Forging machine for middle axle of bicycle

Abstract

The invention discloses a bicycle center shaft forging forming machine, and relates to the technical field of bicycle center shaft forming, the bicycle center shaft forging forming machine comprises a machine body, a groove is formed in the middle of one side of the machine body, a sliding groove is formed in the machine body above the groove, a movable seat is slidably connected to the interior of the sliding groove, and a stamping air cylinder is connected to the top of the movable seat; a fixed die is embedded in the upper surface of the machine body below the groove, a punching die is embedded in the lower surface of the movable seat, mounting assemblies are mounted on the outer sides of the fixed die and the punching die, a bottom plate is integrally connected to one side of the machine body, and a driving motor is mounted on the upper surface of the bottom plate. By arranging the rotating disc and the transferring and clamping assembly, the center shaft can be continuously subjected to feeding, pretreatment, three-time machining and discharging, and continuous and efficient forging and pressing machining of the bicycle center shaft is kept; and by arranging the pretreatment assembly, the effect of removing and pretreating particle impurities on the surface of the center shaft can be achieved, and the situation that the particle impurities cause center shaft surface sinking in the forging and pressing process is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of bicycle center axle forming, in particular to a bicycle center axle forging machine. Background Art

[0002] The bicycle bottom bracket is located at the bottom of the bicycle frame and is used to connect the left and right cranks to the frame. The bicycle bottom bracket is usually cylindrical in shape with a smooth axis in the middle to reduce friction during rotation. Existing bicycle bottom brackets are usually made of steel, aluminum alloy, titanium alloy and ceramic. Among them, steel bicycle bottom brackets are often formed by stamping and forging on a forging machine. Pressure is applied to the metal blank to change the shape and size of the metal, making the internal structure of the metal blank dense and improving the strength and toughness of the bottom bracket.

[0003] Due to the diverse structures of the outer surface of bicycle axles, a forging machine is usually required to process them multiple times. For example, in the prior art, three dies are used for forging three times. During the three-way processing of the axle with the three dies, the axle relies on clamping and transferring. However, the existing forging machine is difficult to quickly transfer the cylindrical blank, and the cylindrical blank is difficult to stably clamp. In addition, different dies need to be replaced for use in processing different types of bicycle axles. However, the existing dies are mostly installed with bolts, which are inconvenient to install and disassemble, and are not conducive to rapid replacement of dies. Summary of the Invention

[0004] The object of the present invention is to provide a bicycle axle forging machine to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bicycle axle forging machine, comprising a fuselage, a groove is provided in the middle of one side of the fuselage, a slide groove is provided in the fuselage above the groove, a movable seat is slidably connected in the slide groove, the top of the movable seat is connected to a punching cylinder, a fixed die is embedded in the upper surface of the fuselage below the groove, a punching die is embedded in the lower surface of the movable seat, and mounting components are installed on the outer sides of the fixed die and the punching die, one side of the fuselage is integrally connected to a bottom plate, a driving motor is installed on the upper surface of the bottom plate, a rotating shaft is connected to the top of the rotating shaft, a turntable is connected to the outer side wall of the turntable six second movable grooves are provided, and transfer clamping components are installed in the six second movable grooves, positioning cylinders are installed in the fuselage on the upper and lower sides of the groove on the front side of the slide, and a pre-treatment component is installed on the inner wall of the groove on the front side of the slide; The mounting assembly includes a mounting seat, a slot is provided inside the side wall of the mounting seat, a plug ring is movably inserted inside the slot, the outer wall of the plug ring and the inner wall of the slot are both provided with threads, a side ear is connected to the outer wall of the plug ring away from the mounting seat, an annular groove is provided on the inner wall of the plug ring, a connecting ring is provided inside the annular groove, and a conical ring is connected to the side of the connecting ring close to the mounting seat.

[0006] Preferably, an ejector pin is installed inside the fixed mold, a first movable groove is opened inside the fuselage below the ejector pin, a ejector plate is slidably connected inside the first movable groove, a ejector cylinder is connected to the bottom of the ejector plate, and the ejector plate is Z-shaped.

[0007] Preferably, the mounting seat is in the shape of a circular ring, and the two mounting seats are respectively fixedly mounted on the lower surface of the movable seat and the upper surface of the fuselage corresponding to the position of the movable seat. The outer diameter of the insert ring is adapted to the inner diameter of the slot. The insert ring is inserted into the slot and is threadedly connected to the slot.

[0008] Preferably, the conical ring is in a cone shape with one end wide and the other end narrow, the connecting ring is clamped in the annular groove and rotates, one end of the conical ring is movably plugged into the mounting seat, and the other end of the conical ring is rotatably connected to the plug ring via the connecting ring.

[0009] Preferably, the transfer clamping assembly includes two movable blocks slidably installed in the second movable groove, a double-headed cylinder is commonly connected between the two movable blocks, one side of the two movable blocks extends from the side wall of the turntable and is respectively connected to a clamping block, an electromagnet is installed on the side where the two clamping blocks are close to each other, and an arc-shaped clamping groove is opened on the side where the two electromagnets are close to each other.

[0010] Preferably, the number of the clamps is twelve, and two are grouped into six groups. The six groups of clamps respectively clamp six bicycle axles, and are divided into loading position, pre-processing position, primary processing position, secondary processing position, tertiary processing position and unloading position in a clockwise direction corresponding to the fuselage. The two electromagnets generate magnetism when the circuit is turned on and the two magnets attract each other, and the magnetism disappears when the circuit is disconnected.

[0011] Preferably, the telescopic end of the positioning cylinder is connected to a positioning block, and there are two positioning cylinders and two positioning blocks. The two positioning cylinders are symmetrically arranged with respect to the bicycle center axis clamped by the clamping block.

[0012] Preferably, the pretreatment component includes a U-shaped plate slidably mounted on the inner wall of the groove, the U-shaped plate is hollow inside and a dust suction hole is opened through the inner wall, a telescopic cylinder is installed inside the fuselage on one side of the U-shaped plate, the top of the U-shaped plate is connected to a dust suction pipe, and the top of the dust suction pipe is connected to a dust suction fan.

[0013] Preferably, the U-shaped plate has a U-shaped plate shape in longitudinal section, the number of the dust suction holes is several and they are arranged equidistantly on the inner wall of the U-shaped plate, the dust suction holes are connected to the inner cavity of the U-shaped plate, and the inner cavity of the U-shaped plate is connected to the dust suction fan through the dust suction pipe.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This bicycle axle forging machine is equipped with a turntable and a transfer clamping assembly. After the axle is processed between the fixed die and the punch die, the clamping block closes and clamps the axle. The drive motor drives the rotating shaft to rotate, and the rotating shaft drives the turntable to rotate. The turntable drives the clamping block to clamp the axle and rotate around the axis of the rotating shaft. The clamping block clamps the axle and passes through the loading position, pretreatment position, primary processing position, secondary processing position, tertiary processing position and unloading position in sequence, so that the axle can be continuously loaded, pretreated, tertiary processed and unloaded, maintaining the continuous and efficient forging process of the bicycle axle.

[0015] 2. This bicycle axle forging machine is equipped with a pre-treatment component. When the clamping block clamps the axle and moves it to the pre-treatment position, the two positioning cylinders extend and push the two positioning blocks closer to each other to clamp the upper and lower ends of the axle. The clamping blocks are opened, and then the telescopic cylinder extends to push the U-shaped plate closer to the axle until the axle is inserted into the inner side of the U-shaped groove. The dust suction fan is started to suck through the dust suction pipe, so that the dust suction hole generates negative pressure and sucks the particulate impurities attached to the surface of the axle, thereby achieving the effect of clearing the particulate impurities on the surface of the axle and preventing the particulate impurities from causing depression on the axle surface during the forging process.

[0016] 3. This bicycle axle forging machine is provided with a mounting assembly. When replacing the fixed die and the punch die, the new fixed die and the punch die are passed through the mounting seat, and the insert ring is inserted into the slot. The insert ring drives the tapered ring to be inserted into the gap between the inner wall of the mounting seat and the fixed die and the punch die. The insert ring is driven to rotate according to the side ear. The insert ring is threadedly connected to the slot. The insert ring rotates relative to the tapered ring through the annular groove and pushes the tapered ring deeper. The tapered ring is inserted into the gap between the inner wall of the mounting seat and the fixed die and the punch die to squeeze the fixed die and the punch die, so that the friction between the fixed die, the punch die and the mounting seat is increased, and the fixed die and the punch die are kept stably installed. No bolts are required for tightening during the installation process, and the fixed die and the punch die can be quickly disassembled and replaced.

[0017] 4. This bicycle axle forging machine is equipped with clamping blocks and electromagnets. The double-headed cylinder contracts and pulls the movable block to slide in the second movable groove. The movable block drives the clamping blocks to move, so that the two clamping blocks approach each other to clamp the axle. The steel axle can be magnetically attracted. By controlling the conduction of the circuit on the electromagnet, a magnetic attraction force can be generated, which can effectively prevent the clamping blocks from falling during the transfer of the axle and maintain a stable clamping of the axle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a front cross-sectional view of the present invention; Figure 3 It is a cross-sectional view of the pre-treatment station of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the turntable of the present invention from a top view; Figure 5 A front cross-sectional view of the connection between the mounting assembly and the punch die of the present invention; Figure 6 It is a schematic diagram of the exploded structure of the installation assembly of the present invention.

[0019] Figure: 1, fuselage; 2, groove; 3, slide; 4, movable seat; 5, punching cylinder; 6, fixed die; 61, ejector pin; 62, first movable groove; 63, ejector plate; 64, ejector cylinder; 7, punching die; 8, mounting assembly; 81, mounting seat; 82, slot; 83, insert ring; 84, thread; 85, side ear; 86, annular groove; 87, tapered ring; 88, connecting ring; 9, turntable; 91, second movable Movable groove; 10. Rotating shaft; 11. Driving motor; 12. Bottom plate; 13. Transfer clamping assembly; 131. Movable block; 132. Double-head cylinder; 133. Clamping block; 134. Electromagnet; 135. Arc-shaped clamping groove; 14. Positioning cylinder; 141. Positioning block; 15. Pretreatment assembly; 151. U-shaped plate; 152. Dust suction hole; 153. Telescopic cylinder; 154. Dust suction pipe; 155. Dust suction fan. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0023] like Figures 1 to 6 As shown, the bicycle axle forging machine of this embodiment includes a machine body 1, a groove 2 is opened in the middle of one side of the machine body 1, a slide groove 3 is opened inside the machine body 1 above the groove 2, a movable seat 4 is slidably connected inside the slide groove 3, the movable seat 4 moves downward in the slide groove 3 to drive the punch 7 to move down to punch the axle, and a punching cylinder 5 is connected to the top of the movable seat 4, and the punching cylinder 5 is installed on the upper surface of the machine body 1 for pushing the movable seat 4 to move down for punching, a fixed die 6 is embedded in the upper surface of the machine body 1 below the groove 2, and a punching die 7 is embedded in the lower surface of the movable seat 4, the fixed die 6 and the punching die 7 are used in conjunction with each other for punching and forming the axle, and there are three sets of fixed die 6 and punching die 7 in total, which are used for three forging processes of the axle respectively, and mounting components 8 are installed on the outside of the fixed die 6 and the punching die 7 for installing the fixed die 6 and the punching die 7, so that the fixed die 6 and the punching die 7 can be quickly replaced. A bottom plate 12 is integrally connected to one side of the machine body 1, and a driving motor is installed on the upper surface of the bottom plate 12 The machine 11, the shaft end of the driving motor 11 is connected to the rotating shaft 10, driving the rotating shaft 10 to rotate clockwise, the top shaft end of the driving motor 11 is connected to the rotating shaft 10, and the top of the rotating shaft 10 is connected to the turntable 9, and the rotating shaft 10 is driven by the driving motor 11 to rotate, and the rotating shaft 10 drives the turntable 9 to rotate, and the turntable 9 drives the clamping block 133 to clamp the central shaft and rotate around the axis of the rotating shaft 10, so that the clamping block 133 clamps the central shaft and passes through the loading position, pretreatment position, primary processing position, secondary processing position, tertiary processing position and unloading position in sequence to complete continuous processing. Six second movable grooves 91 are provided on the outer wall of the turntable 9, and the six second movable grooves 91 are equipped with transfer clamping components 13 for clamping the central shaft for transfer. Positioning cylinders 14 are installed inside the fuselage 1 on the upper and lower sides of the groove 2 on the front side of the slide 3, and a pretreatment component 15 is installed on the inner wall of the groove 2 on the front side of the slide 3 to clean the particle impurities remaining on the surface of the central shaft; The mounting assembly 8 includes a mounting seat 81, a slot 82 is provided inside the side wall of the mounting seat 81, and a plug ring 83 is movably inserted inside the slot 82. The plug ring 83 and the slot 82 are both annular, and the outer wall of the plug ring 83 and the inner wall of the slot 82 are both provided with threads 84. The outer wall of the plug ring 83 at one end away from the mounting seat 81 is connected to a side ear 85 for facilitating the manual rotation of the plug ring 83. An annular groove 86 is provided on the inner wall of the plug ring 83, and a connecting ring 88 is provided inside the annular groove 86. The longitudinal section of the connecting ring 88 and the annular groove 86 is L-shaped, so that the connecting ring 88 is stably located inside the annular groove 86, and a conical ring 87 is connected to the side of the connecting ring 88 close to the mounting seat 81.

[0024] Specifically, an ejector pin 61 is installed inside the fixed mold 6, and a first movable groove 62 is opened inside the fuselage 1 below the ejector pin 61. A ejector plate 63 is slidably connected inside the first movable groove 62. The ejector pin 61 is in contact with the ejector plate 63 but is not connected. A ejector cylinder 64 is connected to the bottom of the ejector plate 63. The ejector plate 63 is Z-shaped. The ejector cylinder 64 is extended to push the ejector plate 63 upward in the first movable groove 62. The ejector plate 63 pushes the ejector pin 61 upward to eject the center axis in the fixed mold 6 upward.

[0025] Furthermore, the mounting seat 81 is in the shape of a circular ring, and the two mounting seats 81 are respectively fixedly mounted on the lower surface of the movable seat 4 and the upper surface of the fuselage 1 corresponding to the position of the movable seat 4. The outer diameter of the insert ring 83 is adapted to the inner diameter of the slot 82. The insert ring 83 is inserted into the interior of the slot 82 and is connected to the thread 84 of the slot 82 via the thread 84. After the new fixed mold 6 and the punch die 7 pass through the mounting seat 81, the insert ring 83 is inserted into the interior of the slot 82, and the insert ring 83 is driven to rotate according to the side ear 85. The insert ring 83 is connected to the thread 84 of the slot 82 via the thread 84.

[0026] Furthermore, the conical ring 87 is in the shape of a cone with one end wide and the other end narrow. The connecting ring 88 is stuck in the annular groove 86 and rotates. One end of the conical ring 87 is movably plugged into the mounting seat 81, and the other end of the conical ring 87 is rotatably connected to the insert ring 83 via the connecting ring 88. After the insert ring 83 is inserted into the slot 82, the insert ring 83 drives the conical ring 87 to insert into the gap between the inner wall of the mounting seat 81 and the fixed die 6 and the die 7. The insert ring 83 rotates relative to the conical ring 87 through the annular groove 86 and pushes the conical ring 87 deeper. The conical ring 87 is inserted into the gap between the inner wall of the mounting seat 81 and the fixed die 6 and the die 7 to squeeze the fixed die 6 and the die 7, thereby increasing the friction between the fixed die 6, the die 7 and the mounting seat 81, maintaining the stable installation of the fixed die 6 and the die 7, and no bolts are required to be tightened during the installation process, thereby realizing rapid disassembly and replacement of the fixed die 6 and the die 7.

[0027] Furthermore, the transfer clamping assembly 13 includes two movable blocks 131 slidably installed in the second movable groove 91, and a double-headed cylinder 132 is commonly connected between the two movable blocks 131. The double-headed cylinder 132 is installed inside the turntable 9. One side of the two movable blocks 131 extends from the side wall of the turntable 9 and is respectively connected to a clamping block 133. An electromagnet 134 is installed on the side where the two clamping blocks 133 are close to each other. An arc-shaped clamping groove 135 is opened on the side where the two electromagnets 134 are close to each other. The movable block 131 is pulled to slide in the second movable groove 91 by the contraction of the double-headed cylinder 132. The movable block 131 drives the clamping block 133 to move, so that the two clamping blocks 133 are close to each other to clamp the center axis, and the steel center axis can be magnetically attracted. By controlling the circuit conduction on the electromagnet 134, a magnetic attraction force can be generated to adsorb the center axis, which can effectively prevent the clamping block 133 from falling during the transfer of the center axis.

[0028] Furthermore, there are twelve clamping blocks 133, and two of them are divided into six groups. The six groups of clamping blocks 133 respectively clamp six bicycle axles, and are divided into loading position, pretreatment position, primary processing position, secondary processing position, tertiary processing position and unloading position corresponding to the fuselage 1 in a clockwise direction. The clamping blocks 133 clamp the axle and pass it through the loading position, pretreatment position, primary processing position, secondary processing position, tertiary processing position and unloading position in sequence, so that the axle can be continuously loaded, pretreated, tertiary processed and unloaded, maintaining the continuous and efficient forging of the bicycle axle. The two electromagnets 134 generate magnetism when the circuit is turned on and the two magnets attract each other. The magnetism disappears when the circuit is disconnected, preventing the clamping blocks 133 from falling during the transfer of the clamped axle, thereby maintaining stable clamping of the axle.

[0029] Furthermore, the telescopic end of the positioning cylinder 14 is connected to a positioning block 141. There are two positioning cylinders 14 and two positioning blocks 141. The two positioning cylinders 14 are symmetrically arranged with respect to the bicycle center axis clamped on the clamping block 133. When the clamping block 133 clamps the center axis and moves to the pre-processing position, the two positioning cylinders 14 extend and push the two positioning blocks 141 closer to each other to clamp the upper and lower ends of the center axis. The upper and lower ends of the center axis are clamped by the positioning blocks 141, which facilitates the cleaning of the side walls of the center axis.

[0030] Furthermore, the pretreatment component 15 includes a U-shaped plate 151 slidably mounted on the inner wall of the groove 2. The U-shaped plate 151 is hollow inside and a dust suction hole 152 is opened through the inner wall. A telescopic cylinder 153 is installed inside the fuselage 1 on one side of the U-shaped plate 151. The top of the U-shaped plate 151 is connected to a dust suction pipe 154, and the top of the dust suction pipe 154 is connected to a dust suction fan 155. A filter is installed between the dust suction pipe 154 and the dust suction fan 155 to prevent particulate impurities from entering the dust suction fan 155 and causing damage. The dust suction fan 155 is started to suck through the dust suction pipe 154, so that negative pressure is generated in the dust suction hole 152, and the particulate impurities attached to the surface of the central axis are sucked.

[0031] Furthermore, the U-shaped plate 151 has a longitudinal cross-section that is a U-shaped plate 151, and the number of dust suction holes 152 is equidistantly arranged on the inner wall of the U-shaped plate 151. The dust suction holes 152 are connected to the inner cavity of the U-shaped plate 151, and the inner cavity of the U-shaped plate 151 is connected to the dust suction fan 155 through the dust suction pipe 154. The telescopic cylinder 153 is extended to push the U-shaped plate 151 toward the central axis until the central axis is inserted into the inner side of the U-shaped groove. The dust suction fan 155 is started to suction through the dust suction pipe 154, so that the dust suction holes 152 generate negative pressure, and the particulate impurities attached to the surface of the central axis are sucked and cleaned, so as to prevent the particulate impurities from causing the surface of the central axis to be concave during the forging process.

[0032] The method of using this embodiment is as follows: when the user actually uses the forging machine to process and shape the bicycle middle shaft, first, the middle shaft blank is placed in the clamping groove between the two clamping blocks 133 at the loading position, the two clamping blocks 133 clamp the middle shaft blank, and the circuit on the electromagnet 134 is controlled to be turned on so that the electromagnet 134 generates a magnetic attraction force, which magnetically adsorbs the middle shaft blank, effectively preventing the clamping blocks 133 from falling during the transfer of the middle shaft, and maintaining a stable clamping of the middle shaft. Then, the driving motor 11 drives the rotating shaft 10 to rotate, the rotating shaft 10 drives the turntable 9 to rotate, and the turntable 9 drives the clamping blocks 133 to clamp the middle shaft and rotate around the axis of the rotating shaft 10, so that the clamping blocks 133 clamp the middle shaft and transfer it from the loading position to the pre-processing position. The clamping block 133 clamps the central axis and moves it into the groove 2, and is located between the two positioning blocks 141. Then the two positioning cylinders 14 extend to push the two positioning blocks 141 closer to each other, clamping the upper and lower ends of the central axis. At this time, the double-headed cylinder 132 extends to push the movable block 131 to move in the second movable groove 91, and the movable block 131 drives the two clamping blocks 133 away from each other, canceling the clamping effect on the central axis. Then the telescopic cylinder 153 extends to push the U-shaped plate 151 closer to the central axis until the central axis is inserted into the inner side of the U-shaped groove. The dust suction fan 155 is started to suck through the dust suction pipe 154, so that the dust suction hole 152 generates negative pressure, and the particulate impurities attached to the surface of the central axis are sucked and cleaned. After the pretreatment of the central axis is completed, the U-shaped plate 15 1 and the positioning block 141 are reset, the clamping block 133 re-clamps the central axis and transfers it to the primary processing position, the stamping cylinder 5 pushes the movable seat 4 downward, the movable seat 4 drives the die 7 downward, and the clamping block 133 is expanded to close the die 7 and the fixed die 6 to forge the central axis. After the primary processing is completed, the ejection cylinder 64 extends and pushes the ejector plate 63 upward in the first movable groove 62, and the ejector plate 63 pushes the ejector pin 61 upward to eject the central axis in the fixed die 6 upward, and then the clamping block 133 continues to clamp the central axis to the secondary processing position and the tertiary processing position, and completes the three-stage forging forming in sequence, and then transfers it to the unloading position for unloading. When used for different types of central axis forging, the side ear 85 drives the insert ring 83 to rotate, so that the insert ring 83 is removed from the slot 82. Unscrew it and drive the tapered ring 87 out, then take out the old fixed die 6 and die 7, pass the new fixed die 6 and die 7 through the mounting seat 81, insert the insert ring 83 into the slot 82, and the insert ring 83 drives the tapered ring 87 to insert into the gap between the inner wall of the mounting seat 81 and the fixed die 6 and die 7. According to the side ear 85, the insert ring 83 is driven to rotate, and the insert ring 83 is connected to the thread 84 of the slot 82 via the thread 84. The insert ring 83 rotates relative to the tapered ring 87 through the annular groove 86 and pushes the tapered ring 87 deeper. The tapered ring 87 is inserted into the gap between the inner wall of the mounting seat 81 and the fixed die 6 and die 7 to squeeze the fixed die 6 and die 7, so that the friction between the fixed die 6, die 7 and the mounting seat 81 is increased, and the stable installation of the fixed die 6 and die 7 is maintained.

[0033] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalent features for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A bicycle axle forging machine, comprising a body (1), characterized in that: A groove (2) is provided in the middle of one side of the fuselage (1), a slide groove (3) is provided inside the fuselage (1) above the groove (2), a movable seat (4) is slidably connected inside the slide groove (3), a stamping cylinder (5) is connected to the top of the movable seat (4), a fixed die (6) is embedded in the upper surface of the fuselage (1) below the groove (2), a punching die (7) is embedded in the lower surface of the movable seat (4), and mounting components (8) are installed on the outside of the fixed die (6) and the punching die (7), and a bottom plate (12) is integrally connected to one side of the fuselage (1). A driving motor (11) is installed on the upper surface of the bottom plate (12), the top shaft end of the driving motor (11) is connected to a rotating shaft (10), the top of the rotating shaft (10) is connected to a turntable (9), the outer wall of the turntable (9) is provided with six second movable grooves (91), the six second movable grooves (91) are each provided with a transfer clamping assembly (13), positioning cylinders (14) are each provided inside the upper and lower sides of the body (1) of the groove (2) on the front side of the slide (3), and a pre-treatment assembly (15) is provided on the inner wall of the groove (2) on the front side of the slide (3); The mounting assembly (8) includes a mounting seat (81), a slot (82) is provided inside a side wall of the mounting seat (81), an insert ring (83) is movably inserted inside the slot (82), the outer wall of the insert ring (83) and the inner wall of the slot (82) are both provided with threads (84), a side ear (85) is connected to the outer wall of the insert ring (83) away from the mounting seat (81), an annular groove (86) is provided on the inner wall of the insert ring (83), a connecting ring (88) is provided inside the annular groove (86), and a conical ring (87) is connected to the side of the connecting ring (88) close to the mounting seat (81).

2. The bicycle bottom bracket forging machine according to claim 1, characterized in that: A ejector pin (61) is installed inside the fixed mold (6), a first movable groove (62) is provided inside the machine body (1) below the ejector pin (61), a ejector plate (63) is slidably connected inside the first movable groove (62), a ejector cylinder (64) is connected to the bottom of the ejector plate (63), and the ejector plate (63) is Z-shaped.

3. The bicycle bottom bracket forging machine according to claim 1, characterized in that: The mounting seat (81) is annular, and the two mounting seats (81) are fixedly mounted on the lower surface of the movable seat (4) and the upper surface of the fuselage (1) corresponding to the position of the movable seat (4), respectively. The outer diameter of the insert ring (83) is adapted to the inner diameter of the slot (82), and the insert ring (83) is inserted into the interior of the slot (82) and is threadedly connected to the slot (82) via a thread (84).

4. The bicycle bottom bracket forging machine according to claim 1, characterized in that: The conical ring (87) is in a tapered shape with one end being wide and the other end being narrow. The connecting ring (88) is clamped in the annular groove (86) and rotates. One end of the conical ring (87) is movably plugged into the mounting seat (81), and the other end of the conical ring (87) is rotatably connected to the insert ring (83) via the connecting ring (88).

5. The bicycle bottom bracket forging machine according to claim 1, characterized in that: The transfer clamping assembly (13) includes two movable blocks (131) slidably mounted in the second movable groove (91), a double-headed cylinder (132) is commonly connected between the two movable blocks (131), one side of the two movable blocks (131) extends from the side wall of the turntable (9) and is respectively connected to a clamping block (133), an electromagnet (134) is installed on the side where the two clamping blocks (133) are close to each other, and an arc-shaped clamping groove (135) is opened on the side where the two electromagnets (134) are close to each other.

6. The bicycle bottom bracket forging machine according to claim 5, characterized in that: The number of the clamping blocks (133) is twelve, and two of them form a group and are divided into six groups. The six groups of clamping blocks (133) respectively clamp six bicycle axles and are divided into a loading position, a pre-processing position, a primary processing position, a secondary processing position, a tertiary processing position and a unloading position in a clockwise direction corresponding to the fuselage (1). The two electromagnets (134) generate magnetism when the circuit is turned on and the two magnets attract each other. The magnetism disappears when the circuit is turned off.

7. The bicycle bottom bracket forging machine according to claim 5, characterized in that: The telescopic end of the positioning cylinder (14) is connected to a positioning block (141), and the number of the positioning cylinder (14) and the positioning block (141) are both two. The two positioning cylinders (14) are symmetrically arranged with respect to the bicycle center axis clamped by the clamping block (133).

8. The bicycle bottom bracket forging machine according to claim 1, characterized in that: The pretreatment assembly (15) comprises a U-shaped plate (151) slidably mounted on the inner wall of the groove (2); the U-shaped plate (151) is hollow inside and has a dust suction hole (152) extending through the inner wall; a telescopic cylinder (153) is mounted inside the body (1) on one side of the U-shaped plate (151); the top of the U-shaped plate (151) is connected to a dust suction pipe (154); and the top of the dust suction pipe (154) is connected to a dust suction fan (155).

9. The bicycle bottom bracket forging machine according to claim 8, characterized in that: The U-shaped plate (151) has a longitudinal cross-section in the shape of a U-shaped plate (151), the dust suction holes (152) are multiple in number and are arranged at equal intervals on the inner wall of the U-shaped plate (151), the dust suction holes (152) are connected to the inner cavity of the U-shaped plate (151), and the inner cavity of the U-shaped plate (151) is connected to the dust suction fan (155) via the dust suction pipe (154).

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