Electric toothbrush shaft core assembling machine and electric toothbrush shaft core assembling method

Abstract

The invention relates to the technical field of electric toothbrush production, in particular to an electric toothbrush shaft core assembling machine and an assembling method.The electric toothbrush shaft core assembling machine comprises a machine table, a rotating driving mechanism, a rotating disc, a plurality of carriers, a shaft rod feeding device, a shaft sleeve sleeving device, a flattening position device, a spinning assembling connector device, a fixed-length assembling connector device and a fixed-length assembling feeding device; the shaft rod feeding device feeds a shaft rod to the carrier, the shaft sleeve sleeving device sleeves the shaft rod with a shaft sleeve, the flattening position device presses and forms a flat position at the top end of the shaft rod, the spinning assembly joint device assembles a joint at the flat position of the shaft rod in a spinning mode, and the fixed-length assembly joint device assembles the joint on the shaft rod in a fixed-length mode. And the fixed-length assembly feeding device transfers the shaft lever assembled with the joint to the fixed-length assembly joint device. According to the production line, feeding of the shaft rod, sleeving of the shaft sleeve, flat position forming of the shaft rod, spinning assembly of the connector and fixed-length assembly of the connector can be automatically achieved, and the efficiency and quality of producing the electric toothbrush shaft core are improved.

Description

Technical Field

[0001] The invention relates to the technical field of electric toothbrush production, in particular to an electric toothbrush shaft core assembly machine and an electric toothbrush shaft core assembly method. Background Art

[0002] In the process of producing the shaft core of an electric toothbrush, the shaft rod, the shaft sleeve and the joint need to be assembled together. Among the existing patents, the Chinese patent document with application number 201822113430.0 discloses an automatic shaft core assembly machine, including a shaft sleeve vibration disk, a shaft core discharge bin and an assembly platform, the assembly platform includes a slot plate and a guide block located on one side of the slot plate, the slot plate is provided with a first slot for accommodating the shaft core (shaft rod), the bottom of the first slot is provided with a movable plate for supporting the shaft core, the guide block is provided with a cavity adapted to the shaft sleeve, and one side of the guide block is provided with a second slot corresponding to the first slot, the shaft sleeve vibration disk is located above the guide block, and the discharge port of the shaft sleeve vibration disk is connected to the cavity, the shaft core discharge bin is located above the slot plate, and one end of the slot plate is provided with a pressing mechanism for pressing the shaft core falling into the first slot into the shaft sleeve. By setting a shaft sleeve vibration plate, a shaft core feeding bin, a movable plate for supporting the shaft core and a pressing mechanism, the shaft core (shaft rod) can be pressed into the shaft sleeve to replace manual assembly. However, this patent document can only realize the assembly of the shaft rod and the sleeve, and cannot realize the automated assembly of the shaft rod, sleeve and joint, making it difficult to improve the production efficiency and quality of the shaft core.

[0003] In addition, a Chinese patent document with application number 202222760179.3 discloses an electric toothbrush inner shaft assembly machine, including a frame with a table plate on the frame, the assembly machine also including a turntable mechanism, the turntable mechanism including a turntable rotatably mounted on the table plate, and a power unit connected to the turntable drive and driving the turntable to perform circular motion, the power unit is fixed to the bottom surface of the table plate, the edge of the turntable, and six groups of clamping mechanisms distributed in a ring array; on the table plate around the turntable, six stations are distributed in a ring array, and the six groups of clamping mechanisms are aligned with the six stations every time they rotate an angle. The patent document uses a turntable to move the product, and sets a loading station and a processing station around the turntable, so that each process is completed through mechanical automation. However, the patent document realizes the assembly of the inner shaft, spring and T-needle, which is different from the assembly of the shaft rod, bushing and joint, and cannot realize the assembly of the shaft rod, bushing and joint.

[0004] Therefore, the defects are very obvious and a solution is urgently needed. Summary of the invention

[0005] In order to solve the above technical problems, the object of the present invention is to provide an electric toothbrush shaft core assembly machine and an electric toothbrush shaft core assembly method.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] An electric toothbrush shaft core assembly machine comprises a machine platform, a rotating drive mechanism mounted on the machine platform, a turntable mounted on the rotating end of the rotating drive mechanism, a plurality of carriers mounted on the turntable in a circular array, and a shaft feeding device, a sleeve mounting device, a flattening device, a spinning assembly joint device and a fixed-length assembly joint device respectively mounted on the machine platform and distributed in sequence on the circumference of the turntable. The machine platform is equipped with a fixed-length assembly feeding device. The shaft feeding device is used to feed the shaft onto the carrier. The sleeve mounting device is used to mount the sleeve on the shaft. The flattening device is used to press and form a flat position at the top end of the shaft. The spinning assembly joint device is used to spin and assemble the joint at the flat position of the shaft. The fixed-length assembly joint device is used to assemble the joint on the shaft in a fixed length. The fixed-length assembly feeding device is used to transfer the shaft with the joint assembled and carried by the carrier to the fixed-length assembly joint device.

[0008] Furthermore, the shaft feeding device includes a shaft feeding mechanism, a shaft transfer mechanism arranged at the discharge end of the shaft feeding mechanism, and a flipping feeding mechanism arranged corresponding to the shaft transfer mechanism. The shaft feeding mechanism is used to supply the shaft to the shaft transfer mechanism, the shaft transfer mechanism is used to transfer the shaft to the flipping feeding mechanism, and the flipping feeding mechanism is used to flip the shaft 180° and then load it onto the carrier.

[0009] Furthermore, the shaft rod transfer mechanism includes a transfer frame installed on the machine, a shaft rod seat movably arranged at the discharge end of the shaft rod feeding mechanism, a shaft rod driver installed on the transfer frame and used for driving the shaft rod seat to approach or move away from the flip feeding mechanism, a material supporting block movably arranged at the discharge end of the shaft rod feeding mechanism and arranged opposite to the shaft rod seat, and a material supporting driver installed on the transfer frame and used for driving the material supporting block to approach or move away from the shaft rod seat, the shaft rod seat is provided with an open shaft rod groove for connecting with the discharge end of the shaft rod feeding mechanism, and the material supporting block can extend into the open shaft rod groove.

[0010] Furthermore, the sleeve assembly device includes a sleeve vibration plate mounted on the machine, a sleeve frame mounted on the machine, a seat body mounted on the sleeve frame, a support seat mounted on one end of the seat body away from the sleeve frame, a downward pressure sleeve driver mounted on the support seat, a downward pressure rod mounted on the driving end of the downward pressure sleeve driver, a sleeve connecting driver mounted on the sleeve frame and a sleeve connecting block mounted on the driving end of the sleeve connecting driver, a slide groove is horizontally opened in the middle of the seat body, the sleeve connecting block is slidably arranged in the slide groove, and the sleeve connecting block A connecting sleeve hole is opened, and a feed hole connected to the slide groove is recessed on the top surface of one end of the seat body, and a notch connected to the slide groove is recessed on the other end of the seat body. The lower pressure rod is arranged corresponding to the notch, and a discharge hole is opened on the bottom wall of the end of the slide groove away from the feed hole. The connecting sleeve hole is used to connect with the feed hole or the discharge hole, and the feed hole is connected with the discharge port of the sleeve vibration plate through the material pipe. The lower pressure set driver is used to drive the lower pressure rod to rise and fall, and the connecting sleeve driver is used to drive the connecting sleeve block to move horizontally along the slide groove, and the lower pressure rod can pass through the connecting sleeve hole and the discharge hole.

[0011] Furthermore, the sleeve assembly device also includes a first shaft support rod mechanism installed on the sleeve assembly frame and located below the seat body, and a first shaft rod sensor arranged on the main body of the first shaft support rod mechanism, and the first shaft rod sensor is electrically connected to the downward sleeve pressing driver.

[0012] Furthermore, the flattening device includes a flattening frame, a flattening lifting seat connected to the flattening frame by lifting and sliding, a flattening lifting driving mechanism installed on the flattening frame and used to drive the flattening lifting seat to lift and lower, a flattening lifting block connected to the flattening lifting seat by lifting and sliding, a flattening lifting driver installed on the flattening lifting seat and used to drive the flattening lifting block to lift and lower, a flattening assembly arranged below the flattening lifting block, and a second supporting shaft mechanism installed at the bottom of the flattening lifting seat and located below the flattening assembly. The flattening assembly includes a fixed seat, an elastic puller, an elastic member, two symmetrically arranged swing arms, and two symmetrically arranged swing arms. A slider and two symmetrically arranged pressing knives, two driving inclined surfaces are symmetrically arranged on both sides of the bottom of the flattening lifting block, rotating chambers are arranged on both sides of the fixed seat, the two rotating chambers are respectively arranged corresponding to the two swing arms, the middle part of the swing arm is rotatably connected to the two opposite side walls of the rotating chamber, the middle and upper parts of the two swing arms are elastically connected via elastic pullers, the top ends of the two swing arms respectively contact with the two driving inclined surfaces, the two sliders are horizontally slidably connected to the bottom of the fixed seat, the two sliders are located between the bottom ends of the two swing arms, the bottom ends of the two swing arms are used to contact with the two sliders respectively, the two pressing knives are respectively installed on the two sliders, and the elastic member is clamped between the two sliders.

[0013] Furthermore, the spinning assembly joint device includes a joint supply mechanism installed on the machine, a joint seat installed at the discharge end of the joint supply mechanism, a lifting mechanism installed on the machine and used to lift the joint supported by the joint seat, a third supporting shaft mechanism arranged on one side of the joint seat and located on the circumferential side of the turntable, a loading and unloading robot installed on the machine, and a picking up spinning assembly mechanism arranged at the output end of the loading and unloading robot, and the picking up spinning assembly mechanism is movably arranged above the joint seat and the carrier.

[0014] Furthermore, the picking and spinning assembly mechanism includes a downward pressure drive installed at the output end of the loading and unloading robot and a rotating jaw cylinder installed at the downward pressure end of the downward pressure drive. The rotating part of the rotating jaw cylinder is equipped with a fixed ring, and the fixed ring is provided with a pressure block. The pressure block is located in the space formed by the two jaws of the rotating jaw cylinder.

[0015] Furthermore, the fixed-length assembly joint device includes a fixed-length assembly frame installed on the machine, a support plate arranged in the middle of the fixed-length assembly frame, a fixed-length assembly bottom mold installed on the support plate, a unloading track installed on the fixed-length assembly frame or the machine and located on one side of the support plate, a fixed-length assembly driver installed on the top of the fixed-length assembly frame, a fixed-length assembly pressure head installed on the driving end of the fixed-length assembly driver and corresponding to the fixed-length assembly bottom mold, a unloading driver installed on the support plate, a clamping driver installed on the driving end of the unloading driver, and two clamping blocks respectively installed on the two clamping ends of the clamping driver, the clamping driver is used to drive the two clamping blocks to move closer to or away from each other, the unloading driver is used to drive the clamping driver to reciprocate with the two clamping blocks between the fixed-length assembly bottom mold and above the unloading track, an open avoidance groove is opened in the middle of the two clamping blocks, the open avoidance groove is used for the feeding end of the fixed-length assembly feeding device to move in or out, and the fixed-length assembly driver is used to drive the fixed-length assembly pressure head to move closer to or away from the fixed-length assembly bottom mold.

[0016] Furthermore, the electric toothbrush shaft core assembly machine also includes a second shaft sensor installed on the machine and located between the shaft feeding device and the sleeve installation device, a sleeve sensor installed on the machine and located between the sleeve installation device and the flattening device, and a fourth shaft support mechanism installed on the machine and located between the spinning assembly joint device and the fixed-length assembly joint device. The main body of the fourth shaft support mechanism is equipped with a joint sensor, and the second shaft sensor, the sleeve sensor and the fourth shaft support mechanism are all distributed on the circumferential side of the turntable.

[0017] The present invention also provides an electric toothbrush shaft core assembly method, based on the application of the above-mentioned electric toothbrush shaft core assembly machine, comprising the following method:

[0018] The rotating drive mechanism drives the turntable to rotate intermittently with multiple carriers, so that each carrier rotates to the bottom of the shaft feeding device, the sleeve installation device, the flattening device, the spin assembly joint device and the fixed-length assembly joint device in turn. The shaft feeding device loads the shaft onto the carrier, the sleeve installation device installs the sleeve on the shaft carried by the carrier, the flattening device presses and forms a flat position on the top of the shaft with the sleeve installed, the spin assembly joint device spins and assembles the joint at the flat position of the shaft, and the fixed-length assembly joint device assembles the joint spin-assembled at the flat position of the shaft on the shaft at a fixed length, so that the joint can be accurately assembled at the target position of the shaft at a fixed length, ensuring that the position of the joint assembled on the shaft is consistent, so as to complete the assembly of the electric toothbrush shaft core.

[0019] The beneficial effects of the present invention are as follows: in practical applications, the rotating drive mechanism drives the turntable to rotate intermittently with multiple carriers, so that each carrier rotates to the bottom of the shaft feeding device, the sleeve installation device, the flattening device, the spinning assembly joint device and the fixed-length assembly joint device in sequence, the shaft feeding device loads the shaft onto the carrier, the sleeve installation device installs the sleeve on the shaft carried by the carrier, the flattening device presses and forms a flat position at the top of the shaft with the sleeve installed, the spinning assembly joint device spins and assembles the joint at the flat position of the shaft, and the fixed-length assembly joint device assembles the joint spin-assembled at the flat position of the shaft on the shaft at a fixed length, so that the joint can be accurately assembled at the appropriate position of the shaft, ensuring that the position of the joint assembled on the shaft is consistent, thereby ensuring the quality and consistency of the electric toothbrush shaft core after assembly. The present invention can automatically realize the feeding of the shaft, the installation of the sleeve, the flattening of the shaft, the spinning assembly of the joint and the fixed-length assembly of the joint, thereby improving the efficiency and quality of the production of the electric toothbrush shaft core. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the shaft feeding device of the present invention.

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the sleeve assembly device of the present invention after the sleeve vibration plate is hidden.

[0023] Figure 4 This is a cross-sectional view of the sleeve assembly device of the present invention after the sleeve vibration plate is hidden.

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the first supporting shaft mechanism and the first shaft sensor of the present invention.

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the flattening device of the present invention.

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the flattening device of the present invention from another viewing angle.

[0027] Figure 8 It is a schematic diagram of the three-dimensional structure of the spinning assembly joint device of the present invention.

[0028] Fig. 9 It is a three-dimensional structural schematic diagram of the pick-up spinning assembly mechanism of the present invention.

[0029] Fig.10 It is a schematic diagram of the three-dimensional structure of the fixed-length assembly joint device of the present invention.

[0030] Description of reference numerals:

[0031] 1. Machine; 2. Turntable; 3. Carrier; 4. Shaft feeding device; 5. Shaft sleeve device; 6. Flattening device; 7. Spinning assembly joint device; 8. Fixed-length assembly joint device; 9. Fixed-length assembly feeding device; 10. Shaft feeding mechanism; 11. Shaft transfer mechanism; 12. Flip feeding mechanism; 13. Shaft vibration plate; 14. Shaft track; 15. Shaft linear vibration feeder; 16. Transfer rack; 17. Shaft connecting seat; 18. Shaft connecting driver; 19. Material support block; 20. Material support driver; 21. Open shaft connecting slot; 22. Flip feeding rack; 23. Flip feeding translation driver; 24. Flip feeding lifting driver; 25. Flip driver; 26. Clamping shaft rod driver; 27. Clamping shaft rod block; 28. Shaft sleeve vibration plate; 29. ​​Set shaft sleeve frame; 30. Base; 31. Support seat; 32. Press down set driver; 33. Press down rod; 34. Connecting shaft sleeve driver; 35. Connecting shaft sleeve block; 36. Slide; 37. Connecting shaft sleeve hole; 38. Feed hole; 39. Notch; 40. Discharge hole; 41. Material pipe; 42. Center hole; 43. First supporting shaft rod mechanism; 44. First shaft rod sensor; 45. Clamping driver; 46. Clamping piece; 47. Clamping slot; 48. Accommodating slot; 4 9. Flattening frame; 50. Flattening lifting seat; 51. Flattening lifting drive mechanism; 52. Flattening lifting block; 53. Flattening lifting driver; 54. Flattening assembly; 55. Second supporting shaft mechanism; 56. Fixed seat; 57. Elastic puller; 58. Elastic member; 59. Swing arm; 60. Pressing knife; 61. Driving inclined plane; 62. Rotating chamber; 63. Rotating block; 64. Joint supply mechanism; 65. Joint seat; 66. Lifting mechanism; 67. Third supporting shaft mechanism; 68. Loading and unloading manipulator; 69. Picking and spinning assembly mechanism; 70. Pressing driver; 71. Rotating jaw cylinder; 72 , fixing ring; 73, pressure block; 74, supply joint vibration plate; 75, joint track; 76, joint linear vibration feeder; 77, joint slot; 78, fixed-length assembly frame; 79, support plate; 80, fixed-length assembly bottom mold; 81, unloading track; 82, fixed-length assembly driver; 83, fixed-length assembly pressure head; 84, unloading driver; 85, clamping driver; 86, clamping block; 87, opening avoidance groove; 88, support joint groove; 89, support shaft rod groove; 90, step; 91, second shaft rod sensor; 92, sleeve sensor; 93, fourth support shaft rod mechanism; 94, joint sensor; 95, slider. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0033] like Figures 1 to 10As shown, the present invention provides an electric toothbrush shaft core assembly machine, which includes a machine platform 1, a rotating drive mechanism installed on the machine platform 1, a turntable 2 installed on the rotating end of the rotating drive mechanism, a plurality of carriers 3 installed on the turntable 2 in a circular array, and a shaft feeding device 4, a sleeve installation device 5, a flattening device 6, a spinning assembly joint device 7 and a fixed-length assembly joint device 8 respectively installed on the machine platform 1 and distributed in sequence on the circumference of the turntable 2. The machine platform 1 is equipped with a fixed-length assembly feeding device 9, the shaft feeding device 4 is used to feed the shaft onto the carrier 3, the sleeve installation device 5 is used to install the sleeve on the shaft, the flattening device 6 is used to press and form a flat position at the top end of the shaft, the spinning assembly joint device 7 is used to spin and assemble the joint at the flat position of the shaft, the fixed-length assembly joint device 8 is used to assemble the joint on the shaft in a fixed length, and the fixed-length assembly feeding device 9 is used to transfer the shaft with the joint assembled and carried by the carrier 3 to the fixed-length assembly joint device 8.

[0034] In actual application, the rotating drive mechanism drives the turntable 2 to rotate intermittently with multiple carriers 3, so that each carrier 3 rotates to the bottom of the shaft feeding device 4, the sleeve installation device 5, the flattening device 6, the spin assembly joint device 7 and the fixed-length assembly joint device 8 in turn. The shaft feeding device 4 loads the shaft onto the carrier 3, the sleeve installation device 5 installs the sleeve on the shaft carried by the carrier 3, the flattening device 6 presses and forms a flat position on the top of the shaft with the sleeve, the spin assembly joint device 7 spins and assembles the joint at the flat position of the shaft, and the fixed-length assembly joint device 8 assembles the joint spin-assembled at the flat position of the shaft on the shaft at a fixed length, so that the joint can be accurately assembled at the appropriate position of the shaft, ensuring that the position of the joint assembled on the shaft is consistent, thereby ensuring the quality and consistency of the electric toothbrush shaft core after assembly. The present invention can automatically realize the feeding of the shaft rod, the fitting of the shaft sleeve, the flattening of the shaft rod, the spinning assembly of the joint and the fixed-length assembly of the joint, thereby improving the efficiency and quality of producing the shaft core of the electric toothbrush.

[0035] In this embodiment, the shaft feeding device 4 includes a shaft feeding mechanism 10, a shaft transfer mechanism 11 arranged at the discharge end of the shaft feeding mechanism 10, and a flip loading mechanism 12 arranged corresponding to the shaft transfer mechanism 11. The shaft feeding mechanism 10 is used to supply the shaft to the shaft transfer mechanism 11, the shaft transfer mechanism 11 is used to transfer the shaft to the flip loading mechanism 12, and the flip loading mechanism 12 is used to flip the shaft 180° and then load it onto the carrier 3. The flip loading end of the flip loading mechanism 12 is located below the transfer end of the shaft transfer mechanism 11.

[0036] In actual application, the shaft feeding mechanism 10 supplies the shaft to the transfer end of the shaft transfer mechanism 11, and the transfer end of the shaft transfer mechanism 11 transfers the shaft to the flip loading end of the flip loading mechanism 12. At this time, the head of the shaft faces upward and the shaft portion faces downward. While the flip loading mechanism 12 flips the shaft by 180°, the flip loading mechanism 12 places the flipped shaft on the corresponding carrier 3, so that the head of the shaft is placed downward in the loading hole of the carrier 3, and the shaft portion faces upward and extends out of the loading hole of the carrier 3. Since the head of the shaft is heavier, when the shaft feeding mechanism 10 supplies the shaft, the head of the shaft faces upward under the action of the gravity of the shaft. Therefore, before the shaft is loaded onto the carrier 3, the shaft needs to be flipped 180° so that the head of the shaft faces downward.

[0037] Specifically, the shaft feeding mechanism 10 includes a shaft vibration plate 13 installed on the machine 1, a shaft track 14 connected to the discharge end of the shaft vibration plate 13, and a shaft linear vibration feeder 15 installed on the machine 1 and in contact with the bottom surface of the shaft track 14. In actual application, the shaft vibration plate 13 transports the shafts to the shaft track 14 in an orderly manner. Under the action of the shaft linear vibration feeder 15 and the gravity of the shafts, the heads of the shafts face upward and move along the shaft track 14, so that the shafts are supplied to the shaft transfer mechanism 11 one by one.

[0038] In this embodiment, the shaft transfer mechanism 11 includes a transfer frame 16 installed on the machine 1, a shaft connecting rod seat 17 movably arranged at the discharge end of the shaft feeding mechanism 10, a shaft connecting rod driver 18 installed on the transfer frame 16 and used to drive the shaft connecting rod seat 17 to approach or move away from the flip feeding mechanism 12, a material supporting block 19 movably arranged at the discharge end of the shaft feeding mechanism 10 and arranged opposite to the shaft connecting rod seat 17, and a material supporting driver 20 installed on the transfer frame 16 and used to drive the material supporting block 19 to approach or move away from the shaft connecting rod seat 17. The shaft connecting rod seat 17 is provided with an open shaft connecting rod groove 21 for connecting with the discharge end of the shaft feeding mechanism 10, and the material supporting block 19 can extend into the open shaft connecting rod groove 21.

[0039] The material supporting block 19 then moves toward the turning feeding mechanism 12, and the turning feeding end of the turning feeding mechanism 12 picks up the shaft rod, thereby realizing the transfer of the shaft rod.

[0040] Specifically, the flip loading mechanism 12 includes a flip loading frame 22 mounted on the machine 1, a flip loading translation driver 23 mounted on the flip loading frame 22, a flip loading lifting driver 24 mounted on the output end of the flip loading translation driver 23, a flip driver 25 mounted on the lifting end of the flip loading lifting driver 24, a clamping shaft rod driver 26 mounted on the flip end of the flip driver 25, and two clamping shaft rod blocks 27 respectively mounted on the two clamping ends of the clamping shaft rod driver 26, the flip driver 25 is used to drive the clamping shaft rod driver 26 to rotate 180° with the two clamping shaft rod blocks 27, and the clamping shaft rod driver 26 is used to drive the two clamping shaft rod blocks 27 to move closer to or away from each other. Preferably, the flip driver 25 and the clamping shaft rod driver 26 can be replaced by a rotary clamping claw cylinder 71.

[0041] In actual application, the shaft transfer mechanism 11 moves the shaft to between the two clamping shaft rod blocks 27, and the clamping shaft rod driver 26 drives the two clamping shaft rod blocks 27 to approach each other to clamp the shaft, and then the flipping and loading translation driver 23 drives the flipping and loading lifting driver 24 to move the flipping driver 25, the clamping shaft rod driver 26, the two clamping shaft rod blocks 27 and the shaft to the top of the corresponding carrier 3. At the same time, the flipping driver 25 drives the clamping shaft rod driver 26 to rotate the two clamping shaft rod blocks 27 and the shaft 180° so that the head of the shaft faces downward, and then the flipping and loading lifting driver 24 drives the flipping driver 25 to move the clamping shaft rod driver 26, the two clamping shaft rod blocks 27 and the shaft downward until the shaft is placed on the carrier 3 to achieve flipping and loading of the shaft.

[0042] In this embodiment, the sleeve assembly device 5 includes a sleeve vibration plate 28 mounted on the machine 1, a sleeve assembly frame 29 mounted on the machine 1, a seat body 30 mounted on the sleeve assembly frame 29, a support seat 31 mounted on one end of the seat body 30 away from the sleeve assembly frame 29, a downward pressing sleeve driver 32 mounted on the support seat 31, a downward pressing rod 33 mounted on the driving end of the downward pressing sleeve driver 32, a sleeve connecting driver 34 mounted on the sleeve assembly frame 29, and a sleeve connecting block 35 mounted on the driving end of the sleeve connecting driver 34. A slide groove 36 is horizontally opened in the middle of the seat body 30, and the sleeve connecting block 35 is slidably set in the slide groove 36. The sleeve connecting block 35 has a connecting groove 36. The shaft sleeve hole 37, the top surface of one end of the seat body 30 is recessed with a feed hole 38 connected to the slide groove 36, and the other end of the seat body 30 is recessed with a notch 39 connected to the slide groove 36. The lower pressure rod 33 is arranged corresponding to the notch 39. The bottom wall of the slide groove 36 at one end away from the feed hole 38 is provided with a discharge hole 40. The shaft sleeve hole 37 is used to connect with the feed hole 38 or the discharge hole 40. The feed hole 38 is connected with the discharge port of the shaft sleeve vibration disk 28 via the material pipe 41. The lower pressure set driver 32 is used to drive the lower pressure rod 33 to rise and fall, and the shaft sleeve driver 34 is used to drive the shaft sleeve block 35 to move horizontally along the slide groove 36. The lower pressure rod 33 can pass through the shaft sleeve hole 37 and the discharge hole 40.

[0043] In actual application, the carrier 3 rotates to the bottom of the sleeve assembly 5, the shaft rod on the carrier 3 is coaxial with the discharge hole 40, the sleeve vibration plate 28 transports the sleeves to the material pipe 41 in an orderly manner, and the sleeves in the material pipe 41 enter the feed hole 38 one by one. At this time, the sleeve hole 37 of the sleeve block 35 is connected with the feed hole 38, and the sleeve in the feed hole 38 falls into the sleeve hole 37, and then the sleeve driver 34 drives the sleeve block 35 to move along the slide groove 36 together with the sleeve until the sleeve hole 37 of the sleeve block 35 is connected with the discharge hole 40, and the lower pressure rod 33 is coaxial with the sleeve hole 37, and then the lower pressure assembly driver 32 drives the lower pressure rod 33 to move downward, and the lower pressure rod 33 that moves downward is inserted into the sleeve hole 37 and the discharge hole 40 and presses the sleeve down to assemble it on the rod portion of the shaft rod, so that the sleeve is sleeved outside the rod portion of the shaft rod.

[0044] Specifically, the lower pressure rod 33 is axially provided with a center hole 42, into which the rod portion of the shaft can be inserted; when the lower pressure rod 33 presses the sleeve down and assembles it on the rod portion of the shaft, as the lower pressure rod 33 moves downward, the stem of the shaft is inserted into the center hole 42 of the lower pressure rod 33, so that the lower pressure rod 33 can assemble the sleeve into place.

[0045] In this embodiment, the sleeve assembly 5 further includes a first shaft support mechanism 43 mounted on the sleeve assembly frame 29 and located below the seat body 30 and a first shaft sensor 44 disposed on the main body of the first shaft support mechanism 43 . The first shaft sensor 44 is electrically connected to the downward pressing sleeve driver 32 .

[0046] When the carrier 3 rotates to the bottom of the sleeve assembly 5, the first shaft rod supporting mechanism 43 clamps and supports the shaft rod carried by the carrier 3, ensuring the position accuracy and stability of the shaft rod. After the first shaft rod supporting mechanism 43 straightens the shaft rod, when the first shaft rod sensor 44 senses the shaft rod, the first shaft rod sensor 44 feeds back information to the downward pressing assembly driver 32, so that the downward pressing assembly driver 32 drives the downward pressing rod 33 to move downward, so as to press the sleeve down and assemble it on the shaft rod through the downward pressing rod 33. This structural design ensures that the shaft rod is straightened before the sleeve is assembled, which improves the assembly quality of the shaft rod and the sleeve, and greatly improves the assembly yield.

[0047] Specifically, the first supporting shaft mechanism 43 includes a clamping driver 45 installed on the sleeve frame 29 and two clamping members 46 respectively installed on the two output ends of the clamping driver 45. The clamping driver 45 is used to drive the two clamping members 46 to approach or move away from each other. A clamping groove 47 is recessed on the side where the clamping ends of the two clamping members 46 are close to each other; the thickness of the clamping end of one clamping member 46 is greater than the thickness of the clamping end of the other clamping member 46, and a receiving groove 48 is recessed in the middle of the clamping end of the thick clamping member 46. The receiving groove 48 is used for the clamping end of the thin clamping member 46 to extend into, and the receiving groove 48 is recessed from the side wall of the clamping groove 47 of the clamping end of the thick clamping member 46 to divide the clamping groove 47 into two.

[0048] In actual application, when the rod portion of the shaft rod carried by the carrier 3 is located between the two clamping members 46, the clamping driver 45 drives the two clamping members 46 to approach each other, so that the two clamping members 46 clamp the rod portion of the shaft rod, and the rod portion of the shaft rod is clamped in the clamping grooves 47 of the two clamping members 46; when the clamping ends of the two clamping members 46 clamp the rod portion of the shaft rod, the clamping end of one clamping member 46 extends into the accommodating groove 48 of the clamping end of the other clamping member 46, so that the clamping grooves 47 of the two clamping members 46 clamp the rod portion of the shaft rod. At this time, since the clamping groove 47 of the thick clamping member 46 is divided into two, the two clamping members 46 form a three-point positioning clamping method when clamping the rod portion of the shaft rod, which improves the stability of the clamped rod portion of the shaft rod and can correct the deviation of the shaft rod.

[0049] In this embodiment, the flattening position device 6 includes a flattening position frame 49, a flattening position lifting seat 50 that is lifted and slidably connected to the flattening position frame 49, a flattening position lifting driving mechanism 51 installed on the flattening position frame 49 and used to drive the flattening position lifting seat 50 to rise and fall, a flattening position lifting block 52 that is lifted and slidably connected to the flattening position lifting seat 50, a flattening position lifting driver 53 installed on the flattening position lifting seat 50 and used to drive the flattening position lifting block 52 to rise and fall, a flattening position component 54 arranged below the flattening position lifting block 52, and a second supporting shaft mechanism 55 installed at the bottom of the flattening position lifting seat 50 and located below the flattening position component 54. The flattening position component 54 includes a fixed seat 56, an elastic puller 57, an elastic member 58, two symmetrically arranged swing arms 59, and two symmetrically arranged slides. Block 95 and two symmetrically arranged pressing knives 60, two driving inclined surfaces 61 are symmetrically arranged on both sides of the bottom of the flattening position lifting block 52, and rotating chambers 62 are arranged on both sides of the fixed seat 56. The two rotating chambers 62 are respectively arranged in a one-to-one correspondence with the two swing arms 59. The middle part of the swing arm 59 is rotatably connected to the two opposite side walls of the rotating chamber 62. The middle and upper parts of the two swing arms 59 are elastically connected via elastic pullers 57. The top ends of the two swing arms 59 respectively contact with the two driving inclined surfaces 61. The two sliders 95 are horizontally slidably connected to the bottom of the fixed seat 56. The two sliders 95 are located between the bottom ends of the two swing arms 59. The bottom ends of the two swing arms 59 are used to contact with the two sliders 95 respectively. The two pressing knives 60 are respectively installed on the two sliders 95, and the elastic member 58 is clamped between the two sliders 95.

[0050] In actual application, at the beginning, the elastic member 58 is in an extended state, and the elastic member 58 applies an elastic force to the two sliders 95 to move away from each other, so that the sliders 95 always contact the bottom ends of the swing arms 59, and the elastic puller 57 applies an elastic force to the middle and upper parts of the two swing arms 59 to move closer to each other, so that the top ends of the swing arms 59 always contact the driving inclined plane 61, and the bottom ends of the two swing arms 59 are in an open state; when the shaft rod carried by the carrier 3 is below the flattening position device 6, the flattening position lifting drive mechanism 51 drives the flattening position lifting seat 50 The flattening position assembly 54 is lowered together with the flattening position assembly 54 until the top of the shaft is located between the bottom ends of the two swing arms 59 of the flattening position assembly 54, that is, the top of the shaft is located between the two pressing knives 60. At the same time, the second shaft supporting mechanism 55 supports the middle position of the shaft to ensure the stability and position accuracy of the shaft. Then the flattening position lifting driver 53 drives the flattening position lifting block 52 to descend. The two driving inclined surfaces 61 of the descending flattening position lifting block 52 respectively contact the top ends of the two swing arms 59. As the flattening position lifting block 52 is lowered, the flattening position lifting block 52 is lowered. As the two driving inclined surfaces 61 are arranged in an inverted eight-shaped pattern, the distance between the two driving inclined surfaces 61 gradually increases, so as to drive the top ends of the two swing arms 59 to move away from each other, thereby causing the two swing arms 59 to swing, and the bottom ends of the two swing arms 59 to approach each other and contact the two sliders 95 to move closer to each other, thereby causing the two pressing knives 60 to approach each other, and the two pressing knives 60 approaching each other apply pressure to the top end of the rod portion of the shaft rod to squeeze and form a flat position at the top end of the rod portion of the shaft rod, and finally the flattening position lifting driver 53 drives The dynamic flattening position lifting block 52 rises and resets. As the flattening position lifting block 52 rises, the elastic force of the elastic puller 57 drives the top ends of the two swing arms 59 to approach each other and reset, and the elastic force of the elastic member 58 drives the two sliders 95 to move away from each other and reset, so that the two pressing knives 60 release the shaft rod, and the second shaft supporting mechanism 55 releases the shaft rod. Then the flattening position lifting drive mechanism 51 drives the flattening position lifting seat 50, the flattening position lifting block 52 and the flattening position assembly 54 to rise and reset as a whole, so as to facilitate the flattening of the next shaft rod. The flattening position device 6 can stably and reliably process and form flattening positions on both sides of the top end of the shaft rod, and the flattening position forming efficiency is high.

[0051] Specifically, the top end of the swing arm 59 is rotatably connected with a rotating block 63, and the rotating block 63 rolls against the driving inclined surface 61. The rotating block 63 can be a rotating wheel, a rotating ball or a bearing. During the lifting and lowering process of the flattening position lifting block 52, the rotating block 63 rolls against the driving inclined surface 61, thereby reducing friction resistance and wear, and extending the service life of the flattening position lifting block 52 and the swing arm 59.

[0052] Specifically, the bottom surface of the fixed seat 56 is concavely provided with a sliding cavity upward, and the two sliders 95 are slidably arranged in the sliding cavity, so that the structure of the fixed seat 56 and the slider 95 is compact, the rotating cavity 62 is connected with the sliding cavity, the bottom end of the swing arm 59 can extend into the sliding cavity, and the two opposite side walls of the sliding cavity are horizontally provided with guide rods, and the two sliders 95 slide through the guide rods. In the process of the sliders 95 approaching or moving away from each other, the guide rods play a guiding role for the sliders 95, thereby improving the moving stability of the sliders 95.

[0053] Specifically, the elastic puller 57 can be a tension spring, and the elastic member 58 can be a spring. The spring is sleeved outside the guide rod, and the guide rod guides and positions the spring, thereby improving the working stability of the spring and facilitating the disassembly and assembly of the spring.

[0054] In this embodiment, the spinning assembly joint device 7 includes a joint supply mechanism 64 installed on the machine 1, a joint seat 65 installed at the discharge end of the joint supply mechanism 64, a lifting mechanism 66 installed on the machine 1 and used to lift the joint supported by the joint seat 65, a third supporting shaft mechanism 67 arranged on one side of the joint seat 65 and located on the circumferential side of the turntable 2, a loading and unloading robot 68 installed on the machine 1, and a picking up spinning assembly mechanism 69 arranged at the output end of the loading and unloading robot 68, and the picking up spinning assembly mechanism 69 is movably arranged above the joint seat 65 and the carrier 3.

[0055] In actual application, when the shaft rod carried by the carrier 3 rotates to the spinning assembly joint device 7, the third shaft rod supporting mechanism 67 supports the rod portion of the shaft rod carried by the carrier 3. At the same time, the joint supply mechanism 64 supplies the joint to the joint seat 65, and the lifting mechanism 66 lifts the joint on the joint seat 65. The loading and unloading robot 68 drives the picking and spinning assembly mechanism 69 to move to the top of the joint seat 65 and pick up the joint, and then drives the picking and spinning assembly mechanism 69 to move with the joint to the top of the rod portion of the shaft rod. The picking and spinning assembly mechanism 69 spins and assembles the joint on the flat position at the top of the rod portion of the shaft rod to realize the automated spinning assembly of the joint.

[0056] In this embodiment, the picking and spinning assembly mechanism 69 includes a downward pressing driver 70 installed at the output end of the loading and unloading robot 68 and a rotating jaw cylinder 71 installed at the downward pressing end of the downward pressing driver 70. The rotating part of the rotating jaw cylinder 71 is equipped with a fixed ring 72, and the fixed ring 72 is provided with a pressure block 73. The pressure block 73 is located in the space formed by the two jaws of the rotating jaw cylinder 71.

[0057] In actual application, the loading and unloading robot 68 drives the picking and spinning assembly mechanism 69 to move above the joint seat 65 first. At this time, the top surface of the joint is in conflict with the pressure block 73, and the joint is located between the two jaws of the rotating jaw cylinder 71. Then the two jaws of the rotating jaw cylinder 71 gather together and clamp the joint. Then the loading and unloading robot 68 drives the picking and spinning assembly mechanism 69 to move the joint above the top of the rod portion of the shaft. The downward pressure driver 70 drives the rotating jaw cylinder 71 to move the joint downward. At the same time, the rotating jaw end of the rotating jaw cylinder 71 drives the fixing ring 72 and the two jaws to rotate synchronously to spin-press the joint on the flat position at the top of the rod portion of the shaft. The joint can be assembled smoothly and stably by spinning assembly, and the joint is easier to assemble.

[0058] Specifically, the joint supply mechanism 64 includes a joint supply vibration plate 74 installed on the machine 1, a joint rail 75 connected to the discharge port of the joint supply vibration plate 74, and a joint linear vibration feeder 76 installed on the machine 1 and in contact with the bottom surface of the joint rail 75; the joint seat 65 is provided with a joint groove 77 connected to the discharge port of the joint rail 75, and the lifting mechanism 66 includes a lifting cylinder installed on the machine 1 and a lifting rod of a piston rod installed on the lifting cylinder, the lifting rod is arranged corresponding to the joint groove 77, the lifting rod is located below the joint groove 77, and the lifting cylinder can drive the lifting rod to extend into the joint groove 77.

[0059] In actual application, the joint supply vibration plate 74 transports the joints to the joint track 75 in an orderly manner. Under the action of the joint linear vibration feeder 76, the joints move along the joint track 75, and the joints in the joint track 75 move one by one into the joint slot 77. When there are joints in the joint slot 77, the lifting cylinder drives the lifting rod to rise, and the rising lifting rod lifts the joint to facilitate picking up the joint by the spinning assembly mechanism 69.

[0060] In this embodiment, the fixed-length assembly joint device 8 includes a fixed-length assembly frame 78 installed on the machine 1, a support plate 79 arranged in the middle of the fixed-length assembly frame 78, a fixed-length assembly bottom mold 80 installed on the support plate 79, a discharge track 81 installed on the fixed-length assembly frame 78 or the machine 1 and located on one side of the support plate 79, a fixed-length assembly driver 82 installed on the top of the fixed-length assembly frame 78, a fixed-length assembly pressure head 83 installed at the driving end of the fixed-length assembly driver 82 and corresponding to the fixed-length assembly bottom mold 80, a discharge driver 84 installed on the support plate 79, and a discharge driver 84 installed at the driving end of the discharge driver 84. The clamping driver 85 and two clamping blocks 86 are respectively installed at the two clamping ends of the clamping driver 85. The clamping driver 85 is used to drive the two clamping blocks 86 to move closer to or away from each other. The unloading driver 84 is used to drive the clamping driver 85 and the two clamping blocks 86 to reciprocate between the fixed-length assembly bottom mold 80 and the top of the unloading track 81. An open avoidance groove 87 is opened in the middle of the two clamping blocks 86. The open avoidance groove 87 is used for the loading end of the fixed-length assembly loading device 9 to move in or out. The fixed-length assembly driver 82 is used to drive the fixed-length assembly pressure head 83 to move closer to or away from the fixed-length assembly bottom mold 80.

[0061] In actual application, when the spin-formed shaft rod with a joint carried by the carrier 3 rotates to the fixed-length assembly joint device 8, the fixed-length assembly loading device 9 picks up the middle position of the shaft rod with a joint, and the loading end of the fixed-length assembly loading device 9 moves into the open avoidance groove 87, and moves the spin-formed shaft rod with a joint between the two clamping blocks 86, and the fixed-length assembly bottom mold 80 is located under the head of the shaft rod and contacts the head of the shaft rod, and then the clamping driver 85 drives the two clamping blocks 86 to approach each other, so that the two clamping blocks 86 clamp and support the shaft rod, and then the fixed-length assembly driver 82 drives the fixed-length assembly pressure head 83 It descends a preset distance so that the fixed-length assembly pressure head 83 presses the joint down and assembles it at a preset position on the rod of the shaft to ensure the position accuracy and stability of the joint assembly on the shaft. After the joint is assembled to a fixed length, the electric toothbrush shaft core is assembled and formed. The loading end of the fixed-length assembly loading device 9 moves out of the open avoidance groove 87, and the unloading driver 84 drives the clamping driver 85 to move the electric toothbrush shaft core horizontally to the bottom of the unloading track 81. Finally, the clamping driver 45 drives the two clamping blocks 86 away from each other to loosen the electric toothbrush shaft core, so that the electric toothbrush shaft core falls onto the unloading track 81 to realize the unloading and output of the electric toothbrush shaft core.

[0062] Specifically, the clamping block 86 is provided with a supporting joint groove 88 and a supporting shaft rod groove 89 in sequence from top to bottom. The supporting joint groove 88 and the supporting shaft rod groove 89 are coaxially arranged and are respectively located at the upper and lower sides of the opening avoidance groove 87.

[0063] In actual application, when the two clamping blocks 86 clamp the supporting shaft rod, the middle position of the shaft rod is clamped in the supporting shaft rod groove 89, and the spun assembled joint is located in the supporting joint groove 88. When the fixed-length assembly pressure head 83 presses the joint down, the joint can move downward relative to the supporting joint groove 88 to be assembled into place.

[0064] Specifically, the fixed-length assembly bottom mold 80 is provided with a plurality of steps 90 in a stepped manner from top to bottom, and the number of the joint support grooves 88 and the number of the shaft support grooves 89 are both multiple, and the plurality of steps 90, the plurality of joint support grooves 88 and the plurality of shaft support grooves 89 are respectively provided in a one-to-one correspondence. According to the shafts of different length specifications, the fixed-length assembly loading device 9 picks up the shafts to the steps 90 at different positions, so that one machine can assemble and produce the shaft cores of various length specifications of electric toothbrushes.

[0065] In this embodiment, the electric toothbrush shaft core assembly machine also includes a second shaft sensor 91 installed on the machine 1 and located between the shaft feeding device 4 and the sleeve device 5, a sleeve sensor 92 installed on the machine 1 and located between the sleeve device 5 and the flattening device 6, and a fourth shaft support mechanism 93 installed on the machine 1 and located between the spinning assembly joint device 7 and the fixed-length assembly joint device 8. The main body of the fourth shaft support mechanism 93 is equipped with a joint sensor 94, and the second shaft sensor 91, the sleeve sensor 92 and the fourth shaft support mechanism 93 are all distributed on the circumferential side of the turntable 2.

[0066] In actual application, the second shaft sensor 91 senses the shaft. When the second shaft sensor 91 detects the shaft, it proves that the shaft loading device 4 successfully loads the shaft, that is, the carrier 3 carries the shaft. When the second shaft sensor 91 does not detect the shaft, it proves that the shaft loading device 4 fails to load the shaft. At this time, the second shaft sensor 91 feeds back a signal to the control system of the machine, causing the machine to alarm to remind the staff to maintain the machine.

[0067] The sleeve sensor 92 senses the sleeve on the shaft. When the sleeve sensor 92 senses the sleeve, it proves that the sleeve is assembled successfully. When the sleeve sensor 92 does not detect the sleeve, it proves that the sleeve is assembled failed. At this time, the sleeve sensor 92 feeds back a signal to the control system of the machine, causing the machine to alarm to remind the staff to maintain the machine.

[0068] When the shaft moves to the fourth shaft supporting mechanism 93, the fourth shaft supporting mechanism 93 supports the rod portion of the shaft, and the joint sensor 94 senses the joint on the shaft. When the joint sensor 94 senses the joint, it proves that the spinning assembly of the joint is successful. When the joint sensor 94 cannot detect the joint, it proves that the spinning assembly of the joint has failed. At this time, the joint sensor 94 feeds back a signal to the control system of the machine, causing the machine to alarm to remind the staff to maintain the machine.

[0069] Specifically, the structures of the second supporting shaft mechanism 55 , the third supporting shaft mechanism 67 and the fourth supporting shaft mechanism 93 are all the same as the structure of the first supporting shaft mechanism 43 .

[0070] The present invention also provides an electric toothbrush shaft core assembly method, based on the application of the above-mentioned electric toothbrush shaft core assembly machine, comprising the following method:

[0071] The rotating drive mechanism drives the turntable 2 to rotate intermittently with multiple carriers 3, so that each carrier 3 rotates to the bottom of the shaft feeding device 4, the sleeve installation device 5, the flattening device 6, the spin-pressed assembly joint device 7 and the fixed-length assembly joint device 8 in sequence. The shaft feeding device 4 loads the shaft onto the carrier 3, the sleeve installation device 5 installs the sleeve on the shaft carried by the carrier 3, the flattening device 6 presses and forms a flat position on the top of the shaft with the sleeve, the spin-pressed assembly joint device 7 spin-presses the joint at the flat position of the shaft, and the fixed-length assembly joint device 8 assembles the joint spin-assembled at the flat position of the shaft on the shaft with a fixed length, so that the joint can be accurately assembled at the target position of the shaft with a fixed length, ensuring that the position of the joint assembled on the shaft is consistent, so as to complete the assembly of the electric toothbrush shaft core.

[0072] All technical features in this embodiment can be freely combined according to actual needs.

[0073] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention may also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. An electric toothbrush shaft core assembly machine, characterized in that: The invention comprises a machine (1), a rotary drive mechanism mounted on the machine (1), a turntable (2) mounted on the rotary end of the rotary drive mechanism, a plurality of carriers (3) mounted on the turntable (2) in a circular array, and shaft rod feeding devices (4), sleeve sleeve devices (5), flattening devices (6), spinning assembly joint devices (7) and fixed-length assembly joint devices (8) respectively mounted on the machine (1) and sequentially distributed on the circumference of the turntable (2). The machine (1) is equipped with a fixed-length assembly feeding device (9), the shaft rod The loading device (4) is used to load the shaft rod onto the carrier (3); the sleeve-mounting device (5) is used to mount the sleeve onto the shaft rod; the flattening device (6) is used to press and form a flat position at the top end of the shaft rod; the spinning assembly joint device (7) is used to spin and assemble the joint at the flat position of the shaft rod; the fixed-length assembly joint device (8) is used to assemble the joint on the shaft rod in a fixed length; and the fixed-length assembly loading device (9) is used to transfer the shaft rod with the assembled joint carried by the carrier (3) to the fixed-length assembly joint device (8).

2. The electric toothbrush shaft core assembly machine according to claim 1, characterized in that: The shaft feeding device (4) comprises a shaft feeding mechanism (10), a shaft transfer mechanism (11) arranged at the discharge end of the shaft feeding mechanism (10), and a flipping feeding mechanism (12) arranged corresponding to the shaft transfer mechanism (11), wherein the shaft feeding mechanism (10) is used to supply the shaft to the shaft transfer mechanism (11), the shaft transfer mechanism (11) is used to transfer the shaft to the flipping feeding mechanism (12), and the flipping feeding mechanism (12) is used to flip the shaft 180 degrees and then feed it onto the carrier (3).

3. The electric toothbrush shaft core assembly machine according to claim 2, characterized in that: The shaft transfer mechanism (11) comprises a transfer frame (16) mounted on the machine (1), a shaft connecting rod seat (17) movably mounted at the discharge end of the shaft feeding mechanism (10), a shaft connecting rod driver (18) mounted on the transfer frame (16) and used for driving the shaft connecting rod seat (17) to approach or move away from the flip feeding mechanism (12), a material supporting block (19) movably mounted at the discharge end of the shaft feeding mechanism (10) and arranged opposite to the shaft connecting rod seat (17), and a material supporting driver (20) mounted on the transfer frame (16) and used for driving the material supporting block (19) to approach or move away from the shaft connecting rod seat (17), the shaft connecting rod seat (17) being provided with an open shaft connecting rod groove (21) for connecting with the discharge end of the shaft feeding mechanism (10), and the material supporting block (19) being able to extend into the open shaft connecting rod groove (21).

4. The electric toothbrush shaft core assembly machine according to claim 1, characterized in that: The sleeve assembly device (5) comprises a sleeve vibration plate (28) mounted on the machine (1), a sleeve assembly frame (29) mounted on the machine (1), a seat body (30) mounted on the sleeve assembly frame (29), a support seat (31) mounted on one end of the seat body (30) away from the sleeve assembly frame (29), a downward pressing sleeve driver (32) mounted on the support seat (31), a downward pressing rod (33) mounted on the driving end of the downward pressing sleeve driver (32), a sleeve connecting driver (34) mounted on the sleeve assembly frame (29), and a sleeve connecting block (35) mounted on the driving end of the sleeve connecting driver (34), a sliding groove (36) is horizontally opened in the middle of the seat body (30), the sleeve connecting block (35) is slidably arranged in the sliding groove (36), and the sleeve connecting block (35) is opened with a sleeve connecting hole (37) ), a feed hole (38) connected to the slide groove (36) is recessed on the top surface of one end of the seat body (30), a notch (39) connected to the slide groove (36) is recessed on the other end of the seat body (30), a lower pressure rod (33) is arranged corresponding to the notch (39), a discharge hole (40) is opened on the bottom wall of one end of the slide groove (36) away from the feed hole (38), a shaft sleeve hole (37) is used to connect with the feed hole (38) or the discharge hole (40), the feed hole (38) is connected to the discharge port of the shaft sleeve vibration plate (28) via a material pipe (41), a lower pressure set driver (32) is used to drive the lower pressure rod (33) to rise and fall, and the shaft sleeve driver (34) is used to drive the shaft sleeve block (35) to move horizontally along the slide groove (36), and the lower pressure rod (33) can pass through the shaft sleeve hole (37) and the discharge hole (40).

5. The electric toothbrush shaft core assembly machine according to claim 4, characterized in that: The sleeve assembly device (5) further comprises a first shaft support mechanism (43) mounted on the sleeve assembly frame (29) and located below the seat body (30), and a first shaft sensor (44) arranged on the main body of the first shaft support mechanism (43); the first shaft sensor (44) is electrically connected to the downward pressing sleeve driver (32).

6. The electric toothbrush shaft core assembly machine according to claim 1, characterized in that: The flattening position device (6) comprises a flattening position frame (49), a flattening position lifting seat (50) connected to the flattening position frame (49) in an ascending and descending sliding manner, a flattening position lifting driving mechanism (51) installed on the flattening position frame (49) and used for driving the flattening position lifting seat (50) to ascend and descend, a flattening position lifting block (52) connected to the flattening position lifting seat (50) in an ascending and descending sliding manner, a flattening position lifting driver (53) installed on the flattening position lifting seat (50) and used for driving the flattening position lifting block (52) to ascend and descend, a flattening position assembly (54) arranged below the flattening position lifting block (52), and a second supporting shaft rod mechanism (55) installed at the bottom of the flattening position lifting seat (50) and located below the flattening position assembly (54), wherein the flattening position assembly (54) comprises a fixing seat (56), an elastic puller (57), an elastic member (58), two swing arms (59) arranged symmetrically, and two slide blocks (95) arranged symmetrically. and two symmetrically arranged pressing knives (60), two driving inclined surfaces (61) are symmetrically arranged on both sides of the bottom of the flattening position lifting block (52), a rotating chamber (62) is arranged on both sides of the fixed seat (56), the two rotating chambers (62) are respectively arranged in one-to-one correspondence with the two swing arms (59), the middle part of the swing arm (59) is rotatably connected with the two opposite side walls of the rotating chamber (62), the middle and upper parts of the two swing arms (59) are elastically connected via an elastic puller (57), the top ends of the two swing arms (59) are respectively in contact with the two driving inclined surfaces (61), two sliders (95) are horizontally slidably connected to the bottom of the fixed seat (56), the two sliders (95) are located between the bottom ends of the two swing arms (59), the bottom ends of the two swing arms (59) are used to respectively contact with the two sliders (95), the two pressing knives (60) are respectively installed on the two sliders (95), and the elastic member (58) is clamped between the two sliders (95).

7. The electric toothbrush shaft core assembly machine according to claim 1, characterized in that: The spinning assembly joint device (7) comprises a joint supply mechanism (64) mounted on the machine (1), a joint seat (65) mounted on the discharge end of the joint supply mechanism (64), a lifting mechanism (66) mounted on the machine (1) and used to lift the joint supported by the joint seat (65), a third supporting shaft mechanism (67) arranged on one side of the joint seat (65) and located on the peripheral side of the turntable (2), a loading and unloading robot (68) mounted on the machine (1), and a picking up spinning assembly mechanism (69) arranged at the output end of the loading and unloading robot (68), wherein the picking up spinning assembly mechanism (69) is movably arranged above the joint seat (65) and the carrier (3).

8. The electric toothbrush shaft core assembly machine according to claim 7, characterized in that: The picking and spinning assembly mechanism (69) comprises a downward pressing driver (70) installed at the output end of the loading and unloading manipulator (68) and a rotating jaw cylinder (71) installed at the downward pressing end of the downward pressing driver (70). The rotating part of the rotating jaw cylinder (71) is equipped with a fixing ring (72). The fixing ring (72) is provided with a pressure block (73). The pressure block (73) is located in the space formed by the two jaws of the rotating jaw cylinder (71).

9. The electric toothbrush shaft core assembly machine according to claim 1, characterized in that: The fixed-length assembly joint device (8) comprises a fixed-length assembly frame (78) mounted on a machine (1), a support plate (79) arranged in the middle of the fixed-length assembly frame (78), a fixed-length assembly bottom die (80) mounted on the support plate (79), a material discharge track (81) mounted on the fixed-length assembly frame (78) or the machine (1) and located on one side of the support plate (79), a fixed-length assembly driver (82) mounted on the top of the fixed-length assembly frame (78), a fixed-length assembly pressure head (83) mounted on the driving end of the fixed-length assembly driver (82) and arranged corresponding to the fixed-length assembly bottom die (80), a material discharge driver (84) mounted on the support plate (79), and a clamping member (81) mounted on the driving end of the material discharge driver (84). A holding driver (85) and two clamping blocks (86) respectively mounted on two clamping ends of the clamping driver (85), the clamping driver (85) being used to drive the two clamping blocks (86) to move closer to or farther from each other, a material discharge driver (84) being used to drive the clamping driver (85) and the two clamping blocks (86) to move back and forth between a fixed-length assembly bottom die (80) and the top of a material discharge track (81), an open avoidance groove (87) being provided in the middle of the two clamping blocks (86), the open avoidance groove (87) being used to allow the loading end of a fixed-length assembly loading device (9) to move in or out, and a fixed-length assembly driver (82) being used to drive a fixed-length assembly pressure head (83) to move closer to or farther from the fixed-length assembly bottom die (80).

10. A method for assembling an electric toothbrush shaft core, characterized in that: Based on the application of the electric toothbrush shaft core assembly machine according to any one of claims 1 to 9, the method comprises the following steps: The rotating drive mechanism drives the turntable (2) and the plurality of carriers (3) to rotate intermittently, so that each carrier (3) rotates to the bottom of the shaft feeding device (4), the sleeve fitting device (5), the flattening device (6), the spinning assembly joint device (7) and the fixed length assembly joint device (8) in sequence. The shaft feeding device (4) feeds the shaft onto the carrier (3), the sleeve fitting device (5) fits the sleeve onto the shaft carried by the carrier (3), the flattening device (6) presses and forms a flat position at the top of the shaft with the sleeve, the spinning assembly joint device (7) spins and assembles the joint at the flat position of the shaft, and the fixed length assembly joint device (8) assembles the joint spin-assembled at the flat position of the shaft on the shaft, so that the joint can be accurately assembled at the target position of the shaft, ensuring that the position of the joint assembled on the shaft is consistent, so as to complete the assembly of the electric toothbrush shaft core.

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