A type of intelligent CNC ejection mechanism for a heading machine

Abstract

A smart CNC ejection mechanism for a heading machine includes a drive assembly, a linkage assembly, and an impact assembly. The drive assembly includes a servo motor and a reducer. The linkage assembly includes an eccentric wheel, a connecting rod, and a swing arm shaft. The impact assembly includes a guide rail, a slider, and an impact block. A roller is provided at the end of the swing arm shaft away from the connecting rod, and a groove is formed on the impact block near the swing arm shaft. This mechanism is driven by the servo motor to move the impact rod for impact ejection. During machine setup and line changeover, the operator only needs to input the desired screw length L0 on the control screen, and the PLC control program will calculate the rotation α° of the servo motor as α° = L0 * 360 / L. max The machine pauses at certain times, and at the position where the servo motor stops rotating, the impact rod is adjusted to a position where it abuts against the impact rod 35, and then the impact operation is performed. The entire adjustment process is convenient and quick, requiring no large amount of physical labor or debugging experience.

Description

Technical Field

[0001] This utility model relates to the technical field of screw manufacturing and processing, and in particular to an intelligent CNC ejection mechanism for a screw heading machine. Background Technology

[0002] Traditional heading machines use an ejector mechanism that adjusts the ejection point radius of the swing arm to change the product length. This length variation, in turn, alters the start and end times of the ejection process. Traditional heading machines rely on a single motor for this mechanism. During line changes or adjustments, the operator must manually adjust the faceplate within the ejector mechanism to accommodate the changing start and end times of the mechanical cam's movement. This adjustment relies solely on directional guidance, lacking numerical support. Repeated adjustments of the faceplate and measurements with the produced screws are necessary to complete the adjustment process. This makes each change in screw type and length a complex physical and technical undertaking. Summary of the Invention

[0003] In view of this, the present invention provides an intelligent CNC ejection mechanism for a heading machine to solve the above problems.

[0004] A smart CNC ejection mechanism for a heading machine includes a drive assembly, a linkage assembly disposed at the output end of the drive assembly, and an impact assembly disposed at the output end of the linkage assembly. The drive assembly includes a servo motor and a reducer disposed at the output end of the servo motor. The linkage assembly includes an eccentric wheel disposed at the output end of the drive assembly, a connecting rod sleeved on the eccentric wheel, and a swing arm shaft rotatably connected to the end of the connecting rod away from the eccentric wheel. The impact assembly includes a guide rail, a slider slidably disposed on the guide rail, and an impact block fixedly disposed on one side of the slider. An impact rod is disposed on the side of the impact block facing the impact rod. A roller is disposed at the end of the swing arm shaft away from the connecting rod. A groove is formed on the impact block near the swing arm shaft, and the roller is engaged in the groove and in clearance contact with the two inner sidewalls of the groove.

[0005] Furthermore, the guide rail is fixedly mounted on the body of the heading machine, and its length direction is parallel to the arrangement direction of the impact block and the impact rod.

[0006] Furthermore, the outer circumferential wall of the eccentric wheel makes rotational clearance contact with the inner circumferential wall of the connecting rod end.

[0007] Furthermore, the length direction of the groove is perpendicular to the length direction of the guide rail.

[0008] Furthermore, the stopping position of the impact rod is the position where the impact rod and the impact rod abut against each other.

[0009] Furthermore, the stopping position of the impact rod is determined by a PLC control program.

[0010] Compared with the prior art, the intelligent CNC ejection mechanism for the heading machine provided by this utility model is driven by the servo motor to drive the impact rod for impact ejection. During machine adjustment and line change operations, the operator only needs to input the desired screw length L0 on the control screen, and the PLC control program can calculate the rotation α° of the servo motor as α° = L0 * 360 / L. max The machine pauses at certain times, and at the position where the servo motor stops rotating, the impact rod is adjusted to a position where it abuts against the impact rod 35, and then the impact operation is performed. The entire adjustment process is convenient and quick, requiring no large amount of physical labor or debugging experience. Attached Figure Description

[0011] Figure 1 A schematic diagram of the intelligent CNC ejection mechanism for a heading machine provided by this utility model.

[0012] Figure 2 for Figure 1 A simplified comparison diagram of screws of different lengths produced by a heading machine using an intelligent CNC ejection mechanism. Detailed Implementation

[0013] The specific embodiments of this utility model are described in further detail below. It should be understood that the description of the embodiments of this utility model herein is not intended to limit the scope of protection of this utility model.

[0014] like Figure 1 The diagram shown is a structural schematic of the intelligent CNC ejection mechanism for a heading machine provided by this utility model. The intelligent CNC ejection mechanism for a heading machine includes a drive assembly 10, a connecting rod assembly 20 disposed at the output end of the drive assembly 10, and an impact assembly 30 disposed at the output end of the connecting rod assembly 20. It is conceivable that the intelligent CNC ejection mechanism for a heading machine also includes other functional modules, such as a power supply module, a control module, etc., which are known to those skilled in the art and will not be described in detail here.

[0015] The drive assembly 10 includes a servo motor 11 and a reducer 12 disposed at the output end of the servo motor 11.

[0016] The servo motor 11 serves as the power source, primarily generating kinetic energy which is then transmitted to the impact assembly 30 via the connecting rod assembly 20. The PLC control program regulates the rotor's rotation angle and speed, thereby enabling the impact rod on the impact heading machine to eject the screw from the die through the connecting rod assembly 20 and the impact assembly 30. The reducer 12 increases the output shaft torque through a reduction ratio, amplifying the power of the servo motor 11 and reducing energy consumption to meet the high torque requirements of heavy-duty equipment. The servo motor 11 and the reducer 12 are existing technologies and will not be described further here.

[0017] It should be noted that the impact rod on the heading machine is existing technology. Its specific working principle can be found in Chinese Patent CN202021936368.6, which discloses a mold cavity ejection device for a heading machine.

[0018] The linkage assembly 20 includes an eccentric wheel 21 disposed at the output end of the drive assembly 10, a connecting rod 22 sleeved on the eccentric wheel 21, and a swing arm shaft 23 rotatably connected to the end of the connecting rod 22 away from the eccentric wheel 21.

[0019] The eccentric wheel 21 is driven to rotate by the drive assembly 10. Its outer circumferential wall makes rotational contact with the inner circumferential wall of the end of the connecting rod 22. Thus, the rotation of the eccentric wheel 21 can drive the connecting rod 22 to reciprocate and pull the end of the swing arm shaft 23 that is rotatably connected to the connecting rod 22.

[0020] A roller 24 is provided at the end of the swing arm shaft 23 away from the connecting rod 22. The roller 24 is connected to the impact assembly 30 to transmit power to the impact assembly 30. The specific connection will be described below.

[0021] The middle section of the swing arm shaft 23 is rotatably connected to the body of the heading machine, so that when the connecting rod 22 reciprocates to pull the swing arm shaft 23, the swing arm shaft 23 will swing around its middle section.

[0022] The impact assembly 30 includes a guide rail 31, a slider 32 slidably disposed on the guide rail 31, and an impact block 33 fixedly disposed on one side of the slider 32.

[0023] The guide rail 31 is fixedly mounted on the body of the heading machine, and its length direction is parallel to the arrangement direction of the impact block 33 and the impact rod.

[0024] The impact block 33 has a groove 34 near the swing arm shaft 23, and the length direction of the groove 34 is perpendicular to the length direction of the guide rail 31. The roller 24 is engaged in the groove 34 and makes gap contact with the two inner sidewalls of the groove 34.

[0025] An impact rod 35 is provided on the side of the impact block 33 facing the impact rod, and the impact rod 35 corresponds to the impact rod.

[0026] When the roller 24 swings with the swing arm shaft 23, the roller 24 will drive the impact block 33 to reciprocate. Since the impact block 33 is fixedly mounted on the slider 32, the impact rod 35 on the impact block 33 will reciprocate in the direction of the impact rod, thereby completing the reciprocating impact action.

[0027] The working principle of the intelligent CNC ejection mechanism for the heading machine is explained in detail below:

[0028] The servo motor 11 amplifies its power through the reducer 12 and drives the eccentric wheel 21 to rotate, causing the connecting rod 22 to complete the cyclical changes between long and short ranges. The swing arm shaft 23 achieves swinging operation through the pull of the connecting rod 22, and drives the impact block 33 to reciprocate along the length direction of the guide rail 31 through the roller 24, thereby realizing that the impact rod 35 on the impact block 33 impacts the impact rod to complete the material ejection operation of the heading machine. It should be noted that the impact rod 35 needs to pause when it is about to contact the impact rod to prevent the impact rod 35 from directly impacting the impact rod and causing abnormal noise or damage to the internal parts of the machine due to the vibration caused by the impact.

[0029] Please see Figure 2 Since the travel distance of the impact rod 35 is fixed, it reaches its maximum travel distance each time, precisely positioning the impact rod at the discharge port of the heading machine to complete the ejection operation. Therefore, when adjusting the length of the production screw, the position of the impact rod must be adjusted first. The position of the impact rod can be adjusted by the position where the impact rod 35 pauses under the drive of the servo motor 11. This can be achieved by loosening the fixing screws on the device with the impact rod, pausing the servo motor 11 at the initial ejection length position, then engaging the impact rod 35 with the heading rod, and locking the device with the impact rod in place. This ensures that the servo motor 11 drives and pulls the impact rod 35 to this position, where it pauses before resuming the impact operation to eject the screw.

[0030] For example: the servo motor 11 rotates 360° in one revolution, and the impact rod 35 completes a round trip of distance L. maxWhen a screw of length L0 needs to be produced, the operator only needs to input L0 into the control screen, and the PLC control program will use the formula L0=α*L written in the control program. max By calculating / 360, we can determine that the servo motor 11 needs to rotate α° to pause, thus α = L0 * 360 / L max During debugging, the operator only needs to adjust the impact rod to a position where it abuts against the impact rod 35 at the first pause position of the servo motor 11 rotation. Then, during production, the impact rod 35 will pause after each contact with the impact rod before the impact and ejection operation is performed.

[0031] Compared with the prior art, the intelligent CNC ejection mechanism for the heading machine provided by this utility model is driven by the servo motor 11 and drives the impact rod 35 to perform impact ejection operation. During machine adjustment and line change operations, the commissioning operator only needs to input the length L0 of the screw to be produced on the control screen, and the PLC control program can calculate the rotation α° of the servo motor 11 as α° = L0 * 360 / L. max The machine pauses at certain times, and at the position where the servo motor 11 stops rotating, the impact rod is adjusted to a position where it abuts against the impact rod 35, and then the impact operation is performed. The entire adjustment process is convenient and quick, requiring no large amount of physical labor or debugging experience.

[0032] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Any modifications, equivalent substitutions or improvements within the spirit of the present utility model are covered within the scope of the claims of the present utility model.

Claims

1. An intelligent CNC ejection mechanism for a heading machine, characterized in that: The intelligent CNC ejection mechanism for the heading machine includes a drive assembly, a linkage assembly disposed at the output end of the drive assembly, and an impact assembly disposed at the output end of the linkage assembly. The drive assembly includes a servo motor and a reducer disposed at the output end of the servo motor. The linkage assembly includes an eccentric wheel disposed at the output end of the drive assembly, a connecting rod sleeved on the eccentric wheel, and a swing arm shaft rotatably connected to the end of the connecting rod away from the eccentric wheel. The impact assembly includes a guide rail, a slider slidably disposed on the guide rail, and an impact block fixedly disposed on one side of the slider. An impact rod is disposed on the side of the impact block facing the impact rod. A roller is disposed at the end of the swing arm shaft away from the connecting rod. A groove is formed on the impact block near the swing arm shaft, and the roller is engaged in the groove and makes clearance contact with the two inner sidewalls of the groove.

2. The intelligent CNC ejection mechanism for a heading machine according to claim 1, characterized in that: The guide rail is fixedly mounted on the body of the heading machine, and its length direction is parallel to the arrangement direction of the impact block and the impact rod.

3. The intelligent CNC ejection mechanism for a heading machine according to claim 1, characterized in that: The outer circumferential wall of the eccentric wheel makes rotational clearance contact with the inner circumferential wall of the connecting rod end.

4. The intelligent CNC ejection mechanism for a heading machine according to claim 1, characterized in that: The length direction of the groove is perpendicular to the length direction of the guide rail.

5. The intelligent CNC ejection mechanism for a heading machine according to claim 1, characterized in that: The stopping position of the impact rod is the position where the impact rod and the impact rod abut against each other.

6. The intelligent CNC ejection mechanism for a heading machine according to claim 1, characterized in that: The stopping position of the impact rod is determined by the PLC control program.

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