate and install and support the motor drive components on both sides. Motor drive component one (200), motor drive component two (300), and motor drive component three (400) are installed on one side of the vertical plate (102), and motor drive component four (500) is installed on the other side of the vertical plate (102).

3. The laser welding machine as described in claim 1, characterized in that, The motor drive assembly (200) is used to drive and control the upper pressure plate (600) to move up and down. It includes a motor (201), which transmits torque to a connecting block (204) via a coupling (202) and a belt drive mechanism (203). The connecting block (204) is connected to the lower end of a transmission rod (206) via an eccentric block (205) installed at the front end. The upper end of the transmission rod (206) is connected to an intermediate connecting plate (207). The intermediate connecting plate (207) is fixed to the upper pressure plate (600) via two guide shafts (209).

4. A laser welding machine as described in claim 1, characterized in that, The motor drive assembly four (500) is used to drive and control the lower pressing plate (700) to move up and down. It includes a motor four (501), which transmits torque to the ball screw (504) via a coupling four (502) and a belt drive mechanism four (503), and drives the slider fixing plate (506) to move up and down through the screw slider (505). The slider fixing plate (506) is fixed on the upright plate (102) of the base (100) by a linear guide rail. The upper part of the slider fixing plate (506) is connected to the middle connecting plate four (507) via the cam follower (510), and the middle connecting plate four (507) is fixed to the upper lower pressing plate (700) via the guide shafts four (508) on both sides.

5. A laser welding machine as described in claim 1, characterized in that, The motor drive assembly 2 (300) is used to drive and control the upper pressing block (800) and its internal slider 1 (801). The slider 2 (802) moves up and down and includes the motor 2 (301). The motor 2 (301) transmits torque to the connecting block 2 (304) via the coupling 2 (302) and the belt drive mechanism 2 (303). The connecting block 2 (304) is connected to the lower end of the transmission rod 2 (306) via the eccentric block 2 (305) installed at the front end. The upper end of the transmission rod 2 (306) is connected to the intermediate connecting plate 2 (307). The intermediate connecting plate 2 (307) is fixed to the upper pressing block (800) via the two guide shafts 2 (309).

6. A laser welding machine as described in claim 1, characterized in that, The motor drive assembly three (400) is used to drive and control the ejector pin guide block (900) to move upward and push the ejector pin (902) in the lower pressure plate (700) upward to lift the resin component to fit with the roll film material. It includes a motor three (401), which transmits torque to the connecting block three (404) via a coupling three (402) and a belt drive mechanism three (403). The connecting block three (404) is connected to the ejector pin spring pressure plate (903) via an eccentric assembly. The eccentric assembly includes an eccentric block fixing seat (406) fixed on the intermediate connecting plate three (407). And an eccentric block three (405) rotatably mounted on an eccentric block fixing seat (406). One end of the eccentric block three (405) is connected to the connecting block three (404) through a bearing, and the other end is abutted against the ejector spring pressure plate (903) through a bearing. The ejector spring pressure plate (903) is installed at the bottom of the ejector guide block (900) and applies an upward elastic thrust to the ejector spring inside the ejector guide block (900). The middle connecting plate three (407) is provided with guide shaft three (409) on both sides. The guide shaft three (409) is slidably connected to the ejector guide block (900) through a linear bearing.

7. A laser welding machine as described in claim 1, characterized in that, The positioning pin (602) is arranged in the pin hole of the positioning pin holder (603) formed at the bottom of the upper pressure plate (600), and a positioning pin baffle (604) fixedly connected to the upper pressure plate (600) is arranged above the positioning pin holder (603). The positioning pin baffle (604) is used to block and limit the positioning pin (602) when the upper pressure plate (600) is pressed down.

8. A laser welding machine as described in claim 1, characterized in that, The intermediate connecting plate 1 (207) of the motor drive assembly 1 (200) and the intermediate connecting plate 2 (307) of the motor drive assembly 2 (300) are both connected to the lower pressing plate (700) through the slider guide rail assembly.

9. A laser welding machine as described in claim 8, characterized in that, The intermediate connecting plate (207) is equipped with an origin plate (211) for use in conjunction with the side-mounted photoelectric sensor (212) to detect the position and orientation of the upper positioning component. The intermediate connecting plate 2 (307) is equipped with origin plate 2 (311) to cooperate with the photoelectric sensor 2 (313) installed on the side to detect the position of the upper clamping block (800).

10. A laser welding machine as described in claim 1, characterized in that, The ejector guide block (900) has a stepped through hole that extends vertically. The lower section of the stepped through hole is used to press and install the ejector spring (901), and the upper section of the stepped through hole is used to accommodate the ejector pin (902). An ejector spring pressure plate (903) is fixed at the bottom of the ejector guide block (900). The ejector spring pressure plate (903) is used to store force on the ejector spring (901) inside the ejector guide block (900) so that it pushes the ejector pin (902) upward. The lower pressing plate (700) is arranged above the ejector guide block (900) and has a stepped through hole for accommodating the ejector pin (902). The lower section of the stepped through hole is adapted to the ejector rod, and the upper section of the stepped through hole is adapted to the ejector head.

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