Automatic cutting device for bicycle tubular shaft parts

Abstract

The invention relates to the technical field of automatic turning of bicycle lower pipes, and particularly discloses an automatic cutting device for bicycle pipe shaft parts, which is used for turning two ends of a lower pipe and conveniently welding and connecting the two ends of the lower pipe with a head pipe and a middle shaft pipe respectively, and comprises a multi-shaft mechanical arm and a mounting plate mounted at the front end of the multi-shaft mechanical arm, the device further comprises an overturning assembly and a mounting base frame, and an end turning assembly used for turning the end of the lower pipe is mounted in the mounting base frame. The turning sleeve in the turning part can be conveniently detached and replaced, so that the device can be conveniently adapted to turning treatment of the end parts of different lower pipes, and the turning sleeve can be adjusted to a proper size according to different batches of frame models and the like; the end turning assembly can conduct turning treatment on the end, matched with the head pipe, of the lower pipe in the vertical state, and can also be rapidly switched to the longitudinal flat state to conduct turning treatment on the other end, matched with the middle shaft pipe, of the lower pipe, and the turning flexibility is high.

Description

Technical Field

[0001] The invention belongs to the technical field of automatic turning of bicycle down tubes, and in particular relates to an automatic cutting device for bicycle tube and axle parts. Background Art

[0002] In 2024, China's bicycle market continued to prosper, the cycling craze continued to heat up, and consumer demand tended to be diversified and high-end. Road bikes became the most popular model, accounting for 78.75% of the total, a record high.

[0003] The development of the bicycle industry has introduced industries such as cutting and welding. A bicycle frame is generally composed of a head tube, a top tube, a down tube, a seat tube, a seat fork, a chain fork, a seat tube, etc. One end of the down tube is connected to the head tube, and the other end of the down tube is connected to the chain fork, the seat tube, etc. through the middle shaft tube. The extension lines of the axis lines of the head tube and the middle shaft tube are vertical and do not intersect. Most of the existing technologies rely on workers to use angle grinding tools to grind the two ends of the down tube to facilitate the subsequent alignment welding and assembly of the head tube and the middle shaft tube. However, manual operation is prone to irregular assembly gaps, which will affect subsequent welding operations, cannot guarantee the reliability of welding fixation, and will affect the appearance of the product. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic cutting device for bicycle tube and axle parts to solve the problem in the prior art that workers rely on angle grinding tools to grind the two ends of the lower tube, which easily leads to irregular welds and affects the welding effect.

[0005] To achieve the above object, the present invention provides the following technical solutions: The invention discloses an automatic cutting device for bicycle tube and axle parts, which is used for turning the two ends of a down tube, so that the two ends are respectively welded to a head tube and a middle tube. The device comprises a multi-axis mechanical arm and a mounting plate installed at the front end of the multi-axis mechanical arm, and also comprises a flipping assembly and a mounting base frame. The flipping assembly and the mounting base frame are respectively installed on both sides of the mounting plate. An end turning assembly for turning the end of the down tube is installed in the mounting base frame. The flipping assembly can drive the mounting base frame and the end turning assembly to flip in position, so that the end turning assembly can perform turning operations on the two ends of the down tube separately.

[0006] Preferably, the mounting base comprises an annular cover, an attachment plate is fixedly mounted inside the annular cover, and a support frame connected to the end turning assembly is mounted on a side of the attachment plate facing away from the flip assembly.

[0007] Preferably: the end turning assembly includes a main mounting frame and a side connecting frame, the side connecting frame is fixedly connected to the support frame, and the main mounting frame is fixed to the side of the side connecting frame facing away from the flip assembly; a boss is installed at one end of the main mounting frame, and a second driving member is installed at the other end of the main mounting frame, a turning member is rotatably arranged between the main mounting frames, the second driving member is matched with the turning member, and an auxiliary rotating member matching the turning member is detachably installed on the boss by a fastening bolt.

[0008] Preferably: the turning part includes a main rotating shaft body rotatably installed in the main mounting frame, one end of the second driving member of the main rotating shaft body frame is fixedly sleeved with a fixed clamping sleeve, the outer shell of the main rotating shaft body is provided with a turning sleeve, the flip assembly can drive the turning sleeve to switch between vertical placement and longitudinal placement, so as to realize differentiated turning of the two ends of the down tube, and facilitate the welding and mounting of the two ends of the down tube with the vertical head tube and the longitudinal middle shaft tube in the frame respectively, the end of the main rotating shaft body backing away from the fixed clamping sleeve is movably provided with a dynamic clamping sleeve matching the turning sleeve, and the end of the main rotating shaft body backing away from the fixed clamping sleeve is also provided with a locking member connected with the dynamic clamping sleeve.

[0009] Preferably: a thread groove is provided at one end of the main rotating shaft body facing away from the fixed clamping sleeve, the locking piece comprises a locking sleeve, an inner wall of the locking sleeve is provided with an internal thread matching the thread groove, at least two connecting vertical rods are evenly installed at the end of the locking sleeve, and one end of the multiple connecting vertical rods facing away from the locking sleeve is fixedly connected to the dynamic clamping sleeve; and two gripping rods are symmetrically installed outside the locking sleeve.

[0010] Preferably: the auxiliary rotating part comprises a docking platform, in which a rotating column is rotatably arranged via a bearing, and the end of the rotating column is fixedly connected to a locking rod; and an locking groove matching the cross-section of the end of the locking rod is provided on the end surface of the main rotating shaft body facing away from the second driving member; the removal of the auxiliary rotating part can facilitate the removal of the turning sleeve, and the reinstallation of the auxiliary rotating part can provide auxiliary support for the rotation and turning of the newly installed turning sleeve.

[0011] Preferably, the central outer surface of the main rotating shaft body is provided with a plurality of strip-shaped protrusions along the circumferential direction of its axis, and the inner wall of the turning sleeve is provided with corresponding retaining grooves matching the number of the strip-shaped protrusions, so as to facilitate the rapid installation of turning sleeves with different outer diameters onto the main rotating shaft body.

[0012] Preferably: the second driving member includes a second shell fixed on the end face of the main mounting frame, a second driving motor fixed on the end face of the main mounting frame is arranged in the second shell, a driving bevel gear is fixed on the output shaft of the second driving motor, a driven bevel gear is fixedly sleeved on the outside of one end of the main rotating shaft extending into the second shell, and the driven bevel gear is meshingly connected with the driving bevel gear.

[0013] Preferably: the flip assembly includes a first drive motor and a first drive member, the first drive member includes a first rotating shaft rotatably installed in the middle of the mounting plate, and the first rotating shaft is arranged to pass through both sides of the mounting plate, the end of the first rotating shaft facing away from the multi-axis robotic arm is fixedly connected to the attachment disk, one end of the driven gear frame multi-axis robotic arm is fixedly sleeved with a driven gear, a driving gear is installed on the output shaft of the first drive motor, and the driving gear is meshingly connected with the driven gear.

[0014] Preferably, the flip assembly further comprises a first shell, which is fixed to a side of the mounting plate close to the multi-axis robot arm, and the first drive motor and the first drive member are both arranged in the first shell to provide shielding and protection for the two.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The turning sleeve in the turning part of the present invention can be easily replaced, so that the device can be adapted to the turning processing of different lower tube ends. The turning sleeve can be adjusted to a suitable size according to different batches of frame models and the outer diameters of the head tube and the middle shaft tube to be installed, and the outer diameter of the turning sleeve can be ensured to be adapted to the outer diameters of the head tube and the middle shaft tube. After that, the second driving member drives the turning part to rotate at a high speed, so that the turning processing of the lower tube end can be quickly realized, which is stable and reliable.

[0016] 2. In the present invention, the two ends of the lower tube in the frame need to be matched with the orientation characteristics of the head tube and the middle axis tube that need to be welded, that is, the extension lines of the axis lines of the head tube and the middle axis tube are vertical and non-intersecting. By cooperating with the flip assembly, the end turning assembly can be rotated ninety degrees at an appropriate time, so that the end turning assembly can be in a vertical state to turn one end of the lower tube that matches the head tube, and can also be quickly switched to a longitudinally flat state to turn the other end of the lower tube that matches the middle axis tube. The practicality of the device is greatly improved, and it is flexible and reliable.

[0017] 3. The present invention cooperates with a multi-axis robot arm to quickly process the lower tubes to be turned that are sequentially transmitted on the production line. The matching arrangement of the locking piece on the dynamic clamping sleeve and the threaded groove on the end of the main rotating shaft body can achieve the purpose of quickly replacing the turning sleeve on the main rotating shaft body, and the matching arrangement of the abutment groove and the abutment rod in the auxiliary rotating part can improve the stability of the replaceable turning sleeve during high-speed rotation, avoid the occurrence of breakage, shaking, etc., and improve the reliability of the operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the assembly of the upper and lower tubes, the head tube, and the middle axle tube of a bicycle in the prior art; Figure 2 A perspective view of the present invention; Figure 3 is a side view of the present invention; Figure 4 This is a structural disassembly diagram of the mounting plate and the flip assembly of the present invention; Figure 5 It is a schematic diagram of the structure of the mounting base and the end turning assembly of the present invention; Figure 6 It is a schematic structural diagram of the end turning assembly of the present invention; Figure 7 It is a structural exploded view of the turning part of the present invention; Figure 8 This is a disassembled view of the main rotating shaft and the turning sleeve of the present invention.

[0019] In the figure: 1. Lower tube; 2. Head tube; 3. Middle axis tube; 4. Multi-axis robotic arm; 5. Mounting plate; 6. Flip assembly; 61. First housing; 62. First drive motor; 63. First drive member; 631. First rotating shaft; 632. Driven gear; 633. Driving gear; 7. Mounting base; 71. Ring cover; 72. Attachment plate; 73. Support frame; 8. End turning assembly; 81. Main mounting frame; 82. Side connecting frame; 83. Boss; 84. Auxiliary rotating part; 841. Docking platform; 842. Rotating column; 843. Stop rod; 85. Turning part; 851. Main rotating shaft; 8511. Threaded groove; 8512. Stop groove; 8513. Strip protrusion; 852. Turning sleeve; 8521. Strip groove; 853. Fixed clamping sleeve; 854. Moving clamping sleeve; 855. Locking part; 8551. Locking sleeve; 8552. Grip rod; 8553. Connecting vertical rod; 8554. Internal thread; 86. Second driving part; 861. Second housing; 862. Second driving motor; 863. Active bevel gear; 864. Driven bevel gear. DETAILED DESCRIPTION

[0020] 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.

[0021] Reference Figure 1-Figure 5As shown, the present invention provides an automatic cutting device for bicycle tube and axle parts, which is used for turning the two ends of a down tube 1 so as to facilitate welding and connecting the two ends with a head tube 2 and a middle tube 3 respectively. During welding and assembly, one end of the down tube 1 is connected with the head tube 2, and the other end of the down tube 1 is connected with a rear chain fork, a seat tube, etc. through the middle tube 3. It should be noted that the extended lines of the axis center lines of the head tube 2 and the middle tube 3 are perpendicular and do not intersect. The device comprises a multi-axis mechanical arm 4 and a mounting plate 5 mounted on the front end of the multi-axis mechanical arm 4, and also comprises a flip assembly 6 and a mounting base frame 7. The flip assembly 6 and the mounting base frame 7 The mounting base 7 is respectively mounted on both sides of the mounting plate 5. An end turning assembly 8 for turning the end of the lower tube 1 is installed in the mounting base 7. The flip assembly 6 can drive the mounting base 7 and the end turning assembly 8 to flip in position, so as to facilitate the end turning assembly 8 to perform turning operations on the two ends of the lower tube 1. Specifically, according to the position characteristics of the head tube 2 and the middle axis tube 3 that need to be welded at both ends of the lower tube 1 in the frame, that is, the extended lines of the axis lines of the head tube 2 and the middle axis tube 3 are vertical and non-intersecting, the flip assembly 6 can be used to rotate the end turning assembly 8 by ninety degrees at an appropriate time so that the lower tube 1 can be turned to the lower tube 1. The end turning assembly 8 can be in a vertical state to turn one end of the down tube 1 matching the head tube 2, and can also be quickly switched to a longitudinally flat state to turn the other end of the down tube 1 matching the middle axis tube 3; the mounting base 7 includes an annular cover 71, an attachment plate 72 is fixedly installed in the annular cover 71, and a support frame 73 connected to the end turning assembly 8 is installed on the side of the attachment plate 72 facing away from the flip assembly 6; the end turning assembly 8 includes a main mounting frame 81 and a side connecting frame 82, the side connecting frame 82 is fixedly connected to the support frame 73, and the main mounting frame 81 is fixed on the side connecting frame The connecting frame 82 is facing away from the side of the flip assembly 6; a boss 83 is installed at one end of the main mounting frame 81, and a second driving member 86 is installed at the other end of the main mounting frame 81. A turning part 85 is rotatably arranged between the main mounting frames 81, and the second driving member 86 is matched with the turning part 85. The second driving member 86 provides power for the high-speed rotation of the turning part 85, and an auxiliary rotating member 84 matching the turning part 85 is detachably installed on the boss 83 by fastening bolts. The auxiliary rotating member 84 can provide support for the high-speed rotating turning part 85 to prevent the turning part 85 from breaking off, shaking, etc.

[0022] In a further embodiment, referring to Figure 6-Figure 8The turning part 85 includes a main rotating shaft 851 rotatably mounted in the main mounting frame 81, one end of the second driving member 86 of the main rotating shaft 851 frame is fixedly sleeved with a fixed clamping sleeve 853, and the outer shell of the main rotating shaft 851 is provided with a turning sleeve 852, and the flip assembly 6 can drive the turning sleeve 852 to switch between the vertical placement and the longitudinal placement, so as to realize the differential turning of the two ends of the down tube 1, and facilitate the welding and mounting of the two ends of the down tube 1 with the vertical head tube 2 and the longitudinal middle shaft tube 3 in the frame respectively, and the main rotating shaft 851 is back to the fixed A movable clamping sleeve 854 matching the turning sleeve 852 is movably provided at one end of the clamping sleeve 853. The end faces of the fixed clamping sleeve 853 and the movable clamping sleeve 854 opposite to each other are fixed with a layer of anti-skid rubber ring by epoxy resin adhesive to improve the ability of the two to tightly fix the turning sleeve 852. A locking piece 855 connected to the movable clamping sleeve 854 is also provided at one end of the main rotating shaft body 851 facing away from the fixed clamping sleeve 853. A threaded groove 8511 is provided at one end of the main rotating shaft body 851 facing away from the fixed clamping sleeve 853. The locking piece 855 includes a locking sleeve 855. 1. The inner wall of the locking sleeve 8551 is provided with an internal thread 8554 that is threadably matched with the thread groove 8511. At least two connecting vertical rods 8553 are evenly installed at the end of the locking sleeve 8551. The ends of the connecting vertical rods 8553 facing away from the locking sleeve 8551 are fixedly connected to the dynamic clamping sleeve 854. Two gripping rods 8552 are symmetrically installed outside the locking sleeve 8551. Each time a new size of the turning sleeve 852 is replaced, that is, the outer diameter of the turning sleeve 852 is different, the corresponding turning range of the end of the lower tube 1 is also different, ensuring that the device It can adapt to the turning processing of the head tube 2 and the middle shaft tube 3 with different outer diameters before assembly. Specifically, when replacing the turning sleeve 852, the auxiliary rotating part 84 is removed from the boss 83, and the two grips 8552 are held by hand to rotate and remove the dynamic clamping sleeve 854, and then the turning sleeve 852 is taken out upward, and then a new turning sleeve 852 is put on, and the two grips 8552 are held by hand, and the locking sleeve 8551 is re-put on, and the locking sleeve 8551 is rotated in the opposite direction to prompt the dynamic clamping sleeve 854 to press downward against the turning sleeve 852, so as to realize the replacement operation of the turning sleeve 852.

[0023] In this embodiment, the turning sleeve 852 in the turning part 85 can be easily replaced, so that the device can be adapted to the turning processing of different ends of the down tube 1. The turning sleeve 852 can be adjusted to a suitable size according to the outer diameters of the head tube 2 and the middle shaft tube 3 to be installed according to different batches of frame models, etc., to ensure that the outer diameter of the turning sleeve 852 is adapted to the outer diameters of the head tube 2 and the middle shaft tube 3.

[0024] In a further embodiment, referring to Figure 5 and Figure 6The auxiliary rotating part 84 includes a docking platform 841, in which a rotating column 842 is rotatably arranged through a bearing, and a stopper rod 843 is fixedly connected to the end of the rotating column 842; and a stopper groove 8512 matching the cross section of the end of the stopper rod 843 is provided on the end surface of the main rotating shaft body 851 facing away from the second driving member 86; the auxiliary rotating part 84 is removed to facilitate the removal of the turning sleeve 852, and the auxiliary rotating part 84 is reinstalled to assist the rotation and turning of the newly installed turning sleeve 852 Support, specifically, the cross-section of the locking rod 843 is a diamond-shaped structure, and correspondingly, the cross-section of the locking groove 8512 is also designed to be a diamond-shaped structure. The locking rod 843 and the locking groove 8512 are clamped together, which can avoid the occurrence of shaking and the like during the rotation of the main rotating shaft 851, and the rotating column 842 connected to the locking rod 843 is rotatably set in the docking platform 841, which can ensure that the main rotating shaft 851 can only rotate and cannot jump up and down, that is, it can only rotate radially and cannot move axially.

[0025] In this embodiment, the matching arrangement of the latching groove 8512 and the latching rod 843 in the auxiliary rotating part 84 can improve the stability of the replaceable turning sleeve 852 during high-speed rotation, avoid the occurrence of breakage, shaking, etc., and improve the reliability of the device operation.

[0026] In a further embodiment, referring to Figure 8 The central outer surface of the main rotating shaft body 851 is provided with several strip-shaped protrusions 8513 along the circumferential direction of its axis, and the inner wall of the turning sleeve 852 is provided with corresponding latching grooves 8512 matching the number of the strip-shaped protrusions 8513, so as to facilitate the rapid installation of the turning sleeves 852 with different outer diameters onto the main rotating shaft body 851.

[0027] In this embodiment, the team-mate setting of the strip protrusion 8513 and the strip groove 8521 can facilitate the rapid installation of turning sleeves 852 of different sizes onto the main rotating shaft 851, and can prevent the turning sleeve 852 from rotating when the main rotating shaft 851 rotates at a high speed, thereby achieving a firm locking of the turning sleeve 852 and the main rotating shaft 851.

[0028] In a further embodiment, referring to Figure 6 The second driving member 86 includes a second shell 861 fixed on the end surface of the main mounting frame 81. The side of the second shell 861 may be provided with a plurality of heat dissipation slits to provide heat dissipation for the second driving motor 862. The second shell 861 is provided with a second driving motor 862 fixed on the end surface of the main mounting frame 81. A driving bevel gear 863 is fixed on the output shaft of the second driving motor 862. A driven bevel gear 864 is fixedly sleeved on the outside of one end of the main rotating shaft 851 extending into the second shell 861. The driven bevel gear 864 is meshingly connected with the driving bevel gear 863.

[0029] In this embodiment, starting the second drive motor 862 can drive the active bevel gear 863 connected thereto to rotate. The active bevel gear 863 rotates to engage and drive the driven bevel gear 864 to rotate. The driven bevel gear 864 rotates to drive the main rotating shaft 851 inserted therein to rotate. The main rotating shaft 851 rotates to drive the turning sleeve 852 to rotate, thereby achieving the purpose of turning the end of the lower tube 1.

[0030] In a further embodiment, referring to Figure 4 The flip assembly 6 includes a first drive motor 62 and a first drive member 63. The first drive member 63 includes a first rotating shaft 631 rotatably mounted in the middle of the mounting plate 5, and the first rotating shaft 631 is arranged to pass through both sides of the mounting plate 5. The end of the first rotating shaft 631 facing away from the multi-axis robot arm 4 is fixedly connected to the attachment plate 72. The driven gear 632 is fixedly sleeved on one end of the frame multi-axis robot arm 4 with the driven gear 632. A driving gear 633 is installed on the output shaft of the first drive motor 62, and the driving gear 633 is meshed with the driven gear 632. When the first drive motor 62 is started, the driving gear 633 is driven to rotate. The rotation of the driving gear 633 can drive the driven gear 632 to rotate. The rotation of the driven gear 632 can drive the first rotating shaft 631 to rotate. The rotation of the first rotating shaft 631 can drive the mounting base 7 to rotate, thereby achieving the purpose of driving the end turning assembly 8. The flip assembly 6 also includes a first shell 61, which is fixed to a side of the mounting plate 5 close to the multi-axis robot 4. The first drive motor 62 and the first drive member 63 are both arranged in the first shell 61 to provide shielding and protection for the two.

[0031] In this embodiment, the first driving motor 62 is started to drive the active gear 633 to rotate. The rotation of the active gear 633 can drive the driven gear 632 to rotate. The rotation of the driven gear 632 can drive the first rotating shaft 631 to rotate. The rotation of the first rotating shaft 631 can drive the mounting base 7 to rotate, thereby achieving the purpose of driving the end turning assembly 8. Specifically, when the turning part 85 in the end turning assembly 8 is vertically arranged, it cooperates with the turning sleeve 852 of the required size to quickly turn the end of the lower tube 1 that needs to be butt-welded to the head tube 2. After the end turning assembly 8 is turned ninety degrees with the help of the flip assembly 6, the turning part 85 in the end turning assembly 8 is longitudinally flattened. When it cooperates with the turning sleeve 852 of the required size, it can quickly turn the end of the lower tube 1 that needs to be butt-welded to the middle shaft tube 3. The flexibility of the device is greatly improved, and the efficiency of the processing can also be greatly improved.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic cutting device for bicycle tube and axle parts, used for turning the two ends of a down tube (1) to facilitate welding of the two ends to a head tube (2) and a middle tube (3), comprising a multi-axis mechanical arm (4) and a mounting plate (5) mounted on the front end of the multi-axis mechanical arm (4), characterized in that: The invention also comprises a flipping assembly (6) and a mounting base (7), wherein the flipping assembly (6) and the mounting base (7) are respectively mounted on two sides of the mounting plate (5), and an end turning assembly (8) for turning the end of the lower tube (1) is mounted in the mounting base (7). The flipping assembly (6) can drive the mounting base (7) and the end turning assembly (8) to flip in position, so as to facilitate the end turning assembly (8) to perform turning operations on the two ends of the lower tube (1) respectively.

2. The automatic cutting device for bicycle tube and axle parts according to claim 1, characterized in that: The mounting base (7) comprises an annular cover (71), an attachment plate (72) being fixedly mounted inside the annular cover (71), and a support frame (73) connected to the end turning assembly (8) being mounted on a side of the attachment plate (72) facing away from the flip assembly (6).

3. The automatic cutting device for bicycle tube and axle parts according to claim 2, characterized in that: The end turning assembly (8) comprises a main mounting frame (81) and a side connecting frame (82), the side connecting frame (82) being fixedly connected to the support frame (73), and the main mounting frame (81) being fixed to a side of the side connecting frame (82) facing away from the flipping assembly (6); a boss (83) is mounted on one end of the main mounting frame (81), and a second driving member (86) is mounted on the other end of the main mounting frame (81); a turning member (85) is rotatably arranged between the main mounting frame (81), the second driving member (86) is matched with the turning member (85), and an auxiliary rotating member (84) matching the turning member (85) is detachably mounted on the boss (83) by means of a fastening bolt.

4. The automatic cutting device for bicycle tube and axle parts according to claim 3, characterized in that: The turning part (85) comprises a main rotating shaft (851) rotatably mounted in the main mounting frame (81); one end of the second driving member (86) of the main rotating shaft (851) frame is fixedly sleeved with a fixed clamping sleeve (853); the outer sleeve of the main rotating shaft (851) is provided with a turning sleeve (852); the turning assembly (6) can drive the turning sleeve (852) to switch between the two states of vertical placement and longitudinal placement, so as to realize the rotation of both ends of the lower tube (1). Differential turning facilitates welding and mounting of the two ends of the down tube (1) with the vertical head tube (2) and the longitudinal middle tube (3) in the frame, respectively; a movable clamping sleeve (854) matching the turning sleeve (852) is movably provided at one end of the main rotating shaft (851) facing away from the fixed clamping sleeve (853); and a locking member (855) connected to the movable clamping sleeve (854) is also provided at one end of the main rotating shaft (851) facing away from the fixed clamping sleeve (853).

5. The automatic cutting device for bicycle tube and axle parts according to claim 4, characterized in that: A thread groove (8511) is formed at one end of the main rotating shaft (851) facing away from the fixed clamping sleeve (853); the locking member (855) comprises a locking sleeve (8551); an inner wall of the locking sleeve (8551) is provided with an internal thread (8554) threadably matched with the thread groove (8511); at least two connecting vertical rods (8553) are evenly mounted at the end of the locking sleeve (8551); one end of the plurality of connecting vertical rods (8553) facing away from the locking sleeve (8551) is fixedly connected to the dynamic clamping sleeve (854); and two gripping rods (8552) are symmetrically mounted outside the locking sleeve (8551).

6. The automatic cutting device for bicycle tube and axle parts according to claim 4, characterized in that: The auxiliary rotating member (84) comprises a docking platform (841), a rotating column (842) being rotatably arranged in the docking platform (841) via a bearing, and a stop rod (843) being fixedly connected to the end of the rotating column (842); and a stop groove (8512) matching the cross section of the end of the stop rod (843) is formed on the end surface of the main rotating shaft (851) facing away from the second driving member (86); the auxiliary rotating member (84) can be removed to facilitate the removal of the turning sleeve (852), and the auxiliary rotating member (84) can be reinstalled to provide auxiliary support for the rotation of the newly installed turning sleeve (852).

7. The automatic cutting device for bicycle tube and axle parts according to claim 4, characterized in that: The central outer surface of the main rotating shaft (851) is provided with a plurality of strip-shaped protrusions (8513) along the circumferential direction of its axis, and the inner wall of the turning sleeve (852) is provided with corresponding retaining grooves (8512) whose number matches the number of the strip-shaped protrusions (8513), so as to facilitate the rapid installation of turning sleeves (852) with different outer diameters onto the main rotating shaft (851).

8. The automatic cutting device for bicycle tube and axle parts according to claim 4, characterized in that: The second driving member (86) comprises a second housing (861) fixed on the end surface of the main mounting frame (81); a second driving motor (862) fixed on the end surface of the main mounting frame (81) is arranged in the second housing (861); a driving bevel gear (863) is fixed on the output shaft of the second driving motor (862); a driven bevel gear (864) is fixedly sleeved on the outside of one end of the main rotating shaft (851) extending into the second housing (861); the driven bevel gear (864) is meshingly connected with the driving bevel gear (863).

9. The automatic cutting device for bicycle tube and axle parts according to any one of claims 2 to 8, characterized in that: The flip assembly (6) comprises a first drive motor (62) and a first drive member (63); the first drive member (63) comprises a first rotating shaft (631) rotatably mounted in the middle of the mounting plate (5), and the first rotating shaft (631) is arranged to pass through both sides of the mounting plate (5); one end of the first rotating shaft (631) facing away from the multi-axis mechanical arm (4) is fixedly connected to the attachment plate (72); one end of the driven gear (632) frame of the multi-axis mechanical arm (4) is fixedly sleeved with the driven gear (632); a driving gear (633) is mounted on the output shaft of the first drive motor (62); the driving gear (633) is meshingly connected with the driven gear (632).

10. The automatic cutting device for bicycle tube and axle parts according to claim 9, characterized in that: The flip assembly (6) further comprises a first shell (61), wherein the first shell (61) is fixed to a side of the mounting plate (5) close to the multi-axis robot arm (4), and the first drive motor (62) and the first drive member (63) are both arranged in the first shell (61), thereby providing shielding and protection for the two.

Images