Automatic marking machine

Abstract

The invention discloses an automatic marking machine in the technical field of laser marking, the automatic marking machine comprises a machine base and a marking part, a fixed part and a movable part are arranged at the top of the machine base, and the fixed part and the movable part each comprise a base plate, limiting seats arranged on the two sides of the base plate in a sliding mode and adjusting parts matched with the limiting seats; the adjusting part comprises a transmission rod, two sides of the transmission rod are respectively provided with a movable rack and a fixed rack, the top end of the transmission rod is rotatably connected with a driving gear, and the driving gear is meshed with the movable rack and the fixed rack on two sides; the limiting seat is a right-angled isosceles triangle; a synchronous frame is fixedly connected to the top end of the movable rack and used for connecting the marking component and the rotating component. The height of the marking head is automatically adjusted according to the thickness of the loaded workpiece, the focal length does not need to be adjusted, direct marking can be achieved, the adjusting time is greatly shortened, and flexibility and accuracy are achieved; the upper surface of the workpiece can be greatly exposed, and marking can be conducted at the end.

Description

Technical Field

[0001] The invention relates to the technical field of laser marking, in particular to an automatic marking machine. Background Art

[0002] Laser marking is a device that uses a laser beam to permanently mark the surface of various materials. After the workpiece is processed, a laser marking machine is usually used to engrave the workpiece's relevant parameters and trademarks on the surface of the workpiece.

[0003] There are two marking methods for cylindrical workpieces, one is horizontal marking along the axis direction, and the other is cylindrical surface marking rotating around the axis. Because it is a cylindrical workpiece, no matter which marking method is used, the workpiece needs to be clamped before processing. The existing clamping method generally clamps with the axis as the center of the circle. If workpieces of different thicknesses are processed, the distance between the marking head and the workpiece surface will change, and then the focal length needs to be adjusted according to the diameter of the clamped workpiece to print clear characters. This process is time-consuming and labor-intensive, and requires multiple adjustments and experiments, which is time-consuming and material-consuming; and this process must use a fixture or jig, which results in only a partial surface exposure of the cylindrical product, and the clamping point cannot be marked, and it cannot be fully marked.

[0004] Based on this, the present invention designs an automatic marking machine to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic marking machine to solve the problem proposed in the above background technology that processing workpieces of different thicknesses will cause the distance between the marking head and the workpiece surface to change, and then the focal length needs to be adjusted according to the diameter of the clamped workpiece in order to mark clear characters. This process is time-consuming and labor-intensive, and requires multiple adjustments and experiments, which is time-consuming and material-consuming.

[0006] To achieve the above object, the present invention provides the following technical solutions: a machine base and a marking component, wherein a fixed part and a movable part are provided on the top of the machine base, and the fixed part and the movable part both include a pad and a limit seat slidably provided on both sides of the pad and an adjustment part matched with the limit seat; The adjustment part comprises a transmission rod, and a movable rack and a fixed rack are respectively arranged on both sides of the transmission rod. The top end of the transmission rod is rotatably connected to a driving gear, and the driving gear is meshed with the movable rack and the fixed rack on both sides thereof; The pad is used to place the workpiece, and the limit seat is a right-angled isosceles triangle, the straight side is used to limit the workpiece, and the oblique side is used to cooperate with the transfer rod to lift it up and drive the moving rack to move upward; The top end of the movable rack is fixedly connected with a synchronous frame, and the synchronous frame is used to connect the marking component and the rotating component, and the rotating component is used to drive the workpiece to rotate.

[0007] As a further solution of the present invention, a raising plate is fixedly connected to the middle part of the pad, the middle part of the limit seat is hollowed out, and the raising plate is located at the hollow part in the middle part of the limit seat and the two are slidably matched, a positioning rod is installed in the pad of the fixed part, the positioning rod passes through the pad of the moving part and cooperates with it, the positioning rod is a smooth rod or a threaded rod, and the rear side of the pad of the fixed part is fixedly connected to the end plate.

[0008] As a further solution of the present invention, the rotating component includes a driving frame, both sides of the driving frame are rotatably connected with adaptation arms, the middle part of the driving frame is slidably connected with a tensioning wheel, and a driving belt is commonly provided between the tensioning wheel and the pulleys at both ends of the adaptation arm. The driving frame moves downward so that the driving belt is wrapped around the surface of the workpiece to rub the workpiece for rotation.

[0009] As a further solution of the present invention, a slide groove is opened inside the driving frame, the top end of the wheel frame of the tensioning wheel is slidably connected in the slide groove, an adaptive spring is installed between the wheel frame of the tensioning wheel and the driving frame, and an electromagnet is fixedly installed on the top of the wheel frame of the tensioning wheel. After the electromagnet is energized, it can be adsorbed and fixed in the driving frame, and the driving frame can enter the hollow part of the limit seat.

[0010] As a further solution of the present invention, the marking component includes a transverse base, a marking head is slidably installed in the transverse base, a fine-tuning cylinder is installed in the middle of the synchronous frame, the bottom end of the fine-tuning cylinder of the movable part is slidably connected to the transverse base, and a lifting cylinder is also fixedly installed on the side of the synchronous frame, and the lifting cylinder is used to connect the rotating component.

[0011] As a further solution of the present invention, a transfer frame is fixedly connected to the bottom of the lifting cylinder, and yield screws are installed on both sides of the interior of the transfer frame. The yield screws pass through the driving frame of the rotating component and are threadedly matched therewith.

[0012] As a further solution of the present invention, a side frame is fixedly installed on the top of the machine base, and a movable frame and a fixed frame are provided on the inner side of the side frame. The movable frame and the fixed frame both include a multi-rod frame, which is fixedly connected to a fixed rack and has a sliding sleeve and a guide sleeve fixedly connected on the inner side. The transfer rod is slidably connected in the sliding sleeve, and a lifting cylinder is slidably provided in the guide sleeve.

[0013] As a further solution of the present invention, the fixed frame is fixed on the inner side of the side frame, and a movable slide rod is provided on the inner side of the side frame. The movable slide rod passes through the movable frame and slides with it. The transfer rod is located on one side of the limit seat, and an extension platform is fixedly connected to one side of the limit seat. The transfer rod is located on the top of the extension platform and slides with it.

[0014] As a further solution of the present invention, there are limit rods slidably connected on both sides of the base, and a slide is fixedly connected to the bottom of the limit seat of the movable part. The slide is sleeved outside the limit rod and slidably cooperates with the limit rod. A bidirectional lead screw is installed in the middle of the base, and both ends of the bidirectional lead screw pass through the limit rod and threadedly cooperate with the limit rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The height of the marking head is automatically adjusted according to the thickness of the workpiece, and there is no need to adjust the focal length. After loading workpieces of different thicknesses, marking can be done directly, which greatly reduces the adjustment time. It also changes automatically with the thickness of the workpiece, which is more flexible and accurate.

[0016] The drive belt rotates in a circular motion, thereby rubbing the workpiece to rotate. This method can adapt to the driven rotation of workpieces of various thicknesses and is easy to control and adjust. Rotation by rubbing the upper surface will not cause the rotation axis to deviate, thereby making the marking code clear and consistent.

[0017] When the workpiece is fixed by the limit seat, the upper surface of the workpiece can be largely exposed, and the top is unobstructed. Even at the limit seat, it can be marked. It can mark at the end without being affected by clamping and loading. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the internal structure of the present invention; Figure 2 This is a schematic diagram of the initial state of the internal structure of the present invention; Figure 3 This is a schematic diagram of the clamping state of the internal structure of the present invention; Figure 4 It is a schematic diagram of the internal structure of the present invention in use state; Figure 5 This is a schematic diagram of the motion principle of the adjustment part of the present invention; Figure 6 It is a schematic diagram of the overall structure of the present invention from a front perspective; Figure 7 It is a schematic diagram of a half-section structure of the overall structure of the present invention from a rear side perspective; Figure 8 It is a schematic diagram of the overall structure of the present invention from a rear side perspective; Fig. 9 It is a schematic diagram of the overall structure of the present invention from a bottom-up perspective.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Machine base; 2. Pad; 3. Limit seat; 4. Transfer rod; 5. Moving rack; 6. Fixed rack; 7. Driving gear; 8. Synchronous frame; 9. Heightening plate; 10. Positioning rod; 11. End plate; 12. Driving frame; 13. Adaptive arm; 14. Tensioning wheel; 15. Driving belt; 16. Adaptive spring; 17. Electromagnet; 18. Wheel frame; 19. Horizontal base; 20. Marking head; 21. Fine adjustment cylinder; 22. Lifting cylinder; 23. Transfer frame; 24. Give way screw; 25. Side frame; 26. Mobile frame; 27. Fixed frame; 28. Multi-rod frame; 29. ​​Sliding sleeve; 30. Guide sleeve; 31. Moving slide rod; 32. Extension table; 33. Limit rod; 34. Slide table; 35. Bidirectional screw. DETAILED DESCRIPTION

[0020] See also Figure 1-9 The working principle of the technical solution provided by the present invention is as follows: The initial state of the device is Figure 2 As shown, the bottom of the driving belt 15 is in contact with the bottom of the pad 2, and the limit seats 3 on both sides are also in contact. At this time, the distance between the marking head 20 and the top surface of the pad 9 just meets the focal length of the laser marking. The marking focal length is set to D. When adjusting the focal length during the initial installation, the height of the synchronization frame 8 can be changed by changing the length of the transmission rod 4, thereby changing the distance between the marking head 20 and the pad 9 to achieve focal length adjustment. After adjustment, it can be used in the initial state.

[0021] When in use, pull open the limit seats 3 on both sides and place the cylindrical workpiece to be marked. On the pad plate 9, the upper limit seat 3 is then closed to hold the workpiece inside. At this time, the right-angled side of the limit seat 3 is tangent to the outer diameter of the workpiece, that is, the limit seat 3 is equivalent to moving outward a radius R of the clamped workpiece in the initial state. At the same time, the limit seat 3 pushes the transfer rod 4 upward by its hypotenuse to a height of H. Since the limit seat 3 is a right-angled isosceles triangle, H=R, and the transfer rod 4 moves upward. With the cooperation of the fixed rack 6, the driving gear 7 at the end of the transfer rod 4 moves upward while rotating, thereby causing the meshing movable rack 5 to move upward by a distance of 2*R (since the height of the transfer rod 4 moving upward is R, the linear distance of the driving gear 7 rotation is also R, and the rotation radius of the driving gear 7 relative to the movable rack 5 is twice that of the fixed rack 6, so the movable rack 5 moves upward by a distance of 2*R, and the moving speed of the movable rack 5 It is also twice the moving speed of the transfer rod 4. Therefore, the upward moving distance of the synchronous frame 8 is 2*R, that is, the height of the diameter of the clamped workpiece. This makes it possible that no matter how thick the workpiece is, the upward moving distance of the synchronous frame 8 is the diameter of the workpiece, that is, 2*R. This also makes the marking head 20 rise by 2*R after the workpiece is loaded, and the distance between the marking head 20 and the workpiece surface is always D. The height of the marking head 20 is automatically adjusted according to the thickness of the workpiece loaded, and there is no need to adjust the focal length. After loading workpieces of different thicknesses, marking can be done directly, which greatly reduces the adjustment time. Moreover, it changes automatically with the thickness of the workpiece, which is more flexible and accurate.

[0022] like Figure 3 As shown, the synchronous frame 8 is connected to the marking head 20 through the transverse base 19 and is connected to the driving frame 12 through the lifting cylinder 22. Therefore, when the marking head 20 is raised following the clamping of the workpiece, the driving belt 15 also moves upward to the same height. After the workpiece is loaded, the bottom of the driving belt 15 is tangent to the surface of the workpiece, thereby reducing the adjustment time of the driving frame 12, improving the processing speed, and facilitating the precise control of the subsequent downward movement of the driving frame 12.

[0023] like Figure 4 As shown, when rotary marking is required and the code is marked around the workpiece, the drive frame 12 is moved down, so that the drive belt 15 moves down and is pressed on the surface of the workpiece, thereby pulling the adaptation arm 13 of the training car to rotate and tighten, and the tensioning wheel 14 moves up, and the drive belt 15 is wrapped around the surface of the workpiece. When the pulley in the adaptation arm 13 is driven to rotate, it drives the drive belt 15 to rotate in a circle, thereby rubbing the workpiece to rotate. This method can adapt to the driven rotation of workpieces of various thicknesses and is easy to control and adjust. Under the restrictions of the raising plate 9 and the limit seat 3, the rotation by rubbing the upper surface will not cause the problem of deviation of the rotation axis, thereby making the marked code clear and consistent.

[0024] Specifically, for workpieces of different lengths, the distance between the pad 2 of the moving part and the pad 2 of the fixed part can be adjusted by directly moving the pad 2 of the moving part. When the pad 2 is moved, the limit seat 3 is also driven to move together under the action of the raising plate 9. At the same time, through the sliding cooperation between the transmission rod 4 and the limit seat 3 and the connection between the moving frame 26 and the moving rack 5, the fixed rack 6 and the transmission rod 4, the components of the moving part and the components on the moving frame 26 are driven to move together, and the choice is made to be close to or away from the fixed part, thereby adapting to the marking production of workpieces of different lengths; when moving the pad 2, if the positioning rod 10 is selected as a threaded rod, the positioning rod 10 can be driven to rotate to drive the pad 2 of the moving part to move; if the positioning rod 10 is selected as a bare rod, it can be directly pushed and then fixed by bolts or other means.

[0025] The movable frame 26 can keep the movable rack 5, the fixed rack 6 and the transfer rod 4 installed while allowing these components to be moved together; when the movable frame 26 moves, the movable slide bar 31 slides, and then it can be fixed by tightening bolts or other means. If the movable slide bar 31 is a screw rod, it can directly drive the movable frame 26 to move without the need for fixing.

[0026] When the pad 2 moves, the slide 34 of the limit seat 3 slides on the limit rod 33, thereby adapting to the moving distance of the pad 2; the limit seat 3 is pulled to both sides to clamp the workpiece, and the two-way screw 35 can be rotated to synchronously drive the limit seats 3 on both sides to move synchronously and at the same distance. At this time, the limit rod 33 moves laterally relative to the machine base 1, which can drive the limit seats 3 at both ends to move at the same time, simplifying the adjustment; when placing the workpiece, one end of the workpiece can be pushed to a position that is attached to the end plate 11, thereby making the clamping position of the workpiece consistent, thereby maintaining the consistency of the position of the marking code.

[0027] Specifically, if rotational marking is not required but only lateral marking is required, the lateral base 19 can be used to drive the marking head 20 to move and achieve lateral marking. At this time, the driving frame 12 can be lifted up by connecting the lifting cylinder 22, so that the driving belt 15 leaves the limiting seat 3, and then the driving frame 12 is retracted and located outside the limiting seat 3 by connecting the yielding screw 24. At this time, when the limiting seat 3 fixes the workpiece, the upper surface of the workpiece can be largely exposed, and the top is unobstructed. Even at the limiting seat 3, it can be marked, and marking can be done at the end without being affected by clamping and loading. If rotation and marking at the end are required, the drive frame 12 at the end to be marked can be folded up, and the drive frame 12 on the other side can be moved down, and one end of the workpiece can be driven to rotate through the drive belt 15, thereby realizing the marking of the rotating end at the other end. It can adapt to various marking needs and is flexible and easy to operate.

[0028] After a period of use, if the marking head 20 needs slight adjustment, the fine adjustment cylinder 21 can be used to drive the lateral base 19 to move up and down, thereby adapting to the marking of a declining marking head or other workpieces with a cutting platform in the middle and cylindrical at both ends, thereby improving the application range of the entire machine.

Claims

1. An automatic marking machine, comprising a machine base (1) and a marking component, characterized in that: The top of the machine base (1) is provided with a fixed part and a movable part, and the fixed part and the movable part both comprise a pad (2), a limit seat (3) slidably provided on both sides of the pad (2), and an adjustment part matching the limit seat (3); The adjustment part comprises a transmission rod (4), with a movable rack (5) and a fixed rack (6) respectively provided on both sides of the transmission rod (4), a driving gear (7) being rotatably connected to the top end of the transmission rod (4), and the driving gear (7) being meshed with the movable rack (5) and the fixed rack (6) on both sides thereof; The pad (2) is used to place the workpiece, and the limiting seat (3) is a right-angled isosceles triangle, the straight side is used to limit the workpiece, and the oblique side is used to cooperate with the transfer rod (4) to lift it up and drive the moving rack (5) to move upward; The top end of the movable rack (5) is fixedly connected to a synchronous frame (8), the synchronous frame (8) is used to connect a marking component and a rotating component, and the rotating component is used to drive the workpiece to rotate.

2. The automatic marking machine according to claim 1, characterized in that: A padding plate (9) is fixedly connected to the middle of the padding plate (2); the middle of the limiting seat (3) is hollowed out, and the padding plate (9) is located at the hollowed-out middle of the limiting seat (3) and the two are slidably matched; a positioning rod (10) is installed in the padding plate (2) of the fixed part, and the positioning rod (10) passes through the padding plate (2) of the movable part and cooperates therewith; the positioning rod (10) is a smooth rod or a threaded rod; and a terminal plate (11) is fixedly connected to the rear side of the padding plate (2) of the fixed part.

3. The automatic marking machine according to claim 1, characterized in that: The rotating component comprises a driving frame (12), both sides of the driving frame (12) are rotatably connected to adaptable arms (13), a tensioning wheel (14) is slidably connected to the middle of the driving frame (12), a driving belt (15) is sleeved between the tensioning wheel (14) and the pulleys at both ends of the adaptable arms (13), and the driving frame (12) moves downward so that the driving belt (15) is wrapped around the surface of the workpiece to rub the workpiece for rotation.

4. The automatic marking machine according to claim 3, characterized in that: A slide groove is provided inside the driving frame (12), and the top of the wheel frame (18) of the tensioning wheel (14) is slidably connected in the slide groove. An adaptable spring (16) is installed between the wheel frame (18) of the tensioning wheel (14) and the driving frame (12). An electromagnet (17) is fixedly installed on the top of the wheel frame (18) of the tensioning wheel (14). The electromagnet (17) can be adsorbed and fixed in the driving frame (12) after being energized, and the driving frame (12) can enter the hollow portion of the limit seat (3).

5. The automatic marking machine according to claim 1, characterized in that: The marking component comprises a transverse base (19), a marking head (20) is slidably mounted in the transverse base (19), a fine-tuning cylinder (21) is mounted in the middle of the synchronous frame (8), the bottom end of the fine-tuning cylinder (21) of the movable part is slidably connected to the transverse base (19), and a lifting cylinder (22) is fixedly mounted on the side of the synchronous frame (8), and the lifting cylinder (22) is used to connect the rotating component.

6. The automatic marking machine according to claim 5, characterized in that: The bottom of the lifting cylinder (22) is fixedly connected to a transfer frame (23), and both sides of the transfer frame (23) are provided with relief screws (24), and the relief screws (24) pass through the driving frame (12) of the rotating component and are threadedly engaged therewith.

7. The automatic marking machine according to claim 1, characterized in that: A side frame (25) is fixedly mounted on the top of the machine base (1), and a movable frame (26) and a fixed frame (27) are provided inside the side frame (25). The movable frame (26) and the fixed frame (27) both include a multi-rod frame (28), and the multi-rod frame (28) is fixedly connected to the fixed rack (6), and a sliding sleeve (29) and a guide sleeve (30) are fixedly connected inside the multi-rod frame (28). The transfer rod (4) is slidably connected in the sliding sleeve (29), and a lifting cylinder (22) is slidably provided in the guide sleeve (30).

8. The automatic marking machine according to claim 7, characterized in that: The fixed frame (27) is fixed to the inner side of the side frame (25); a movable slide bar (31) is provided on the inner side of the side frame (25); the movable slide bar (31) passes through the movable frame (26) and slides with the movable frame (26); the transmission rod (4) is located on one side of the limit seat (3); an extension platform (32) is fixedly connected to one side of the limit seat (3); the transmission rod (4) is located on the top of the extension platform (32) and slides with the extension platform (32).

9. The automatic marking machine according to claim 1, characterized in that: The base (1) has limit rods (33) slidably connected to both sides of the base, the limit base (3) of the movable part has a slide table (34) fixedly connected to the bottom, the slide table (34) is sleeved outside the limit rod (33) and slidably engaged therewith, and a bidirectional lead screw (35) is installed in the middle of the base (1), both ends of the bidirectional lead screw (35) pass through the limit rod (33) and are threadedly engaged therewith.

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