Driving device, planar moving mechanism and laser engraving machine

Abstract

The utility model relates to laser processing device technical field especially relates to a kind of driving device, plane moving mechanism and laser engraver.A kind of driving device, it includes: fixed frame, the upper end of fixed frame is connected with motor through connecting frame, the lower end of fixed frame is equipped with fixed block, the both sides of fixed block are respectively connected with bearing seat, reduction gear is equipped between two bearing seats, reduction gear is connected with motor through transmission mechanism, the middle part of reduction gear is connected with output shaft, the both ends of output shaft are extended outward and are respectively rotatably connected with two bearing seats, adjusting structure that can adjust the front and rear positions of bearing seat is equipped between the fixed block and bearing seat.The utility model sets adjusting structure in the lower end of the fixed block of fixed frame, can adjust the front and rear direction of bearing seat, and then adjust the front and rear positions of output shaft;Overall structure is relatively simple, and it is convenient to implement.

Description

Technical Field

[0001] This utility model relates to the field of laser processing equipment technology, and in particular to a driving device, a planar moving mechanism, and a laser engraving machine. Background Technology

[0002] Currently, laser engraving machines drive the laser engraving head to move in a plane by setting up a planar moving mechanism. The planar moving mechanism includes a horizontal moving mechanism and a vertical moving mechanism. To ensure the smooth movement of the horizontal moving mechanism, a vertical moving mechanism is usually set on both sides of the horizontal moving mechanism. The two vertical moving mechanisms drive the horizontal moving mechanism to move vertically in sync. The two vertical moving mechanisms need to keep synchronized when working. At present, most machines use a single drive device, which is connected to the two vertical moving mechanisms through a transmission shaft and outputs power to the two vertical moving mechanisms synchronously. When outputting through the transmission shaft, the output shaft of the drive device needs to be coaxial with the transmission shaft.

[0003] Current drive units typically consist of a motor and a reduction gear, which are connected to a fixed frame. The reduction gear is connected to a drive shaft. Since drive units are usually purchased externally, there is generally no adjustment mechanism on the frame, resulting in strict dimensional requirements and high machining precision requirements for the fixed frame, leading to higher costs. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a driving device that can adjust the front and rear positions of the reduction wheel, thereby reducing the machining precision of the fixed frame.

[0005] The second objective of this utility model is to provide a planar moving mechanism having the aforementioned driving device.

[0006] The third objective of this utility model is to provide a laser engraving machine having the aforementioned planar movement mechanism.

[0007] The technical solution adopted in this utility model is as follows:

[0008] A driving device includes: a fixed frame, the upper end of which is connected to a motor via a connecting frame, a fixed block at the lower end of the fixed frame, bearing seats connected to both sides of the fixed block, a reduction wheel between the two bearing seats, the reduction wheel being connected to the motor via a transmission mechanism, an output shaft connected to the middle of the reduction wheel, the two ends of the output shaft extending outward and rotatably connected to the two bearing seats respectively, and an adjustment structure between the fixed block and the bearing seats capable of adjusting the front and rear positions of the bearing seats.

[0009] Furthermore, the adjustment structure includes a connecting groove disposed on the fixed block and arranged in a front-to-back direction, a corresponding connecting hole provided on the bearing seat, a connecting member disposed in the connecting groove, and the connecting member passing through the connecting groove, inserting into the connecting hole, and connecting with the bearing seat.

[0010] Furthermore, the lower end face of the fixing block is provided with a countersunk hole that mates with the connecting groove.

[0011] Furthermore, the transmission mechanism includes a main synchronous pulley connected to the motor shaft, and the side of the reduction pulley is provided with protruding teeth to form a secondary synchronous pulley. A synchronous belt connects the main synchronous pulley and the secondary synchronous pulley.

[0012] Furthermore, the fixing frame is provided with a vertical support block connected to the fixing block. The upper front end of the vertical support block is provided with a vertical moving groove. The connecting frame includes a first connecting plate connected to the fixing frame. One end of the first connecting plate is inserted into the moving groove and can move along the moving groove. One of the vertical support block and the connecting plate is provided with a vertical connecting groove, and the other is provided with a connecting hole. A connector is provided in the vertical connecting groove, and the connector passes through the connecting groove and is inserted into the connecting hole.

[0013] Furthermore, an upper pressure block is connected to the upper end of the vertical support block, and an adjusting bolt is rotatably connected to the middle of the upper pressure block. An adjusting threaded hole is provided at the upper end of the first connecting plate, and the adjusting bolt is threadedly connected to the adjusting threaded hole.

[0014] Furthermore, the connecting frame also includes a second connecting plate perpendicular to the first connecting plate, the second connecting plate having a clearance hole in its center and being fixedly connected to the motor. Preferably, the vertical support plate has several vertical adjustment slots.

[0015] Furthermore, the width of the vertical support block is greater than the width of the fixed block, and notches are provided on both sides of the lower end of the vertical support block. A reinforcing plate is provided between the vertical support block and the fixed block. One end of the reinforcing plate extends into the notch and is connected to the vertical support plate, and the other end of the reinforcing plate is connected to the fixed block.

[0016] A planar moving mechanism includes longitudinal moving mechanisms on both sides and a transverse moving mechanism in the middle. The longitudinal moving mechanism includes a longitudinal guide rail, and the longitudinal guide rail is provided with a synchronous belt drive mechanism. The synchronous belt drive mechanism includes a first synchronous pulley and a second synchronous pulley disposed at both ends of the longitudinal guide rail, and a longitudinal synchronous belt connected to the first synchronous pulley and the second synchronous pulley. The longitudinal synchronous belt is connected to a longitudinal moving plate that is slidably connected to the longitudinal guide rail. Both ends of the transverse moving mechanism are respectively connected to the longitudinal moving plate. The first synchronous pulley is connected to a drive shaft. The aforementioned driving device is provided between the two longitudinal moving mechanisms. The drive shaft is connected to one end of the output shaft through a coupling.

[0017] A laser engraving machine includes the aforementioned planar moving mechanism, and a lateral moving mechanism connected to a laser engraving head and driving the laser engraving head to move laterally.

[0018] The beneficial effects of this utility model are as follows: By setting an adjustment structure at the lower end of the fixing block of the fixing frame, the bearing seat can be adjusted in the front and back direction, thereby adjusting the front and back position of the output shaft; the overall structure is relatively simple and easy to implement. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the driving device in this embodiment.

[0020] Figure 2 for Figure 1 A second-view structural diagram.

[0021] Figure 3 This is a schematic diagram of one structure of the laser engraving machine in this embodiment.

[0022] Figure label:

[0023] 1—Upper pressure block; 2—Adjusting bolt; 3—Vertical support block; 4—Vertical adjustment groove; 5—Reinforcing plate; 6—Fixing block; 7—Bearing seat; 8—Output shaft; 9—Reduction wheel; 10—Motor; 11—Main synchronous pulley; 12—Second connecting plate; 13—Moving groove; 14—First connecting plate; 15—Connecting piece; 16—Counter-hole; 17—Connecting groove; 18—Connecting hole; 19—Synchronous belt; 20—Longitudinal moving mechanism; 21—First synchronous pulley; 22—Longitudinal guide rail; 23—Second synchronous pulley; 24—Drive shaft; 25—Coupling; 30—Transverse moving mechanism; 40—Laser engraving head; 50—Fixing frame; 141—Adjusting threaded hole; 142—Vertical connecting groove. Detailed Implementation

[0024] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0025] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0026] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0028] The present invention will now be described in detail with reference to the accompanying drawings. Figures 1 to 3 As shown.

[0029] Example 1: See Figures 1 to 2 A driving device includes: a fixed frame 50, the upper end of which is connected to a motor 10 via a connecting frame; a fixed block 6 at the lower end of the fixed frame 50; bearing seats 7 connected to both sides of the fixed block 6; a reduction wheel 9 between the two bearing seats 7; the reduction wheel 9 connected to the motor 10 via a transmission mechanism; an output shaft 8 connected to the middle of the reduction wheel 9; the two ends of the output shaft 8 extending outward and rotatably connected to the two bearing seats 7 respectively; and an adjustment structure between the fixed block 6 and the bearing seats 7 for adjusting the front and rear positions of the bearing seats 7.

[0030] Compared with existing technologies, this technical solution incorporates an adjustment structure that can adjust the front-to-back position of the bearing housing 7, thereby adjusting the front-to-back position of the reduction gear 9 and the output shaft 8. In practical applications, when the mounting bracket 50 is installed, the height of the output shaft 8 is consistent with the height of the transmission shaft 24; the main consideration is the deviation in the front-to-back position between the output shaft 8 and the transmission shaft 24. Existing technologies require strict control of the dimensional errors of the mounting bracket 50 and the bearing housing 7 to ensure that the coaxiality of the output shaft 8 and the transmission shaft 24 is within the error range. This technical solution, however, does not require strict control of errors, especially front-to-back errors. When the mounting bracket 50 is installed on the frame, and there is a front-to-back coaxial deviation between the output shaft 8 and the transmission shaft 24, the bearing housing 7 can be adjusted back-to-back using the adjustment structure to adjust the front-to-back position of the output shaft 8, ensuring that the output shaft 8 and the transmission shaft 24 are coaxial, or that their coaxiality is within the error range.

[0031] See Figure 2The adjustment structure includes a connecting groove 17 provided in the fixed block 6 and arranged in the front-to-back direction. The bearing seat 7 is provided with a corresponding connecting hole 18 (not shown in the figure). A connector 15 is provided in the connecting groove 17. The connector 15 passes through the connecting groove 17, is inserted into the connecting hole 18, and is connected to the bearing seat 7.

[0032] During installation and adjustment, loosen connector 15, with one end of connector 15 still inserted into connecting hole 18; push bearing housing 7 to move back and forth, so that output shaft 8 connected to bearing housing 7 is coaxial with external drive shaft 24; during this process, connector 15 moves along connecting groove 17; after bearing housing 7 has moved to a certain position, fix connector 15, which fixes bearing housing 7 to fixing block 6. It can be understood that connecting groove 17 can be a slotted groove, connecting hole 18 is a threaded hole, and connector 15 is a bolt. One end of the bolt passes through the slotted groove and is threaded into the threaded hole.

[0033] See Figure 2 The lower end face of the fixing block 6 is provided with a countersunk hole 16 that mates with the connecting groove 17.

[0034] After setting the countersunk hole 16, the head of the bolt can be hidden inside the countersunk hole 16, preventing the bolt head from protruding and affecting the assembly.

[0035] See Figure 1 , Figure 2 The transmission mechanism includes a main synchronous pulley 11 connected to the rotating shaft of the motor 10, and the side of the reduction pulley 9 is provided with convex teeth to form a secondary synchronous pulley. A synchronous belt 19 is connected between the main synchronous pulley 11 and the secondary synchronous pulley.

[0036] To facilitate control of the output shaft 8's rotational speed, this embodiment uses a synchronous belt 19 for transmission. The motor 10 can be a servo motor, with the servo motor's shaft rotating with the main synchronous pulley 11. The main synchronous pulley 11 is connected to the auxiliary synchronous belt 19 via the synchronous belt 19. During operation, the servo motor drives the main synchronous pulley 11 to rotate, which in turn drives the auxiliary synchronous pulley and the transmission shaft 24 to rotate via the synchronous belt 19, thus enabling accurate output control.

[0037] Secondly, the transmission mechanism can also have other structures, such as 1. using a main sprocket to replace the main synchronous pulley 11, a secondary sprocket to replace the secondary synchronous pulley, and a chain to replace the synchronous belt 19; it can also drive the purpose of control output; 2. using a main gear to replace the main synchronous pulley 11, and a secondary gear to replace the secondary synchronous pulley; the main gear and the secondary gear mesh.

[0038] Furthermore, the fixing frame 50 is provided with a vertical support block 3 connected to the fixing block 6. The upper front end of the vertical support block 3 is provided with a vertical moving groove 13. The connecting frame includes a first connecting plate 14 connected to the fixing frame 50. One end of the first connecting plate 14 is inserted into the moving groove 13 and can move along the moving groove 13. One of the vertical support block 3 and the connecting plate is provided with a vertical connecting groove 142, and the other is provided with a connecting hole 18. A connector 15 is provided in the vertical connecting groove 142, and the connector 15 passes through the connecting groove and is inserted into the connecting hole 18.

[0039] Since the transmission mechanism uses a synchronous belt 19, the tension of the synchronous belt 19 needs to be adjusted during installation, i.e., the distance between the main synchronous pulley 11 and the auxiliary synchronous pulley needs to be adjusted. Because the auxiliary synchronous pulley is fixed to the fixing block 6, only the connection position between the main synchronous pulley 11 and the fixing frame 50 can be adjusted. In this embodiment, a vertical moving groove 13 is provided on the vertical support block 3, and a first connecting plate 14 that can move up and down along the moving groove 13 is provided on the connecting frame. A vertical connecting groove 142 and a connecting hole 18 are provided on the first connecting plate 14 and the vertical support block 3. By adjusting the connection position of the first connecting plate 14, the position of the motor 10 is adjusted, thereby adjusting the tension of the synchronous belt 19, which is convenient. The connecting piece 15 can be a bolt, and the connecting hole 18 is a threaded hole. In this embodiment, the vertical connecting groove 142 is provided on the first connecting plate 14.

[0040] See Figure 1 The upper end of the vertical support block 3 is connected to the upper pressure block 1, and the middle of the upper pressure block 1 is rotatably connected to the adjusting bolt 2. The upper end of the first connecting plate 14 is provided with an adjusting threaded hole 141, and the adjusting bolt 2 is threadedly connected to the adjusting threaded hole 141.

[0041] When adjusting the position of the motor 10, it is often done after assembly. After assembly, it is very inconvenient to drive the first connecting plate 14 to move up and down along the vertical connecting groove 142. To facilitate operation, this embodiment provides an upper pressure block 1 and an adjusting bolt 2. During operation, first loosen the connector 15 connected to the first connecting plate 14 so that the first connecting plate 14 can move up and down. Then rotate the adjusting bolt 2. One end of the adjusting bolt 2 rotates in the adjusting threaded hole 141. Since the head of the adjusting bolt 2 is located above the upper pressure block 1 and cannot move, the adjusting bolt 2 will drive the first connecting plate 14 to move up and down. When the first connecting plate 14 moves to the appropriate position, the connector 15 will be tightened, fixing the first connecting plate 14 to the vertical support plate.

[0042] When the adjusting bolt 2 is connected to the upper pressure block 1, a suitable through hole can be provided in the upper pressure block 1, and the rod of the adjusting bolt 2 can rotate relative to the upper pressure block 1 through the through hole; or a bearing can be provided in the through hole, and the rod of the adjusting bolt 2 can be sleeved with the bearing.

[0043] See Figure 1 The connecting frame further includes a second connecting plate 12 perpendicularly arranged to the first connecting plate 14. The second connecting plate 12 has a clearance hole in its middle and is fixedly connected to the motor 10. Preferably, the vertical support plate has a plurality of vertical adjustment grooves 4.

[0044] To facilitate connection to the motor 10, the connecting frame is also equipped with a second connecting plate 12. The second connecting plate 12 is perpendicular to the first connecting plate 14 and can be integrally formed or separately formed and then connected as one piece. Secondly, when adjusting the position of the output shaft 8, height adjustment may also be required. In this embodiment, a vertical adjustment groove 4 is provided on the vertical support plate. When the fixing frame 50 is fixed to the machine frame, the vertical support plate is connected to the machine frame. The installation height of the fixing frame 50 can be adjusted through the vertical adjustment groove 4, thereby adjusting the height of the output shaft 8, making it convenient to use.

[0045] See Figure 1 The width of the vertical support block 3 is greater than the width of the fixed block 6. The lower end of the vertical support block 3 is provided with notches on both sides. A reinforcing plate 5 is provided between the vertical support block 3 and the fixed block 6. One end of the reinforcing plate 5 extends into the notch and is connected to the vertical support plate, and the other end of the reinforcing plate 5 is connected to the fixed block 6.

[0046] To improve the structural strength between the vertical support block 3 and the fixed block 6, a reinforcing plate 5 is provided between the vertical support block 3 and the fixed block 6 in this embodiment. Secondly, to avoid the reinforcing plate 5 being exposed, the width of the vertical support block 3 is designed to be greater than the width of the fixed block 6. The width of the notches on both sides plus the width of the fixed block 6 is equal to the width of the vertical support block 3. The reinforcing plate 5 is connected to the sides of the fixed block 6 and the vertical support block 3.

[0047] Example 2, see Figure 3 A planar moving mechanism includes longitudinal moving mechanisms 20 located on both sides and a transverse moving mechanism 30 located in the middle. The longitudinal moving mechanism 20 includes a longitudinal guide rail 22, which is provided with a synchronous belt 19 transmission mechanism. The synchronous belt 19 transmission mechanism includes a first synchronous pulley 21 and a second synchronous pulley 23 disposed at both ends of the longitudinal guide rail 22, and a longitudinal synchronous belt 19 (not shown in the figure) connected to the first synchronous pulley 21 and the second synchronous pulley 23. The longitudinal synchronous belt 19 is connected to a longitudinal moving plate that is slidably connected to the longitudinal guide rail 22. The two ends of the transverse moving mechanism 30 are respectively connected to the longitudinal moving plate. The first synchronous pulley 21 is connected to a drive shaft 24. The aforementioned driving device is provided between the two longitudinal moving mechanisms 20. The drive shaft 24 is connected to one end of the output shaft 8 through a coupling 25.

[0048] The longitudinal moving mechanisms 20 on both sides of the planar moving mechanism are driven synchronously by the output shaft 8, so that the longitudinal moving mechanisms 20 on both sides move synchronously, and synchronously drive the two ends of the transverse moving mechanism 30 to move longitudinally.

[0049] Example 3: See Figure 1 A laser engraving machine includes the aforementioned planar moving mechanism, and a lateral moving mechanism 30 connected to a laser engraving head 40 and driving the laser engraving head 40 to move laterally.

[0050] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A driving device comprising: A fixed frame is provided, the upper end of which is connected to the motor via a connecting frame. A fixed block is provided at the lower end of the fixed frame. Bearing seats are connected to both sides of the fixed block. A reduction wheel is provided between the two bearing seats. The reduction wheel is connected to the motor via a transmission mechanism. An output shaft is connected to the middle of the reduction wheel. The two ends of the output shaft extend outward and are rotatably connected to the two bearing seats respectively. The feature is that an adjustment structure is provided between the fixed block and the bearing seats to adjust the front and rear positions of the bearing seats.

2. The driving device as described in claim 1, characterized in that: The adjustment structure includes a connecting groove disposed on the fixed block and arranged in a front-to-back direction, a bearing seat having a corresponding connecting hole, a connecting member disposed in the connecting groove, the connecting member passing through the connecting groove, inserting into the connecting hole, and connecting with the bearing seat.

3. The driving device as described in claim 1, characterized in that: The lower end face of the fixing block is provided with a countersunk hole that matches the connecting groove.

4. The driving device as described in claim 1, characterized in that: The transmission mechanism includes a main synchronous pulley connected to the motor shaft, and the side of the reduction pulley is provided with teeth to form a secondary synchronous pulley. A synchronous belt connects the main synchronous pulley and the secondary synchronous pulley.

5. The driving device as described in claim 1, characterized in that: The fixing frame is provided with a vertical support block connected to the fixing block. The upper front end of the vertical support block is provided with a vertical moving groove. The connecting frame includes a first connecting plate connected to the fixing frame. One end of the first connecting plate is inserted into the moving groove and can move along the moving groove. One of the vertical support block and the connecting plate is provided with a vertical connecting groove, and the other is provided with a connecting hole. A connector is provided in the vertical connecting groove, and the connector passes through the connecting groove and is inserted into the connecting hole.

6. The driving device as described in claim 5, characterized in that: The upper end of the vertical support block is connected to an upper pressure block, and the middle of the upper pressure block is rotatably connected to an adjusting bolt. The upper end of the first connecting plate is provided with an adjusting threaded hole, and the adjusting bolt is threadedly connected to the adjusting threaded hole.

7. The driving device as described in claim 6, characterized in that: The connecting frame also includes a second connecting plate that is perpendicular to the first connecting plate. The second connecting plate has a clearance hole in the middle and is fixedly connected to the motor.

8. The driving device as described in claim 5, characterized in that: The width of the vertical support block is greater than the width of the fixed block. Notches are provided on both sides of the lower end of the vertical support block. A reinforcing plate is provided between the vertical support block and the fixed block. One end of the reinforcing plate extends into the notch and is connected to the vertical support plate, and the other end of the reinforcing plate is connected to the fixed block.

9. A planar moving mechanism, comprising longitudinal moving mechanisms on both sides and a transverse moving mechanism in the middle, wherein the longitudinal moving mechanisms include a longitudinal guide rail, the longitudinal guide rail is provided with a synchronous belt drive mechanism, the synchronous belt drive mechanism includes a first synchronous pulley and a second synchronous pulley disposed at both ends of the longitudinal guide rail, and a longitudinal synchronous belt connected to the first synchronous pulley and the second synchronous pulley, the longitudinal synchronous belt is connected to a longitudinal moving plate slidably connected to the longitudinal guide rail, and both ends of the transverse moving mechanism are respectively connected to the longitudinal moving plate; the first synchronous pulley is connected to a drive shaft, characterized in that: A drive device as described in any one of claims 1 to 8 is provided between the longitudinal moving mechanisms on both sides, and the transmission shaft is connected to one end of the output shaft via a coupling.

10. A laser engraving machine, characterized in that: It includes the planar moving mechanism as described in claim 9, wherein the lateral moving mechanism is connected to the laser engraving head and drives the laser engraving head to move laterally.

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