Intelligent numerical control ejection mechanism for heading machine

Abstract

An intelligent numerical control ejection mechanism for a heading machine comprises a driving assembly, a connecting rod assembly and an impact assembly. The driving assembly comprises a servo motor and a speed reducer. The connecting rod assembly comprises an eccentric wheel, a connecting rod and a swing arm shaft. The impact assembly comprises a guide rail, a sliding block and an impact block. A roller is arranged at the end, away from the connecting rod, of the swing arm shaft, and a sliding groove is formed in the position, close to the swing arm shaft, of the impact block. According to the mechanism, the servo motor drives and drives the impact rod to carry out impact ejection operation, when machine adjusting and line changing operation is carried out, a debugger only needs to input the length L0 of a screw to be produced on a control screen, a PLC control program can obtain that the servo motor pauses when rotating by alpha degrees = L0 * 360 / Lmax, and the screw length L0 of the screw to be produced can be adjusted. The impact rod is adjusted to the position where the impact rod abuts against the impact rod 35 at the rotation pause position of the servo motor, then impact operation is carried out, the whole machine adjusting process is convenient and fast, and a large amount of physical operation and debugging experience are not needed.

Description

Technical Field

[0001] The present invention relates to the technical field of screw manufacturing and processing, and particularly to an intelligent numerical control ejection mechanism for a header machine. Background Art

[0002] The traditional ejection mechanism of a header machine realizes the change of the product length by adjusting the ejection point radius of the swing arm; the change of the length will also cause the change of the start and end times of the ejection. The traditional ejection mechanism of a header machine has only one driving motor. When adjusting the line, the debugger needs to adjust the faceplate in the ejection mechanism to adapt to the start time and end time of the mechanical cam movement due to the length change. The above adjustment only has directional guidance and no numerical assistance. It is necessary to repeatedly adjust the faceplate in the mechanism and repeatedly measure the products produced during debugging to complete the machine adjustment work. This makes each screw variety change and the machine adjustment operation for the length of the produced screws a complex physical and technical work. Summary of the Invention

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

[0004] An intelligent numerical control ejection mechanism for a header machine includes a driving assembly, a connecting rod assembly disposed at the output end of the driving assembly, and an impact assembly disposed at the output end of the connecting rod assembly. The driving assembly includes a servo motor and a speed reducer disposed at the output end of the servo motor. The connecting rod assembly includes an eccentric wheel disposed at the output end of the driving assembly, a connecting rod sleeved on the eccentric wheel, and a swing arm shaft rotatably connected to one 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. A roller is disposed at one end of the swing arm shaft away from the connecting rod, and a chute is formed at a position of the impact block close to the swing arm shaft. The roller is clamped in the chute and is in clearance contact with the two inner side walls of the chute.

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

[0006] Further, there is a rotational clearance contact between the circumferential outer side wall of the eccentric wheel and the circumferential inner side wall of the end of the connecting rod.

[0007] Further, the length direction of the chute is perpendicular to the length direction of the guide rail.

[0008] Further, the angle of one full rotation of the servo motor 11 is 360°, and the moving distance of the impact rod for one round trip is L. max , and the debugger inputs the length L0 of the required product on the control panel and produces the product with the required length L0.

[0009] Further, the servo motor 11 pauses when rotating by α°, where α = L0 * 360 / L max .

[0010] Compared with the prior art, the intelligent numerical control ejection mechanism for the header machine provided by the present invention is driven by the servo motor to drive the impact rod to perform impact ejection operation. When performing machine adjustment and line change operations, the debugger only needs to input the length L0 of the screw to be produced on the control screen, and the PLC control program can obtain that the servo motor pauses when rotating by α° = L0 * 360 / L max . At the position where the servo motor rotates and pauses, the impact rod is adjusted to a position where it abuts against the impact rod 34, and then the impact operation is performed. The entire machine adjustment process is convenient and fast, without the need for a large amount of physical work and debugging experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 FIG. is a schematic structural diagram of the intelligent numerical control ejection mechanism for the header machine provided by the present invention.

[0012] Figure 2 is Figure 1 a simple comparison diagram of the intelligent numerical control ejection mechanism for the header machine producing screws of different lengths. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] The following further details the specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the protection scope of the present invention.

[0014] As Figure 1 shown, it is a schematic structural diagram of the intelligent numerical control ejection mechanism for the header machine provided by the present invention. The intelligent numerical control ejection mechanism for the header machine includes a driving assembly 10, a connecting rod assembly 20 disposed at the output end of the driving assembly 10, and an impact assembly 30 disposed at the output end of the connecting rod assembly 20. It can be imagined that the intelligent numerical control ejection mechanism for the header machine further includes some other functional modules, such as a power module, a control module, etc., which are well-known technologies to those skilled in the art and will not be elaborated herein one by one.

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

[0016] The servo motor 11 serves as the power source. Its main function is to generate kinetic energy and transmit it to the impact component 30 through the connecting rod assembly 20, and the angle and speed of the rotor rotation are controlled by the PLC control program, so as to realize the function of the impact rod on the impact heading machine to eject the screw that has completed the punching die through the connecting rod assembly 20 and the impact component 30. The speed reducer 12 increases the torque of the output shaft through the reduction ratio, amplifies the power of the servo motor 11, and reduces energy consumption to meet the high torque requirements of heavy-duty equipment. The servo motor 11 and the speed reducer 12 are existing technologies and will not be elaborated here.

[0017] It should be noted that the impact rod on the heading machine is an existing technology, and its specific working principle can refer to a die cavity ejection device of a heading machine disclosed in Chinese Patent CN202021936368.6.

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

[0019] The eccentric wheel 21 is driven by the driving assembly 10 to rotate, and the circumferential outer wall of its circumference is in rotational clearance contact with the circumferential inner wall of the end of the connecting rod 22. In this way, 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 rotatably connected to the connecting rod 22.

[0020] One end of the swing arm shaft 23 away from the connecting rod 22 is provided with a roller 24, and the roller 24 is connected to the impact component 30 to transmit power to the impact component 30. Its specific connection situation will be described below.

[0021] The middle section of the swing arm shaft 23 is rotatably connected to the fuselage of the heading machine. In this way, when the connecting rod 22 reciprocally pulls the swing arm shaft 23, the swing arm shaft 23 will swing around its middle section.

[0022] The impact component 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 disposed on the fuselage of the heading machine, and its length direction is parallel to the arrangement direction of the impact block 33 and the impact rod.

[0024] A chute 34 is provided at a position of the impact block 33 close to the swing arm shaft 23, and the length direction of the chute 34 is perpendicular to the length direction of the guide rail 31. The roller 24 is clamped in the chute 34 and is in clearance contact with the two inner side walls of the chute 34.

[0025] One side of the impact block 33 facing the impact rod is provided with an impact rod 35, and the impact rod 35 corresponds to the impact rod.

[0026] When the roller 24 swings along with the swing arm shaft 23, the roller 24 drives the impact block 33 to move reciprocally. Since the impact block 33 is fixedly arranged on the slider 32, the impact rod 35 on the impact block 33 moves reciprocally towards the direction of the impact rod, thereby completing the reciprocating impact action.

[0027] The working principle of the intelligent numerical control ejection mechanism for the heading machine is described in detail below:

[0028] The servo motor 11 amplifies its own power through the speed reducer 12 and drives the eccentric wheel 21 to rotate, so that the connecting rod 22 completes the periodic change of remote and short-range. The swing arm shaft 23 realizes the swinging operation through the pulling of the connecting rod 22, and drives the impact block 33 to move reciprocally along the length direction of the guide rail 31 through the roller 24, thereby realizing the impact rod 34 on the impact block 33 to impact the impact rod to complete the blanking 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 to generate abnormal noise or damage the components inside the machine due to the vibration generated by the impact.

[0029] Please refer to Figure 2 , since the moving stroke of the impact rod 35 is fixed, after each reaching the maximum stroke, the impact rod is just pushed to the blanking port position of the heading machine to complete the blanking operation. Therefore, when it is necessary to adjust the length of the production screw, the position of the impact rod needs to be adjusted first, and 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. Thus, only need to loosen the fixing screw on the device where the impact rod is installed, pause when the servo motor 11 rotates to the initial position of the ejection length, then abut the impact rod 34 against the impact rod, and lock the device where the impact rod is fixedly installed, so that the servo motor 11 drives and drives the impact rod 34 to pause when reaching this position, and then perform the impact operation to eject the screw.

[0030] Example: The angle of one rotation of the servo motor 11 is 360°, and the moving distance of the impact rod 34 for a round trip is L max, when it is necessary to produce screws with a length of L0, the debugger only needs to input L0 on the control screen, and the PLC control program will calculate according to the formula L0 = α * L written in the control program max / 360, and then it can be obtained that the servo motor 11 needs to rotate α° and pause, and α = L0 * 360 / L can be calculated max . When the debugger is debugging, he only needs to adjust the impact rod to the position where it abuts against the impact rod 34 at the position where the servo motor 11 rotates and pauses for the first time. Then, during the production operation, the impact rod 34 will pause every time it abuts against the impact rod, and then perform the impact and ejecting operation.

[0031] Compared with the prior art, the intelligent numerical control ejection mechanism for the header machine provided by the present invention drives the impact rod 34 to perform the impact and ejection operation through the servo motor 11. When performing the machine adjustment and line change operation, the debugger only needs to input the length L0 of the screws to be produced on the control screen, and the PLC control program can calculate that the servo motor 11 pauses when rotating α° = L0 * 360 / L max . At the position where the servo motor 11 rotates and pauses, the impact rod is adjusted to the position where it abuts against the impact rod 34, and then the impact operation is performed. The whole machine adjustment process is convenient and fast, without a large amount of physical work and debugging experience.

[0032] The above is only a preferred embodiment of the present invention, and is not used to limit the protection scope of the present invention. Any modifications, equivalent replacements or improvements within the spirit of the present invention are all covered by the claims of the present invention.

Claims

1. An intelligent numerical control ejection mechanism for a heading machine, characterized in that: The intelligent numerical control ejection mechanism for the header machine includes a driving assembly, a connecting rod assembly disposed at the output end of the driving assembly, and an impact assembly disposed at the output end of the connecting rod assembly. The driving assembly includes a servo motor and a speed reducer disposed at the output end of the servo motor. The connecting rod assembly includes an eccentric wheel disposed at the output end of the driving 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. A roller is disposed at the end of the swing arm shaft away from the connecting rod. A chute is formed at a position of the impact block close to the swing arm shaft. The roller is clamped in the chute and is in clearance contact with the two inner side walls of the chute.

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

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

4. The intelligent numerical control ejection mechanism for a header machine according to claim 1, characterized in that: The length direction of the chute is perpendicular to the length direction of the guide rail.

5. The intelligent numerical control ejection mechanism for a header machine according to claim 1, characterized in that: The angle of one full rotation of the servo motor 11 is 360°, and the moving distance of the impact rod for a round trip is L max , and the debugger inputs the length L0 of the required product on the control panel and produces a product with the required length L0.

6. The intelligent numerical control ejection mechanism for a header machine according to claim 5, characterized in that: The servo motor 11 pauses after rotating by α°, where α = L0 * 360 / L max .

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