Laser welding machine and process for welding electric toothbrush motor

Abstract

The invention belongs to the technical field of electric toothbrush production processes, and particularly relates to a laser welding machine and process for welding an electric toothbrush motor, and the laser welding machine comprises a welding table, a driving guide rail, a sliding sleeve sliding fit, a sliding sleeve, a plastic fixing plate, a circuit board and a motor body; the welding assembly comprises an electric welding machine and a welding needle, an isolation sleeve is fixedly installed at the bottom of the electric welding machine, the welding needle is located in the isolation sleeve, a rubber telescopic cylinder is installed at the bottom of the isolation sleeve, and an air hole is formed in the top of the isolation sleeve. In the rotating process of a guide rod, a pressing block on the guide rod presses a rubber telescopic cylinder, gas in the rubber telescopic cylinder is discharged from an air hole in the top of an isolation sleeve through the bottom of the isolation sleeve, and welding heat is discharged from the air hole in the top of the isolation sleeve; and the discharged heat can be effectively prevented from being in contact with devices around the power supply welding head and influencing the devices.

Description

Technical Field

[0001] The invention belongs to the technical field of electric toothbrush production technology, and specifically relates to a laser welding machine and a technology for welding electric toothbrush motors. Background Art

[0002] An electric toothbrush is a toothbrush that uses the rapid rotation or vibration of the electric motor to make the brush head vibrate at a high frequency, thereby cleaning the teeth. An electric toothbrush is mainly composed of multiple components such as a plastic shell, a motor, a circuit board, a plastic fixing plate, and a battery. The production process of an electric toothbrush is as follows: first, the motor, battery, and circuit board are installed on the plastic fixing plate, then the battery and motor are connected to the circuit board through a wiring harness, and finally the plastic fixing plate is inserted into the plastic shell to install the electric control components of the electric toothbrush.

[0003] During the welding process of the power welding head of the motor circuit and the circuit board, the high temperature generated by the welding machine can easily melt the components near the power welding head. Usually, an isolation device is used to isolate the welding needle to prevent the welding heat from being transferred to the components near the power welding head. However, although the isolation device can isolate the welding needle, the welding heat will also accumulate in the isolation device, resulting in slow cooling of the welding part and poor welding efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a laser welding machine and process for welding electric toothbrush motors in view of the deficiencies of the prior art.

[0005] The objective of the present invention can be achieved through the following technical scheme: a laser welding machine for welding electric toothbrush motors, comprising a welding table, a driving guide rail is installed on the welding table, the driving guide rail is slidably matched with a sliding sleeve, a motor body, a plastic fixing plate and a circuit board are respectively placed on the sliding sleeve, the motor body and the circuit board are respectively installed on both sides of the plastic fixing plate, and the motor body is connected to the circuit board; a gantry is installed on the welding table, a welding assembly is installed on the gantry, the welding assembly comprises an electric welder and a welding pin on the electric welder, an isolation sleeve is fixedly installed at the bottom of the electric welder, the welding pin is located inside the isolation sleeve, a rubber telescopic cylinder is installed at the bottom of the isolation sleeve, an air hole is opened at the top of the isolation sleeve, the air outlet of the rubber telescopic cylinder faces the inside of the isolation sleeve, and the gas at the bottom of the isolation sleeve is accelerated to be discharged through the air hole at the top of the isolation sleeve by pressing the rubber telescopic cylinder.

[0006] As a further optimization or improvement of this solution, a rotating sleeve is installed on the isolation sleeve, a spiral groove is opened on the isolation sleeve, a slider is installed inside the rotating sleeve, and the slider and the spiral groove are slidably matched; a cylinder is fixedly installed on the isolation sleeve, and the output end of the cylinder is connected to a push block, and the push block and the rotating sleeve are rotatably matched.

[0007] As a further optimization or improvement of the present solution, an annular groove is provided on the rotating sleeve, and the push block is slidably matched with the annular groove.

[0008] As a further optimization or improvement of this solution, a liftable guide rod is installed at the bottom of the rotating sleeve, and a pressure block is fixedly installed on the guide rod, and the pressure block presses the rubber telescopic cylinder; when the cylinder is started, the cylinder drives the push block and the rotating sleeve to move downward, and the rotating sleeve cooperates with the slider and the spiral groove to rotate downward in a spiral.

[0009] As a further optimization or improvement of this solution, a return spring is installed in the rotating sleeve, and the return spring is connected to the guide rod.

[0010] As a further optimization or improvement of this solution, the circuit board includes a power welding head and a wire storage slot installed near the power welding head, a baffle is installed on the top of the wire storage slot, a card block is installed on the side wall of the wire storage slot, the guide rod and the wire storage slot are slidably matched, a wire hole is opened on the plastic fixing plate, the line of the motor body passes through the wire hole and is placed on the power welding head, and a pressure pad is installed at the bottom of the isolation sleeve, and the pressure pad presses the motor body line.

[0011] As a further optimization or improvement of this solution, a material box is installed at the bottom of the push block, and a plurality of buckles are installed in the material box, which are engaged with the blocks on the wire storage slot; the cylinder passes through the push block to press the buckles inside the material box, and engages the buckles with the blocks on the wire storage slot.

[0012] A laser welding process for welding an electric toothbrush motor, the process is applied to the laser welding machine for welding an electric toothbrush motor as described above, the method comprising the following steps: Step S1: fix the motor body and the circuit board to the two ends of the plastic fixing plate respectively to reduce the influence of the working vibration of the motor body on the circuit board. Meanwhile, the power line of the motor body passes through the wire hole and is placed on the power welding head. The assembled motor body and circuit board are placed on the sliding sleeve. The driving guide rail transports the sliding sleeve to the bottom of the welding assembly. Step S2: starting the welding assembly, the welding assembly drives the isolation sleeve to move downward, and the isolation sleeve is sleeved on the power welding head, and the power welding head is isolated from nearby devices by the isolation sleeve. At the same time, the pressure pad at the bottom of the isolation sleeve presses the power line of the motor body; Step S3: when the welding assembly welds the power supply welding head and the power supply line of the motor body, the isolation sleeve isolates the welding heat inside the isolation sleeve, so that the heat accumulated inside the isolation sleeve accelerates the melting of the welding point on the power supply welding head; Step S4: During the welding process, the cylinder is started, and the cylinder pushes the push block downward. Under the sliding cooperation between the slider and the spiral groove, the rotating sleeve spirally rotates downward, and the guide rod retracts into the inside of the rotating sleeve and presses the reset spring. At the same time, the rotating sleeve drives the guide rod to rotate; Step S5: During the rotation of the guide rod, the pressure block on the guide rod presses the rubber telescopic tube, and the gas inside the rubber telescopic tube is discharged from the air holes at the top of the isolation sleeve through the bottom of the isolation sleeve, and the welding heat is discharged from the air holes at the top of the isolation sleeve.

[0013] As a further optimization or improvement of this solution, step S4 specifically includes the following steps: Step S41: during the rotation of the guide rod, the guide rod drives the redundant power lines of the motor body to be pushed into the wire storage slot, and the redundant power lines are introduced into the wire storage slot; Step S42: As the cylinder drives the push block downward, the material box at the bottom of the push block moves downward accordingly. When the material box contacts the wire storage slot, the cylinder pushes the buckle inside the material box downward so that the buckle engages with the block on the wire storage slot to fix the redundant power line inside the wire storage slot.

[0014] Beneficial effects of the present invention: (1) The present invention drives the isolation sleeve downward through the welding assembly, and sleeves the isolation sleeve on the power welding head. The power welding head is isolated from nearby devices through the isolation sleeve. At the same time, the pressure pad at the bottom of the isolation sleeve presses the power line of the motor body. When the welding assembly welds the power welding head and the power line of the motor body, the isolation sleeve isolates the welding heat inside the isolation sleeve, so that the heat accumulated inside the isolation sleeve accelerates the melting of the solder joint on the power welding head, improves the welding efficiency, and prevents the welding heat from affecting the devices near the power welding head.

[0015] (2) During the welding process, the cylinder pushes the push block downward. Under the sliding cooperation between the slider and the spiral groove, the rotating sleeve spirally rotates downward, the guide rod retracts into the inside of the rotating sleeve and presses the reset spring. At the same time, the rotating sleeve drives the guide rod to rotate, and the guide rod drives the excess power line of the motor body to be pushed into the wire storage groove, and the excess power line is introduced into the wire storage groove. The loose power line is tightened to avoid scratches between the power line and the plastic shell during the assembly of the electric toothbrush.

[0016] (3) When the guide rod of the present invention rotates, the pressure block on the guide rod presses the rubber telescopic tube, and the gas inside the rubber telescopic tube is discharged from the air holes at the top of the isolation sleeve through the bottom of the isolation sleeve. After the welding heat is discharged from the air holes at the top of the isolation sleeve, it can effectively prevent the discharged heat from contacting the components around the power welding head and affecting the components. The present invention accelerates the gas circulation at the welding part by pressing the rubber telescopic tube, thereby improving the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a front view of the overall structure of the present invention.

[0020] Figure 3It is a schematic diagram of the connection structure between the plastic fixing plate, the circuit board and the motor body.

[0021] Figure 4 for Figure 3 A magnified view of the structure of part A.

[0022] Figure 5 Schematic diagram of the welding assembly structure.

[0023] Figure 6 It is a schematic diagram of the connection structure between the electric welding machine and the isolation sleeve.

[0024] Figure 7 This is an exploded view of the overall structure of the welded assembly.

[0025] Figure 8 It is a cross-sectional view of the overall structure of the welding assembly.

[0026] Fig. 9 for Figure 8 A magnified view of the structure of part B.

[0027] Fig.10 Schematic diagram of the internal structure of the material box.

[0028] The following are marked in the figure: 1. welding table; 2. gantry; 3. driving guide rail; 4. sliding sleeve; 5. motor body; 6. welding assembly; 601. electric welding machine; 602. welding needle; 603. isolating sleeve; 604. air hole; 605. spiral groove; 606. rubber telescopic cylinder; 607. cylinder; 608. push block; 609. material box; 610. rotating sleeve; 611. guide rod; 612. reset spring; 613. pressure block; 614. pressure pad; 615. slider; 616. ring groove; 617. buckle; 7. plastic fixing plate; 8. circuit board; 801. power welding head; 802. wire storage slot; 803. clamping block; 804. baffle; 9. wire through hole. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 9A laser welding machine for welding electric toothbrush motors, comprising a welding table 1, on which a driving guide rail 3 is installed, the driving guide rail 3 is slidably matched with a sliding sleeve 4, a motor body 5, a plastic fixing plate 7 and a circuit board 8 are respectively placed on the sliding sleeve 4, the motor body 5 and the circuit board 8 are respectively installed on both sides of the plastic fixing plate 7, and the motor body 5 is connected to the circuit board 8; a gantry 2 is installed on the welding table 1, and a welding assembly 6 is installed on the gantry 2, the welding assembly 6 comprises an electric welder 601 and a welding pin 602 on the electric welder 601, an isolation sleeve 603 is fixedly installed at the bottom of the electric welder 601, the welding pin 602 is located inside the isolation sleeve 603, a rubber telescopic cylinder 606 is installed at the bottom of the isolation sleeve 603, an air hole 604 is opened at the top of the isolation sleeve 603, and the air outlet of the rubber telescopic cylinder 606 faces the inside of the isolation sleeve 603, and the gas at the bottom of the isolation sleeve 603 is accelerated by pressing the rubber telescopic cylinder 606 to be discharged through the air hole 604 at the top of the isolation sleeve 603.

[0031] Specifically, a rotating sleeve 610 is installed on the isolation sleeve 603, a spiral groove 605 is provided on the isolation sleeve 603, a slider 615 is installed inside the rotating sleeve 610, and the slider 615 is slidably matched with the spiral groove 605; a cylinder 607 is fixedly installed on the isolation sleeve 603, and the output end of the cylinder 607 is connected to a push block 608, and the push block 608 is rotatably matched with the rotating sleeve 610.

[0032] Specifically, the rotating sleeve 610 is provided with an annular groove 616 , and the push block 608 is slidably matched with the annular groove 616 .

[0033] Specifically, a liftable guide rod 611 is installed at the bottom of the rotating sleeve 610, and a pressure block 613 is fixedly installed on the guide rod 611, and the pressure block 613 presses the rubber telescopic cylinder 606; when the cylinder 607 is started, the cylinder 607 drives the push block 608 and the rotating sleeve 610 to move downward, and the rotating sleeve 610 rotates downward in a spiral manner in cooperation with the slider 615 and the spiral groove 605.

[0034] Specifically, a return spring 612 is installed in the rotating sleeve 610 , and the return spring 612 is connected to the guide rod 611 .

[0035] The assembly process of the electric toothbrush is as follows; first, the motor body 5 and the circuit board 8 are fixed on both ends of the plastic fixing plate 7 respectively. The plastic fixing plate 7 separates the motor body 5 and the circuit board 8 to reduce the impact of the working vibration of the motor body 5 on the circuit board 8. At the same time, the power line of the motor body 5 passes through the wire hole 9 and is placed on the power welding head 801. This operation can be completed by a robotic arm. The assembled motor body 5 and circuit board 8 are placed on the sliding sleeve 4. The driving guide rail 3 transports the sliding sleeve 4 to the bottom of the welding assembly 6.

[0036] During welding, the welding assembly 6 is started, and the welding assembly 6 drives the isolation sleeve 603 to move downward, and the isolation sleeve 603 is put on the power welding head 801. The power welding head 801 is isolated from nearby devices through the isolation sleeve 603. At the same time, the pressure pad 614 at the bottom of the isolation sleeve 603 presses the power line of the motor body 5.

[0037] When the welding assembly 6 welds the power supply welding head 801 and the power supply line of the motor body 5, the isolation sleeve 603 isolates the welding heat inside the isolation sleeve 603, so that the heat accumulated inside the isolation sleeve 603 accelerates the melting of the solder joints on the power supply welding head 801, thereby improving the welding efficiency and preventing the welding heat from affecting the devices near the power supply welding head 801.

[0038] In actual use, the reserved length of the power line of the motor body 5 is generally long, so as to facilitate the welding of the power line with the power welding head 801. However, after welding, the power line is loose. In the process of assembling the electric toothbrush, the motor body 5 and the circuit board 8 fixed on the plastic fixing plate 7 need to be inserted into the plastic shell together. In this process, the loose power line of the motor body 5 is very likely to be hung up by the plastic shell, resulting in welding failure.

[0039] During the welding process, the cylinder 607 is started, and the cylinder 607 pushes the push block 608 to move downward. Under the sliding cooperation between the slider 615 and the spiral groove 605, the rotating sleeve 610 spirally rotates downward, and the guide rod 611 retracts into the inside of the rotating sleeve 610 and presses the reset spring 612. At the same time, the rotating sleeve 610 drives the guide rod 611 to rotate, and the guide rod 611 drives the excess power line of the motor body 5 to be pushed into the wire storage groove 802, and the excess power line is introduced into the wire storage groove 802. The loose power line is tightened to avoid scratches between the power line and the plastic shell during the assembly of the electric toothbrush. At the same time, in this process, since the pressure pad 614 presses the power line at the welding end, under the action of the pressure pad 614, the movement of the guide rod 611 is prevented from interfering with the power line at the welding end.

[0040] Specifically, during the rotation of the guide rod 611, the pressure block 613 on the guide rod 611 presses the rubber telescopic tube 606, and the gas inside the rubber telescopic tube 606 is discharged from the bottom of the isolation sleeve 603 and the air hole 604 at the top of the isolation sleeve 603, thereby accelerating the dissipation of the welding heat inside the isolation sleeve 603. After the welding heat is discharged from the air hole 604 at the top of the isolation sleeve 603, it can effectively prevent the discharged heat from contacting and affecting the devices around the power welding head 801.

[0041] It should be noted that the air holes 604 are arranged at intervals, and the cylinder 607 is installed at the intervals between the air holes 604 . Therefore, the heat discharged from the air holes 604 will not affect the cylinder 607 .

[0042] See also Figure 3-Figure 10 The circuit board 8 includes a power welding head 801 and a wire storage slot 802 installed near the power welding head 801, a baffle 804 is installed on the top of the wire storage slot 802, a block 803 is installed on the side wall of the wire storage slot 802, the guide rod 611 is slidably matched with the wire storage slot 802, a wire through hole 9 is opened on the plastic fixing plate 7, the line of the motor body 5 passes through the wire through hole 9 and is placed on the power welding head 801, and a pressure pad 614 is installed at the bottom of the isolation sleeve 603, and the pressure pad 614 presses the line of the motor body 5.

[0043] Specifically, a material box 609 is installed at the bottom of the push block 608, and a plurality of buckles 617 are installed in the material box 609, and the buckles 617 are engaged with the blocks 803 on the wire storage slot 802; the cylinder 607 passes through the push block 608 to press the buckles 617 inside the material box 609, and engages the buckles 617 with the blocks 803 on the wire storage slot 802.

[0044] It should be noted that see Figure 4 After the guide rod 611 guides the redundant power line of the motor body 5 into the wire storage slot 802, the cylinder 607 drives the guide rod 611 to reset, so that the guide rod 611 is separated from the wire storage slot 802. At this time, the redundant power line is blocked by the baffle 804 at the top of the wire storage slot 802 in the wire storage slot 802. In order to prevent the power line of the motor body 5 from being separated from the wire storage slot 802 during the assembly process.

[0045] During the welding process, the cylinder 607 is started, and the cylinder 607 pushes the push block 608 to move downward. Under the sliding cooperation between the slider 615 and the spiral groove 605, the rotating sleeve 610 spirally rotates downward, and at the same time, the rotating sleeve 610 drives the guide rod 611 to rotate, and the guide rod 611 drives the redundant power line of the motor body 5 to push into the wire storage groove 802, and the redundant power line is introduced into the wire storage groove 802. At the same time, as the cylinder 607 drives the push block 608 to move downward, the material box 609 at the bottom of the push block 608 moves downward accordingly. When the material box 609 contacts the wire storage groove 802, see Fig.10 The cylinder 607 pushes the buckle 617 inside the material box 609 downward, so that the buckle 617 engages with the block 803 on the wire storage slot 802, fixes the redundant power line in the wire storage slot 802, and prevents the line from falling out of the wire storage slot 802.

[0046] See also Figure 1-Figure 9 As shown, the present invention is a laser welding process for welding an electric toothbrush motor, the process is applied to the laser welding machine for welding an electric toothbrush motor as described in the above embodiment, and the method comprises the following steps: Step S1: fix the motor body 5 and the circuit board 8 to the two ends of the plastic fixing plate 7 respectively, reduce the influence of the working vibration of the motor body 5 on the circuit board 8, and at the same time, the power line of the motor body 5 passes through the wire hole 9 and is placed on the power welding head 801, and the assembled motor body 5 and the circuit board 8 are placed on the sliding sleeve 4, and the driving guide rail 3 transports the sliding sleeve 4 to the bottom of the welding assembly 6; Step S2: Start the welding assembly 6, the welding assembly 6 drives the isolation sleeve 603 to move downward, and the isolation sleeve 603 is sleeved on the power welding head 801, and the power welding head 801 is isolated from nearby devices by the isolation sleeve 603. At the same time, the pressure pad 614 at the bottom of the isolation sleeve 603 presses the power line of the motor body 5; Step S3: When the welding assembly 6 welds the power supply welding head 801 and the power supply line of the motor body 5, the isolation sleeve 603 isolates the welding heat inside the isolation sleeve 603, so that the heat accumulated inside the isolation sleeve 603 accelerates the melting of the welding point on the power supply welding head 801; Step S4: During the welding process, the cylinder 607 is started, and the cylinder 607 pushes the push block 608 to move downward. Under the sliding cooperation between the slider 615 and the spiral groove 605, the rotating sleeve 610 spirally rotates downward, and the guide rod 611 retracts into the rotating sleeve 610 and presses the reset spring 612. At the same time, the rotating sleeve 610 drives the guide rod 611 to rotate; Step S5: During the rotation of the guide rod 611, the pressure block 613 on the guide rod 611 presses the rubber telescopic tube 606, and the gas inside the rubber telescopic tube 606 is discharged from the air hole 604 at the top of the isolation sleeve 603 through the bottom of the isolation sleeve 603, thereby accelerating the dissipation of the welding heat inside the isolation sleeve 603, and the welding heat is discharged from the air hole 604 at the top of the isolation sleeve 603.

[0047] like Figure 2-Figure 10 As shown, as a preferred embodiment of the present invention, step S4 specifically includes the following steps: Step S41: During the rotation of the guide rod 611, the guide rod 611 drives the redundant power lines of the motor body 5 to be pushed into the line storage slot 802, and the redundant power lines are introduced into the interior of the line storage slot 802; Step S42: As the cylinder 607 drives the push block 608 to move downward, the material box 609 at the bottom of the push block 608 moves downward accordingly. When the material box 609 contacts the wire storage slot 802, the cylinder 607 pushes the buckle 617 inside the material box 609 downward, so that the buckle 617 engages with the block 803 on the wire storage slot 802, thereby fixing the redundant power lines inside the wire storage slot 802.

[0048] The implementation principle of the present invention is: Before use, first fix the motor body 5 and the circuit board 8 on the two ends of the plastic fixing plate 7 respectively. The plastic fixing plate 7 separates the motor body 5 and the circuit board 8 to reduce the impact of the working vibration of the motor body 5 on the circuit board 8. At the same time, the power line of the motor body 5 passes through the wire hole 9 and is placed on the power welding head 801. The assembled motor body 5 and circuit board 8 are placed on the sliding sleeve 4. The driving guide rail 3 transports the sliding sleeve 4 to the bottom of the welding assembly 6.

[0049] When in use, start the welding assembly 6, which drives the isolation sleeve 603 to move downward, and puts the isolation sleeve 603 on the power welding head 801. The power welding head 801 is isolated from nearby devices through the isolation sleeve 603. At the same time, the pressure pad 614 at the bottom of the isolation sleeve 603 presses the power line of the motor body 5.

[0050] When the welding assembly 6 welds the power supply welding head 801 and the power supply line of the motor body 5, the isolation sleeve 603 isolates the welding heat inside the isolation sleeve 603, so that the heat accumulated inside the isolation sleeve 603 accelerates the melting of the solder joints on the power supply welding head 801, thereby improving the welding efficiency and preventing the welding heat from affecting the devices near the power supply welding head 801.

[0051] In actual use, the reserved length of the power line of the motor body 5 is generally long, so as to facilitate the welding of the power line with the power welding head 801. However, after welding, the power line is loose. In the process of assembling the electric toothbrush, the motor body 5 and the circuit board 8 fixed on the plastic fixing plate 7 need to be inserted into the plastic shell together. In this process, the loose power line of the motor body 5 is very likely to be hung up by the plastic shell, resulting in welding failure.

[0052] During the welding process, the cylinder 607 is started, and the cylinder 607 pushes the push block 608 to move downward. Under the sliding cooperation between the slider 615 and the spiral groove 605, the rotating sleeve 610 spirally rotates downward, and the guide rod 611 retracts into the inside of the rotating sleeve 610 and presses the reset spring 612. At the same time, the rotating sleeve 610 drives the guide rod 611 to rotate, and the guide rod 611 drives the excess power line of the motor body 5 to be pushed into the wire storage groove 802, and the excess power line is introduced into the wire storage groove 802. The loose power line is tightened to avoid scratches between the power line and the plastic shell during the assembly of the electric toothbrush. At the same time, in this process, since the pressure pad 614 presses the power line at the welding end, under the action of the pressure pad 614, the movement of the guide rod 611 is prevented from interfering with the power line at the welding end.

[0053] Specifically, during the rotation of the guide rod 611, the pressure block 613 on the guide rod 611 presses the rubber telescopic tube 606, and the gas inside the rubber telescopic tube 606 is discharged from the bottom of the isolation sleeve 603 and the air hole 604 at the top of the isolation sleeve 603, thereby accelerating the dissipation of the welding heat inside the isolation sleeve 603. After the welding heat is discharged from the air hole 604 at the top of the isolation sleeve 603, it can effectively prevent the discharged heat from contacting and affecting the devices around the power welding head 801.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A laser welding machine for welding electric toothbrush motors, characterized in that: The invention comprises a welding table (1), a driving guide rail (3) is installed on the welding table (1), the driving guide rail (3) and the sliding sleeve (4) are slidably matched, a motor body (5), a plastic fixing plate (7) and a circuit board (8) are respectively placed on the sliding sleeve (4), the motor body (5) and the circuit board (8) are respectively installed on both sides of the plastic fixing plate (7), and the motor body (5) and the circuit board (8) are connected; A gantry (2) is mounted on the welding table (1), and a welding assembly (6) is mounted on the gantry (2). The welding assembly (6) comprises an electric welder (601) and a welding pin (602) on the electric welder (601). An isolation sleeve (603) is fixedly mounted on the bottom of the electric welder (601), and the welding pin (602) is located inside the isolation sleeve (603). A rubber telescopic cylinder (606) is mounted on the bottom of the isolation sleeve (603), and an air hole (604) is provided on the top of the isolation sleeve (603). The air outlet of the rubber telescopic cylinder (606) faces the inside of the isolation sleeve (603), and the gas at the bottom of the isolation sleeve (603) is accelerated to be discharged through the air hole (604) on the top of the isolation sleeve (603) by pressing the rubber telescopic cylinder (606).

2. A laser welding machine for welding electric toothbrush motors according to claim 1, characterized in that: A rotating sleeve (610) is installed on the isolation sleeve (603), a spiral groove (605) is provided on the isolation sleeve (603), a sliding block (615) is installed inside the rotating sleeve (610), and the sliding block (615) and the spiral groove (605) are slidably matched; a cylinder (607) is fixedly installed on the isolation sleeve (603), an output end of the cylinder (607) is connected to a push block (608), and the push block (608) and the rotating sleeve (610) are rotatably matched.

3. The laser welding machine for welding electric toothbrush motors according to claim 2, characterized in that: The rotating sleeve (610) is provided with an annular groove (616), and the push block (608) is slidably engaged with the annular groove (616).

4. The laser welding machine for welding electric toothbrush motors according to claim 2, characterized in that: A liftable guide rod (611) is installed at the bottom of the rotating sleeve (610), and a pressure block (613) is fixedly installed on the guide rod (611). The pressure block (613) presses the rubber telescopic cylinder (606). When the cylinder (607) is started, the cylinder (607) drives the push block (608) and the rotating sleeve (610) to move downward, and the rotating sleeve (610) rotates spirally downward in cooperation with the slider (615) and the spiral groove (605).

5. The laser welding machine for welding electric toothbrush motors according to claim 4, characterized in that: A return spring (612) is installed in the rotating sleeve (610), and the return spring (612) is connected to the guide rod (611).

6. The laser welding machine for welding electric toothbrush motors according to claim 2, characterized in that: The circuit board (8) comprises a power welding head (801) and a wire storage slot (802) installed near the power welding head (801); a baffle (804) is installed on the top of the wire storage slot (802); a clamping block (803) is installed on the side wall of the wire storage slot (802); a guide rod (611) is slidably matched with the wire storage slot (802); a wire through hole (9) is provided on the plastic fixing plate (7); the wire of the motor body (5) passes through the wire through hole (9) and is placed on the power welding head (801); a pressure pad (614) is installed on the bottom of the isolation sleeve (603); the pressure pad (614) presses the wire of the motor body (5).

7. A laser welding machine for welding electric toothbrush motors according to claim 6, characterized in that: A material box (609) is installed at the bottom of the push block (608), and a plurality of buckles (617) are installed in the material box (609), and the buckles (617) are engaged with the buckles (803) on the wire storage groove (802); the cylinder (607) passes through the push block (608) to press the buckles (617) inside the material box (609), so that the buckles (617) are engaged with the buckles (803) on the wire storage groove (802).

8. A laser welding process for welding electric toothbrush motors, characterized in that: The process is applied to a laser welding machine for welding electric toothbrush motors as described in any one of claims 1 to 7 above, and the method comprises the following steps: Step S1: The motor body (5) and the circuit board (8) are respectively fixed to the two ends of the plastic fixing plate (7) to reduce the influence of the working vibration of the motor body (5) on the circuit board (8). At the same time, the power line of the motor body (5) passes through the wire hole (9) and is placed on the power welding head (801). The assembled motor body (5) and the circuit board (8) are placed on the sliding sleeve (4). The driving guide rail (3) transports the sliding sleeve (4) to the bottom of the welding assembly (6); Step S2: starting the welding assembly (6), the welding assembly (6) drives the isolation sleeve (603) to move downward, and the isolation sleeve (603) is sleeved on the power welding head (801), and the power welding head (801) is isolated from nearby devices by the isolation sleeve (603), and at the same time, the pressure pad (614) at the bottom of the isolation sleeve (603) presses the power line of the motor body (5); Step S3: when the welding assembly (6) welds the power supply welding head (801) and the power supply line of the motor body (5), the isolation sleeve (603) isolates the welding heat inside the isolation sleeve (603), so that the heat accumulated inside the isolation sleeve (603) accelerates the melting of the welding point on the power supply welding head (801); Step S4: During the welding process, the cylinder (607) is started, and the cylinder (607) pushes the push block (608) downward. Under the sliding cooperation between the slider (615) and the spiral groove (605), the rotating sleeve (610) spirally rotates downward, and the guide rod (611) retracts into the inside of the rotating sleeve (610) and presses the return spring (612). At the same time, the rotating sleeve (610) drives the guide rod (611) to rotate; Step S5: During the rotation of the guide rod (611), the pressure block (613) on the guide rod (611) presses the rubber telescopic tube (606), and the gas inside the rubber telescopic tube (606) is discharged from the bottom of the isolation sleeve (603) and from the air hole (604) at the top of the isolation sleeve (603), thereby accelerating the dissipation of welding heat inside the isolation sleeve (603), and the welding heat is discharged from the air hole (604) at the top of the isolation sleeve (603).

9. The laser welding process for welding electric toothbrush motors according to claim 8, characterized in that: The step S4 specifically comprises the following steps: Step S41: during the rotation of the guide rod (611), the guide rod (611) drives the redundant power lines of the motor body (5) to be pushed into the line storage slot (802), thereby introducing the redundant power lines into the interior of the line storage slot (802); Step S42: As the cylinder (607) drives the push block (608) to move downward, the material box (609) at the bottom of the push block (608) moves downward accordingly. When the material box (609) contacts the wire storage slot (802), the cylinder (607) pushes the buckle (617) inside the material box (609) downward, so that the buckle (617) engages with the block (803) on the wire storage slot (802), thereby fixing the redundant power line inside the wire storage slot (802).

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