A laser processing machine

Abstract

The present invention relates to the technical field of laser processing, and particularly relates to a laser processing machine. It includes: a laser processing head and a transverse movement mechanism, where the transverse movement mechanism includes a horizontally arranged guide rail and a transverse synchronous belt drive mechanism; the laser processing head is connected with a mounting seat, the mounting seat is slidably connected to the guide rail, and the mounting seat is connected to the synchronous belt of the transverse synchronous belt drive mechanism; synchronous belt connection components are respectively arranged on both sides of the mounting seat, and at least one of the synchronous belt connection components is provided with a tension adjustment structure. In the present invention, synchronous belt connection components are arranged on both sides of the mounting seat, and at least one of the synchronous belt connection components is provided with a tension adjustment structure. The tension of the synchronous belt can be adjusted through the tension adjustment structure, reducing the machine cost.

Description

[0001] This application is a divisional application of the application with the application number 2024114913339, the invention title of "A Laser Processing Machine", and the application date of October 24, 2024. Technical Field

[0002] The present invention relates to the technical field of laser processing, and particularly relates to a laser processing machine. Background Art

[0003] Currently, when the laser processing head of a desktop laser processing machine moves horizontally, a belt-driven mechanism is generally used to drive the laser processing head to move horizontally. For example, in the invention patent with the application number CN202110745679.7 and the invention title of "Laser Processing Equipment", this patent document records that the laser processing head is slidably connected to the track frame through a mounting seat, and at the same time, the mounting seat moves linearly under the drive of the synchronous belt of the transmission assembly. As is well known, when assembling a synchronous belt transmission mechanism, when the length of the synchronous belt is relatively long, due to the influence of its own gravity, it is necessary to adjust the tension of the synchronous belt; currently, a tensioning wheel with adjustable position is generally used. After assembling the synchronous belt mechanism, the position of the tensioning wheel is adjusted to adjust the tension of the synchronous belt; and setting the tensioning wheel will make the current track frame structure complicated and the cost increase a lot. Therefore, it is necessary to design a regulating structure with lower cost. Summary of the Invention

[0004] The purpose of the present invention is to provide a laser processing machine in view of the deficiencies of the prior art. The laser engraving head of this laser processing machine has a belt tension regulating structure, which is convenient to adjust and has low usage cost.

[0005] A laser processing machine includes: a laser processing head and a horizontal movement mechanism. The horizontal movement mechanism includes a horizontally arranged guide rail and a horizontal synchronous belt transmission mechanism; the laser processing head is connected with a mounting seat, the mounting seat is slidably connected to the guide rail, and the mounting seat is connected to the synchronous belt of the horizontal synchronous belt transmission mechanism; synchronous belt connection components are respectively arranged on both sides of the mounting seat, and at least one of the synchronous belt connection components is provided with a tension regulating structure.

[0006] Preferably, the synchronous belt connection component includes: a clamping block. A main connection hole is arranged on the side surface of the clamping block, a secondary connection hole is arranged on the side surface of the mounting seat, and the clamping block is connected to the mounting seat through a connecting piece passing through the main connection hole and the secondary connection hole. The synchronous belt is clamped between the clamping block and the mounting seat.

[0007] Preferably, the horizontal synchronous belt transmission mechanism includes a main connecting plate and a secondary connecting plate respectively connected to both sides of the guide rail. The main connecting plate is connected with a first synchronous pulley and a driving motor for driving the first synchronous pulley to rotate. The secondary connecting plate is connected with a second synchronous pulley, and the synchronous belt is connected between the first synchronous pulley and the second synchronous pulley.

[0008] Preferably, the synchronous belt connection assembly includes a main clamping block. A plurality of first connection holes are provided on the side surface of the main clamping block, and second connection holes matching the first connection holes are provided on the side surface of the mounting seat. The main clamping block is connected with a first connecting member. One end of the first connecting member passes through the first connection hole and the second connection hole to be connected with the mounting seat, and the connection position of the first connecting member and the mounting seat can be adjusted. A concave hole is provided in the middle of one side surface of the main clamping block, and a secondary clamping block is provided in the concave hole. The secondary clamping block is provided with a third connection hole, and the main clamping block is provided with a fourth connection hole matching the third connection hole. The main clamping block is connected with a second connecting member. One end of the second connecting member passes through the fourth connection hole and the third connection hole to be connected with the secondary clamping block.

[0009] Preferably, one or two limiting rings are sleeved in the middle of the first connecting member. When one limiting ring is connected, the limiting ring abuts against the mounting seat or the main clamping block. When two limiting rings are connected, the two limiting rings respectively abut against the mounting seat and the main clamping block.

[0010] Preferably, the first connecting member is a screw rod. The first connection hole and the second connection hole are both threaded holes. External threads are respectively provided at both ends of the screw rod, and the external threads at both ends have opposite helix directions. Both ends of the first connecting member are threadedly connected with the main connection block and the mounting seat respectively.

[0011] Preferably, a limiting block is connected to the outer end of the screw rod, and the limiting block abuts against the main clamping block. More preferably, the screw rod is threadedly connected with the limiting block.

[0012] Furthermore, pulleys are respectively provided at the upper end and the lower end of the back surface of the mounting seat. An annular groove is provided in the middle of the side surface of the pulley. Transverse guide columns matching the pulleys are respectively connected to the upper end surface and the lower end surface of the guide rail, and the pulley rolls along the transverse guide column.

[0013] Preferably, a connecting shaft is connected to the middle of the pulley, and the pulley can rotate freely relative to the connecting shaft. One end of the connecting shaft is connected to the mounting seat. More preferably, a counterbore corresponding to the connecting shaft is provided at the upper end or / and the lower end of the front surface of the mounting seat. An eccentric wheel is provided in the counterbore. An eccentric hole is provided in the middle of the eccentric wheel. A through hole for the connecting shaft to be inserted is provided on the mounting seat. One end of the connecting shaft passes through the through hole and is inserted into the eccentric hole. The eccentric wheel is provided with a plurality of operation holes. A fastener is connected in at least one operation hole, and the fastener abuts against the bottom surface of the counterbore.

[0014] Preferably, on both sides of the upper end of the back surface of the mounting base, upper extension columns extend backward respectively. The upper extension columns are connected with upper pulleys. The lower end of the back surface of the mounting base is connected with a fixed shaft and a movable block. A hinge hole is provided in the middle of the movable block and is hinged with the fixed shaft. One end of the movable block is connected with a lower pulley. The middle parts of the side surfaces of the upper pulley and the lower pulley bulge outwards to form convex rings. Guide grooves matching with the convex rings are respectively provided on the upper end surface and the lower end surface of the guide rail. The other end of the movable block is movably connected with an adjusting rod. The adjusting rod can adjust the connection position with the movable block. A convex adjusting block is provided on the back surface of the mounting base. The adjusting block is located below the movable block. The adjusting block is provided with a through hole for the lower end of the adjusting rod to pass through. The lower end of the adjusting rod passes through the through hole, and an elastic member for driving the lower pulley to move upwards is provided between the lower end of the adjusting rod and the adjusting block.

[0015] Preferably, the adjusting rod can be a screw or a bolt, and the adjusting block is threadedly connected with the adjusting rod; the elastic member can be a spring, which pushes the adjusting rod to move downwards and drives the adjusting block to rotate, and the lower pulley moves upwards. It can be understood that: the diameter of the through hole on the adjusting block can be set larger so that the adjusting rod can still move when the adjusting block rotates. In this embodiment, the through hole is in a waist shape.

[0016] Preferably, a zeroing rod adjusting assembly is connected to the back surface of the mounting base. The zeroing rod adjusting assembly includes a zeroing rod. Two parallel fixing plates are provided on the back surface of the mounting base. A limiting space is formed between the two fixing plates. A through hole for the zeroing rod to pass through is provided in the middle of the fixing plate. A spiral side edge is provided in the middle of the side surface of the zeroing rod. An adjusting ring is sleeved outside the zeroing rod. The adjusting ring is located in the limiting space, and steel balls that can freely rotate are embedded in the inner side surface of the adjusting ring; an open-ring-shaped piece is provided at the lower end of the side surface of the zeroing rod. The opening of the ring-shaped piece is at the highest point of the ring-shaped piece, and the width of the opening is greater than the diameter of the steel ball; driving wheels are respectively provided on both sides of the adjusting ring. A connecting shaft is connected to the middle of the driving wheel. The driving wheels are located in the limiting space. The fixing plate is provided with a transverse chute matching with the connecting shaft. The end of the connecting shaft extends into the transverse chute. The rear end of the driving wheel extends out of the fixing plate and abuts against the guide rail. An intermediate wheel is provided between one of the driving wheels and the adjusting ring. The intermediate wheel is rotatably connected with the fixing plate. The side surface of the intermediate wheel abuts against the side surface of the adjusting ring; a convex platform is provided in the middle of the back surface of the mounting base. A guide cylinder matching with the upper end of the zeroing rod is connected to the upper end of the convex platform. The convex platform is provided with a through hole. The upper end of the zeroing rod passes through the convex platform and the guide cylinder in sequence. The cross section of the upper end of the zeroing rod is in a polygonal shape; an induction block is connected to the upper end of the zeroing rod. A sensor is connected to the upper end of the back surface of the mounting base. The sensor is provided with an induction hole matching with the induction block.

[0017] Preferably, a spring is sleeved outside the guide cylinder. The two ends of the spring are respectively fixed to the induction block and the convex platform.

[0018] Advantages of the present invention: Synchronous belt connection components are provided on both sides of the mounting seat of the present invention, and at least one of the synchronous belt connection components is provided with a tension adjustment structure. The tension of the synchronous belt can be adjusted through the tension adjustment structure, reducing the machine cost. Description of the Drawings

[0019] Figure 1 FIG. is a schematic structural diagram of the laser processing head and the lateral movement mechanism of this embodiment excluding the synchronous belt cooperation.

[0020] Figure 2 FIG. is a schematic structural diagram of the cooperation between the laser processing head and the mounting seat.

[0021] Figure 3 For Figure 2 Another perspective schematic diagram.

[0022] Figure 4 For Figure 2 An exploded structural schematic diagram.

[0023] Figure 5 FIG. is a second schematic structural diagram of the cooperation between the laser processing head and the mounting seat.

[0024] Figure 6 FIG. is a third schematic structural diagram of the cooperation between the laser processing head and the mounting seat.

[0025] Figure 7 For Figure 6 An enlarged schematic diagram of part A in

[0026] Figure 8 FIG. is a schematic structural diagram of an adjusting ring.

[0027] Reference Signs:

[0028] 1 - Guide rail; 2 - Mounting seat; 3 - Laser processing head; 4 - Lateral guide post; 5 - Secondary connecting plate; 6 - Second synchronous pulley; 7 - Main connecting plate; 8 - Intermediate transmission mechanism; 9 - Driving motor; 10 - First synchronous pulley; 11 - Synchronous belt connection assembly; 12 - Limiting ring; 13 - First connecting piece; 14 - Main clamping block; 15 - First connecting hole; 16 - Secondary clamping block; 17 - Second connecting piece; 18 - Pulley; 19 - Operation hole; 20 - Eccentric wheel; 23 - Annular groove; 24 - Perforation; 25 - Counterbore; 26 - Fastener; 27 - Connecting shaft; 28 - Threaded hole; 29 - Eccentric hole; 32 - Concave hole; 33 - Upper pulley; 34 - Lower pulley; 35 - Movable block; 36 - Elastic member; 37 - Adjusting block; 39 - Adjusting rod; 40 - Fixed shaft; 41 - Sensor; 42 - Inductive block; 43 - Spring; 44 - Guide tube; 45 - Zeroing rod; 46 - Upper extension post; 47 - Side edge; 48 - Annular plate; 49 - Lateral sliding groove; 50 - Adjusting ring; 51 - Connecting shaft; 52 - Driving wheel; 53 - Fixed plate; 54 - Intermediate wheel; 55 - Boss; 56 - Fourth connecting hole; 57 - Second connecting hole; 58 - Third connecting hole; 59 - Steel ball. Detailed implementation manners

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0031] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0032] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means two or more unless otherwise specifically defined.

[0033] The present invention will be described in detail below with reference to the accompanying drawings. As Figures 1 to 8 shown.

[0034] Embodiment 1: Refer to Figure 1 、 Figure 2 and Figure 3 ; A laser processing machine, which includes: a laser processing head 3 and a lateral movement mechanism. The lateral movement mechanism includes a laterally arranged guide rail 1 and a lateral synchronous belt drive mechanism; the laser processing head 3 is connected with a mounting seat 2. The mounting seat 2 is slidably connected to the guide rail 1 and is connected to the synchronous belt of the lateral synchronous belt drive mechanism; synchronous belt connection components 11 are respectively arranged on both sides of the mounting seat 2, and at least one of the synchronous belt connection components 11 is provided with a tension adjustment structure.

[0035] Refer to the attached Figure 1 ; In this embodiment, the mounting seat 2 is connected to the synchronous belt through the synchronous belt connection components 11 arranged on both sides. When specifically connecting, the synchronous belt can be an open loop with a break in the middle. The two ends of the break are respectively connected to the corresponding synchronous belt connection components 11; when the lateral synchronous belt drive mechanism drives the synchronous belt to move laterally, the synchronous belt drives the mounting seat 2 to move laterally. At the same time, the mounting seat 2 is slidably connected to the lateral guide rail 1, and the guide rail 1 will guide the mounting seat 2 to perform directional linear movement; there are various ways of sliding connection, such as the sliding connection of a guide rail slider, and the prior art can be adopted, which will not be elaborated here. In this embodiment, the synchronous belt connection components 11 on both sides are provided with tension adjustment structures, and when adjusting, the adjustment range is large; of course, different synchronous belt connection components 11 can be used on both sides, and only one of them has a tension adjustment structure.

[0036] It can be understood that the synchronous belt connection component 11 can adopt the following structure: The synchronous belt connection component 11 includes: a clamping block. A main connection hole is provided on the side of the clamping block, and a secondary connection hole is provided on the side of the mounting seat 2. The clamping block is connected to the mounting seat 2 through a connecting piece passing through the main connection hole and the secondary connection hole, and the synchronous belt is clamped between the clamping block and the mounting seat 2. The connecting piece can be a bolt, and the secondary connection hole is a threaded hole. When applied, the middle of the synchronous belt breaks and forms an open loop structure; the two ends of the break opening are respectively clamped and connected to the synchronous belt connection components 11 on both sides.

[0037] Refer to Figure 1, The horizontal synchronous belt drive mechanism includes a main connecting plate 7 and a sub-connecting plate 5 respectively connected to both sides of the guide rail 1. The main connecting plate 7 is connected with a first synchronous pulley 10 and a driving motor 9 for driving the first synchronous pulley 10 to rotate. The sub-connecting plate 5 is connected with a second synchronous pulley 6. The synchronous belt is connected between the first synchronous pulley 10 and the second synchronous pulley 6.

[0038] As a common technology, the horizontal synchronous belt drive mechanism includes a driving motor 9, a first synchronous pulley 10, a second synchronous pulley 6 and a synchronous belt; see the appendix Figure 1 , For the convenience of design, an intermediate drive mechanism 8 can also be provided between the driving motor 9 and the first synchronous pulley 10. It can be understood that the intermediate drive mechanism 8 can also be a synchronous belt drive mechanism. This technology can be the prior art and will not be elaborated here.

[0039] See Figure 4 , The synchronous belt connection component 11 includes a main clamping block 14. A plurality of first connection holes 15 are provided on the side surface of the main clamping block 14. Second connection holes 57 matching the first connection holes 15 are provided on the side surface of the mounting seat 2. The main clamping block 14 is connected with a first connecting member 13. One end of the first connecting member 13 passes through the first connection hole 15 and the second connection hole 57 to be connected with the mounting seat 2, and the connection position of the first connecting member 13 and the mounting seat 2 can be adjusted; a concave hole 32 is provided in the middle of one side surface of the main clamping block 14. A sub-clamping block 16 is provided in the concave hole 32. The sub-clamping block 16 is provided with a third connection hole 58. The main clamping block 14 is provided with a fourth connection hole 56 matching the third connection hole 58. The main clamping block 14 is connected with a second connecting member 17. One end of the second connecting member 17 passes through the fourth connection hole 56 and the third connection hole 58 to be connected with the sub-clamping block 16.

[0040] See the appendix Figure 4 , Figure 5 , The synchronous belt connection component 11 clamps and connects the belt through the connection between the main clamping block 14 and the sub-clamping block 16; secondly, the synchronous belt connection component 11 has a tension adjustment structure. When the main clamping block 14 is connected to the side surface of the mounting seat 2, the main clamping block 14 is connected to the mounting seat 2 through the first connecting member 13, and the connection position of the first connecting member 13 and the mounting seat 2 can be adjusted; when the tension needs to be adjusted, the connection position of the first connecting member 13 is adjusted, thereby adjusting the distance between the main clamping block 14 and the mounting seat 2, so as to achieve the adjustment of the use length of the synchronous belt, that is, the adjustment of the belt tension.

[0041] In specific implementation, it can be understood that: the first connecting member 13 can adopt a bolt, the second connection hole 57 can adopt a threaded hole, one end of the bolt passes through the first connection hole 15 and is threadedly connected to the threaded hole, and the bolt can adjust the connection position with the mounting seat 2, thereby adjusting the distance between the main clamping block 14 and the mounting seat 2 to achieve the purpose of tension adjustment.

[0042] See Figures 2 to 4 One or two limiting rings 12 are sleeved on the middle part of the first connecting piece 13. When there is one limiting ring 12 connected, the limiting ring 12 abuts against the mounting seat 2 or the main clamping block 14. When there are two limiting rings 12 connected, the two limiting rings 12 respectively abut against the mounting seat 2 and the main clamping block 14.

[0043] The limiting ring 12 is used to limit the depth of insertion of the first connecting piece 13 into the second connecting hole 57 in the mounting seat 2. Of course, to prevent the first connecting piece 13 from detaching from the second connecting hole 57, a fastening hole can be provided on the mounting seat 2. The fastening hole communicates with the second connecting hole 57. The fastening hole and the second connecting hole 57 are respectively located on two adjacent sides of the mounting seat 2. A fastener is provided in the fastening hole. The fastener is inserted into the fastening hole and abuts against the first connecting piece 13. Similarly, to prevent the first connecting piece 13 from detaching from the first connecting hole 15, a fastening hole can also be provided on one side of the main clamping block 14. The fastening hole and the first connecting hole 15 are respectively located on two adjacent sides of the main clamping block 14. A fastener that abuts against the first connecting piece 13 is provided in the fastening hole. Preferably, the fastening hole can be a threaded hole, and the fastener can be a bolt or a screw. Secondly, the limiting ring 12 can move relative to the first connecting piece 13 to adjust the sleeved position. For example, the first connecting piece 13 is a rod, and the limiting ring 12 is connected to the rod by interference fit. When the first connecting piece 13 adjusts its connection position with the mounting seat 2 or adjusts its connection position with the main clamping block 14, the limiting ring 12 can move along the rod and make an adaptive adjustment to keep the limiting ring 12 abutting against the side surface of the mounting seat 2 or the limiting ring 12 abutting against the side surface of the main clamping block 14.

[0044] Preferably, the first connecting piece 13 is a screw rod, the first connecting hole 15 and the second connecting hole 57 are both threaded holes. External threads are respectively provided at both ends of the screw rod, and the external threads at both ends have opposite helix directions. The two ends of the first connecting piece 13 are respectively threadedly connected to the main connecting block and the mounting seat 2.

[0045] In this embodiment, the connecting piece connects the main clamping block 14 and the mounting seat 2, and the connecting piece can be adjusted in position. Therefore, the connecting piece can be set as a screw rod. Threads with opposite helix directions are respectively provided at both ends of the screw rod. The screw rod is respectively threadedly connected to the main connecting block and the mounting seat 2. When adjusting the position, the screw rod simultaneously adjusts its connection positions with the main connecting block and the mounting seat 2, and the adjustment directions of the two connection positions are opposite, which can accelerate the adjustment of the distance between the main clamping block 14 and the mounting seat 2.

[0046] Preferably, a limiting block is connected to the outer end of the screw rod, and the limiting block abuts against the main clamping block 14. More preferably, the screw rod is threadedly connected to the limiting block.

[0047] When the first connecting member 13 is a bolt or a screw rod, the limiting ring 12 can be a limiting nut, and the limiting nut is threadedly connected to the first connecting member 13. When adjustment is carried out, the bolt or the screw rod is rotated, and the first connecting member 13 rotates relative to the mounting base 2 and adjusts the connection position, thereby adjusting the distance between the main clamping block 14 and the mounting base 2, achieving the effect of adjusting the synchronous belt tension. During adjustment, by using the limiting nut, the bolt or the screw rod can be restricted from rotating randomly. Secondly, the cooperation between the limiting nut and the limiting block restricts the main clamping block 14 to prevent the main clamping block 14 from moving along the bolt or the screw rod, maintaining the stability of the main clamping block 14; avoiding that during the lateral back-and-forth movement, the main clamping block 14 moves a small distance along the bolt or the screw rod, thereby affecting the stability of the mounting base 2 and bringing instability to the operation of the laser processing head 3. Especially when the limiting block is threadedly connected to the screw rod, it can not only achieve the adjustment of the position of the main clamping block 14, that is, the adjustment of the synchronous belt tension; but also restrict the main clamping block 14 to prevent it from shaking along the screw rod, making the laser processing head 3 work stably.

[0048] See Figure 1 and Figure 3 、 Figure 4 On the upper and lower ends of the back surface of the mounting base 2, pulleys 18 are respectively provided. In the middle of the side surface of the pulley 18, an annular groove 23 is provided. On the upper end surface and the lower end surface of the guide rail 1, transverse guide posts 4 that cooperate with the pulleys 18 are respectively connected, and the pulley 18 rolls along the transverse guide post 4.

[0049] The mounting base 2 is slidably connected to the guide rail 1. To reduce wear and extend the service life of the mounting base 2 and the guide rail 1, in this embodiment, a roller cooperation method is adopted. On the upper and lower ends of the back surface of the mounting base 2, rollers are respectively connected, and the rollers can roll along the transverse guide posts 4 provided on the guide rail 1; the friction between the pulley 18 and the transverse guide post 4 is rolling friction, and the friction coefficient is much smaller than sliding friction, which can reduce wear. Secondly, the transverse guide post 4 and the guide rail 1 adopt a split structure, and the transverse guide post 4 can be made of wear-resistant material, which can avoid using wear-resistant material for the entire guide rail 1, effectively reducing costs and also facilitating replacement.

[0050] See Figure 3 、 Figure 4 In the middle of the pulley 18, a connecting shaft 27 is connected, and the pulley 18 can rotate freely relative to the connecting shaft 27. One end of the connecting shaft 27 is connected to the mounting base 2; more preferably, on the upper end or / and the lower end of the front surface of the mounting base 2, a counterbore 25 corresponding to the connecting shaft 27 is provided. In the counterbore 25, an eccentric wheel 20 is provided. In the middle of the eccentric wheel 20, an eccentric hole 29 is provided. The mounting base is provided with a through hole 24 for the connecting shaft 27 to insert. One end of the connecting shaft 27 passes through the through hole 24 and inserts into the eccentric hole 29. The eccentric wheel 20 is provided with a plurality of operation holes 19; at least one operation hole 19 is connected with a fastener 26, and the fastener 26 abuts against the bottom surface of the counterbore 25.

[0051] Since an annular groove 23 is formed in the middle of the pulley 18, and transverse guide posts 4 are provided on the upper and lower end faces of the guide rail 1; during assembly, generally, the pulley 18 is first fitted with the transverse guide post 4, and then the pulley 18 is fixed to the mounting seat 2; due to the small assembly space, this assembly method is very time-consuming and laborious, and the efficiency is relatively low; in this embodiment, a new connection structure is adopted. Among a pair of upper and lower pulleys 18, at least one pulley 18 is connected to the eccentric wheel 20. The structure of this embodiment can first install the pulley 18 onto the mounting seat 2, and then assemble the mounting seat 2 onto the guide rail 1. In this embodiment, the pulley 18 is connected to the eccentric wheel 20 through a connecting shaft 27. The eccentric wheel 20 can be operated and rotated through the operation hole 19. When the eccentric wheel 20 rotates, it will drive the connecting shaft 27 to revolve, and the revolution of the connecting shaft 27 will drive the pulley 18 to move in an arc and can realize the movement of the position of the pulley 18 in the vertical direction; therefore, during assembly, the pulley 18 located on the upper side or / and the pulley 18 located on the lower side can be moved outward by operating the eccentric wheel 20, and the distance between the upper pulley 18 and the lower pulley 18 becomes larger and is sufficient to exceed the maximum vertical height of the guide rail 1. Then, the mounting seat 2 is brought close to and abutted against the guide rail 1. The annular groove 23 of the upper pulley 18 is opposite to the transverse guide post 4 on the upper end face of the guide rail 1, and the annular groove 23 of the lower pulley 18 is opposite to the transverse guide post 4 on the lower end face of the guide rail 1; move the mounting seat 2 upward or downward, and then rotate the eccentric wheel 20 so that the upper pulley 18 and the lower pulley 18 are abutted against the transverse guide posts 4 on the upper and lower end faces of the guide rail 1. Finally, fasteners 26 are arranged in a plurality of operation holes 19 to fix the eccentric wheel 20. The whole process is convenient to operate.

[0052] In this embodiment, a counterbore is only provided at the lower end of the mounting seat 2 and the eccentric wheel 20 is installed; it can be understood that a counterbore can also be only provided at the upper end of the mounting seat 2 and the eccentric wheel 20 is installed; or counterbores and the eccentric wheel 20 are provided at both the upper and lower ends of the mounting seat 2.

[0053] Secondly, the operation hole 19 cooperating with the fastener 26 can be a threaded hole 28, and the fastener 26 is a screw or a bolt or a stud, etc.; in this embodiment, exemplarily, 4 operation holes 19 are provided on the eccentric wheel 20, and 2 threaded holes 28 are provided. Of course, the operation hole 19 can also be 3, 5 or 6; the threaded hole 28 can be set to 3, 4, etc. When the number of operation holes 19 is an even number, the number of threaded holes 28 is half of the number of operation holes 19, and the threaded holes 28 are arranged at intervals.

[0054] See Figure 5 、 Figure 6, on both sides of the upper end of the back surface of the mounting base 2, upper extension columns 46 extend backward respectively. The upper extension columns 46 are connected with upper pulleys 33. The lower end of the back surface of the mounting base 2 is connected with a fixed shaft 40 and a movable block 35. A hinge hole is provided in the middle of the movable block 35 and is hinged with the fixed shaft 40. One end of the movable block 35 is connected with a lower pulley 34. The middle parts of the side surfaces of the upper pulley 33 and the lower pulley 34 bulge outwards to form convex rings. Guide grooves matched with the convex rings are respectively provided on the upper end surface and the lower end surface of the guide rail 1. The other end of the movable block 35 is movably connected with an adjusting rod 39. The adjusting rod 39 can adjust the connection position with the movable block 35. A convex adjusting block 37 is provided on the back surface of the mounting base 2. The adjusting block 37 is located below the movable block 35. The adjusting block 37 is provided with a through hole for the lower end of the adjusting rod 39 to pass through. An elastic member 36 for driving the lower pulley 34 to move upwards is provided between the lower end of the adjusting rod 39 passing through the through hole and the adjusting block 37.

[0055] The upper pulley 33 and the lower pulley 34 can both be composed of a connecting shaft, a bearing, and a rubber sleeve. The connecting shaft is sleeved with the bearing, and the rubber sleeve is sleeved outside the bearing. The rubber sleeve can rotate freely relative to the connecting shaft. Therefore, both the upper pulley 33 and the lower pulley 34 can rotate freely relative to the mounting base 2. In this embodiment, the upper extension column 46 is used to connect the upper pulley 33, and the adjusting block 37 is connected to the lower pulley 34, so that the distances between the upper pulley 33 and the lower pulley 34 from the back surface of the mounting base 2 are relatively large, thereby making the guiding structures provided on the upper end surface and the lower end surface of the guide rail 1 close to the middle parts of the upper end surface and the lower end surface. In this embodiment, components such as rubber sleeves are used for the upper pulley 33 and the lower pulley 34, so that the middle parts of the upper pulley 33 and the lower pulley 34 bulge out to form convex rings. Therefore, guiding grooves (not shown in the figure) matching with the upper pulley 33 and the lower pulley 34 are provided on the upper end surface and the lower end surface of the guide rail 1, and the convex rings of the upper pulley 33 and the lower pulley 34 roll along the guiding grooves. When assembling the mounting base 2 and the guide rail 1 with this structure, the upper pulley 33 and the lower pulley 34 can be smoothly snapped above and below the guiding grooves on both sides of the guide rail 1. Then, the upper pulley 33 is snapped into the corresponding guiding groove. Under the action of the elastic member 36, the lower pulley 34 pushes the adjusting rod 39 to move and drives the adjusting block 37 to rotate, and the adjusting block 37 drives the lower pulley 34 to move upward and snap into the corresponding guiding groove. It can be understood that: the solution of this embodiment is convenient for assembly. The elastic force of the elastic member 36 acting on the adjusting rod 39 can be adjusted to be smaller in the early stage of assembly, so that the operation difficulty is smaller and it is convenient for the lower pulley to rotate. After the mounting base 2 and the guide rail 1 are assembled, by adjusting the position of the adjusting rod 39, the elastic force of the elastic member 36 can be adjusted, so that the lower pulley 34 can have a relatively large abutting force against the lower end surface of the guide rail 1, and the upper pulley 33 and the lower pulley 34 have a good clamping force on the guide rail 1. Secondly, in the later stage of use, when the upper pulley 33 and the lower pulley 34 are worn severely, the clamping force of the upper pulley 33 and the lower pulley 34 on the guide rail 1 is reduced a lot, resulting in unstable clamping. At this time, the position of the adjusting rod 39 can be adjusted to adjust the elastic force of the elastic member 36.

[0056] Preferably, the adjusting rod 39 can be a screw or a bolt. The adjusting block 37 is provided with a threaded through hole and is threadedly connected to the adjusting rod 39. The elastic member 36 can be a spring, which pushes the adjusting rod 39 to move downward and drives the adjusting block 37 to rotate, and the lower pulley 34 moves upward. It can be understood that: the diameter of the through hole on the adjusting block 37 can be set larger so that the adjusting rod 39 can still move when the adjusting block 37 rotates. In this embodiment, the through hole is in a waist shape.

[0057] See Figure 6 、 Figure 7 and Figure 8, a zeroing rod adjusting assembly is connected to the back surface of the mounting base 2. The zeroing rod adjusting assembly includes a zeroing rod 45. Two parallel fixing plates 53 are provided on the back surface of the mounting base 2. A limiting space is formed between the two fixing plates 53. A through hole for the zeroing rod 45 to pass through is provided in the middle of the fixing plate 53. A spiral side edge 47 is provided in the middle of the side surface of the zeroing rod 45. An adjusting ring 50 is sleeved outside the zeroing rod 45. The adjusting ring 50 is located in the limiting space and a freely rotatable steel ball 59 is embedded in the inner side surface of the adjusting ring 50. See Figure 8 ; an open-ring-shaped piece 48 is provided at the lower end of the side surface of the zeroing rod 45. The opening of the ring-shaped piece 48 is located at the highest point of the ring-shaped piece 48, and the width of the opening is greater than the diameter of the steel ball 59; driving wheels 52 are respectively provided on both sides of the adjusting ring 50. A connecting shaft 51 is connected to the middle of the driving wheel 52. The driving wheel 52 is located in the limiting space. The fixing plate 53 is provided with a transverse sliding groove 49 that matches the connecting shaft 51. The end of the connecting shaft 51 extends into the transverse sliding groove 49. The rear end of the driving wheel 52 extends out of the fixing plate 53 and abuts against the guide rail 1. An intermediate wheel 54 is provided between one of the driving wheels 52 and the adjusting ring 50. The intermediate wheel 54 is rotatably connected to the fixing plate 53. The side surface of the intermediate wheel 54 abuts against the side surface of the adjusting ring 50; a boss 55 is provided in the middle of the back surface of the mounting base 2. A guide cylinder 44 that matches the upper end of the zeroing rod 45 is connected to the upper end of the boss 55. The boss 55 is provided with a through hole. The upper end of the zeroing rod 45 sequentially passes through the boss 55 and the guide cylinder 44. The cross section of the upper end of the zeroing rod 45 is polygonally arranged; an induction block 42 is connected to the upper end of the zeroing rod 45. A sensor 41 is connected to the upper end of the back surface of the mounting base 2. The sensor 41 is provided with an induction hole that matches the induction block 42.

[0058] This technical solution uses a zeroing rod assembly to assist in the focusing of the laser processing head 3. Currently, when the laser processing head 3 focuses, the height of the laser processing head 3 needs to be obtained. However, currently, the laser processing head 3 is not equipped with a ranging unit such as a rangefinder. Therefore, a relative height of the laser processing head 3 needs to be known, and then adjusted according to the relative height. When focusing in this embodiment, the laser processing head 3 remains stationary, and the zeroing rod 45 moves downward under the action of gravity. Since the upper cross-section of the zeroing rod 45 is polygonal and the guide cylinder 44 is adapted to it, the zeroing rod 45 moves linearly downward. At the same time, the side edge 47 of the zeroing rod 45 abuts against the steel ball 59 of the adjusting ring 50 and pushes the steel ball 59 to move along the spiral side edge 47. The steel ball 59 drives the adjusting ring 50 to rotate until the sensing block 42 abuts against the upper end of the guide cylinder 44. At this time, the sensing block 42 is just below the sensor block, the steel ball 59 still abuts against the side edge 47, and the lower end surface of the zeroing rod 45 is below the laser processing head 3. Then, the control system of the laser processing machine drives the workbench to move upward. The workbench drives the workpiece on it to move upward slowly until the workpiece contacts the zeroing rod 45. The zeroing rod 45 is pushed by the workpiece, and the zeroing rod 45 drives the sensing block 42 to move upward. The sensor 41 senses the sensing block 42 and sends a signal to the control system. The control system controls the workbench to stop rising. At this time, the height of the laser processing head 3 is the reference 0 height. Then, the control system controls the workbench to move downward a predetermined distance, and the focusing is completed.

[0059] After the focusing is completed, the control system will control the two-dimensional plane movement laser to drive the laser processing head 3 to perform two-dimensional movement work. Since the lower end surface of the zeroing rod 45 is below the laser processing head 3 at this time, during the two-dimensional movement, the zeroing rod 45 has a high probability of colliding with other foreign objects placed on the workbench, thereby damaging both the zeroing rod 45 and the foreign objects. To avoid this situation, it is necessary to retract the zeroing rod 45 during work, that is, drive the zeroing rod 45 to move upward. In this embodiment, a combined structure of an adjusting ring 50, a driving wheel 52, and an intermediate wheel 54 is used to drive the zeroing rod 45 to move upward.

[0060] See Appendix Figure 4 、 Figure 5, when the laser processing head 3 moves to the left, the two driving wheels 52 abut against the guide rail 1 and are subjected to the frictional force of the guide rail 1. The direction of this frictional force is to the right and simultaneously pushes the driving wheels 52 to move to the right. Both ends of the connecting shaft 51 of the driving wheels 52 move along the transverse sliding grooves 49 respectively and move to the right end of the transverse sliding grooves 49; the driving wheel 52 on the right is separated from the adjusting ring 50; for the convenience of understanding, in this embodiment, exemplarily, the intermediate wheel 54 is arranged on the left side of the adjusting ring 50; of course, it can also be arranged on the right side of the adjusting ring 50; the driving wheel 52 on the left abuts against the intermediate wheel 54, and then the driving wheel 52 rotates driven by the frictional force, and at the same time drives the intermediate wheel 54 to rotate. The intermediate wheel 54 drives the adjusting ring 50 to rotate. When the adjusting ring 50 rotates, the steel ball 59 moves along the side edge 47 and drives the zeroing rod 45 to move upward; for the convenience of understanding, when the laser processing head 3 moves to the left, the rotation of the driving wheel 52 driven by the frictional force is set to be clockwise. The rotation direction of the driving wheel 52 is opposite to that of the intermediate wheel 54. Therefore, the rotation direction of the intermediate wheel 54 is counterclockwise, and the rotation direction of the intermediate wheel 54 is opposite to that of the adjusting ring 50. The rotation direction of the adjusting ring 50 is clockwise. When the adjusting ring 50 rotates clockwise, the driving zeroing rod 45 moves upward.

[0061] When the laser processing head 3 moves to the right, since the two driving wheels 52 abut against the guide rail 1 and are subjected to the frictional force of the guide rail 1, the direction of this frictional force is to the left and simultaneously pushes the driving wheels 52 to move to the left. Both ends of the connecting shaft 51 of the driving wheels 52 move along the transverse sliding grooves 49 respectively and move to the left end of the transverse sliding grooves 49; the driving wheel 52 on the left is separated from the intermediate wheel 54; the driving wheel 52 on the right abuts against the adjusting ring 50, and the driving wheel 52 rotates counterclockwise. At the same time, the rotation direction of the driving wheel 52 is opposite to that of the adjusting ring 50. The rotation direction of the adjusting ring 50 is clockwise. When the adjusting ring 50 rotates clockwise, the driving zeroing rod 45 moves upward.

[0062] When the zeroing rod 45 moves upward until the ball disengages from the side edge 47, the ball will move around the lower end surface of the open-loop annular piece 48. When the ball passes through the opening of the annular piece 48, the ball will enter the lower end of the spiral side edge 47 for a short time and then move out from the lower end of the side edge 47 and move around the lower end surface of the open-loop annular piece 48 again, and so on. During this process, the lower end surface of the zeroing rod 45 is always above the lower end surface of the mounting seat and is in a hidden state.

[0063] Preferably, a spring 43 is sleeved outside the guide cylinder 44, and both ends of the spring 43 are fixedly connected to the sensing block 42 and the boss 55 respectively.

[0064] By arranging the spring 43, the force for the zeroing rod 45 to move downward can be increased, and the zeroing rod 45 can be accelerated to move downward.

[0065] Secondly, for the convenience of the free rotation of the driving wheel 52 and the intermediate wheel 54, a bearing can be provided between the wheel body of the driving wheel 52 and the connecting shaft 51, and the wheel body of the driving wheel 52 can rotate freely relative to the connecting shaft 51. The intermediate wheel 54 can adopt the same structure as the driving wheel 52.

[0066] The above content is only a preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. The content of this specification should not be construed as a limitation of the present invention.

Claims

1. A laser processing machine, comprising: Laser processing head and a lateral movement mechanism, the lateral movement mechanism comprising a laterally arranged guide rail and a lateral synchronous belt drive mechanism; the laser processing head is connected with a mounting seat, the mounting seat is slidably connected with the guide rail, and the mounting seat is connected with the synchronous belt of the lateral synchronous belt drive mechanism; characterized in that: synchronous belt connection components are respectively arranged on both sides of the mounting seat, and at least one of the synchronous belt connection components is provided with a tension adjusting structure; A zeroing rod adjusting component is connected to the back surface of the mounting seat, the zeroing rod adjusting component includes a zeroing rod, two parallel fixed plates are arranged on the back surface of the mounting seat, a limiting space is formed between the two fixed plates, a through hole for the zeroing rod to pass through is arranged in the middle of the fixed plate, a spiral side edge is arranged in the middle of the side surface of the zeroing rod, an adjusting ring is sleeved outside the zeroing rod, the adjusting ring is located in the limiting space and steel balls that can freely rotate are embedded in the inner side surface of the adjusting ring; an open-ring-shaped piece is arranged at the lower end of the side surface of the zeroing rod, the opening of the ring-shaped piece is located at the highest position of the ring-shaped piece, and the width of the opening is greater than the diameter of the steel ball; driving wheels are respectively arranged on both sides of the adjusting ring, a connecting shaft is connected to the middle of the driving wheel, the driving wheels are located in the limiting space, the fixed plate is provided with a lateral sliding groove matched with the connecting shaft, the end of the connecting shaft extends into the lateral sliding groove, the rear end of the driving wheel extends out of the fixed plate and abuts against the guide rail, an intermediate wheel is arranged between one of the driving wheels and the adjusting ring, the intermediate wheel is rotatably connected with the fixed plate, and the side surface of the intermediate wheel abuts against the side surface of the adjusting ring; a convex platform is arranged in the middle of the back surface of the mounting seat, a guide cylinder matched with the upper end of the zeroing rod is connected to the upper end of the convex platform, a through hole is arranged on the convex platform, the upper end of the zeroing rod sequentially passes through the convex platform and the guide cylinder, and the cross section of the upper end of the zeroing rod is polygonally arranged; an induction block is connected to the upper end of the zeroing rod, a sensor is connected to the upper end of the back surface of the mounting seat, and the sensor is provided with an induction hole matched with the induction block.

2. The laser processing machine according to claim 1, characterized in that: The synchronous belt connection component includes a main clamping block, a plurality of first connection holes are arranged on the side surface of the main clamping block, second connection holes matched with the first connection holes are arranged on the side surface of the mounting seat, the main clamping block is connected with a first connecting piece, one end of the first connecting piece passes through the first connection hole, the second connection hole and is connected with the mounting seat, and the connection position of the first connecting piece and the mounting seat can be adjusted; a concave hole is arranged in the middle of one side surface of the main clamping block, a sub-clamping block is arranged in the concave hole, a third connection hole is arranged on the sub-clamping block, a fourth connection hole matched with the third connection hole is arranged on the main clamping block, the main clamping block is connected with a second connecting piece, and one end of the second connecting piece passes through the fourth connection hole, the third connection hole and is connected with the sub-clamping block.

3. The laser processing machine according to claim 2, characterized in that: One or two limiting rings are sleeved on the middle of the first connecting piece. When there is one limiting ring, the limiting ring abuts against the mounting seat or the main clamping block; when there are two limiting rings, the two limiting rings respectively abut against the mounting seat and the main clamping block.

4. The laser processing machine according to claim 3, wherein: The first connecting piece is a screw rod, the first connection hole and the second connection hole are both threaded holes, external threads are respectively arranged at both ends of the screw rod, and the external threads at both ends have opposite thread directions. The two ends of the first connecting piece are respectively threadedly connected with the main clamping block and the mounting seat.

5. The laser processing machine according to claim 4, characterized in that: A limiting block is connected to the outer end of the screw rod, and the limiting block abuts against the main clamping block.

6. The laser processing machine according to claim 5, characterized in that: The screw rod is threadedly connected with the limiting block.

7. The laser processing machine according to claim 1, wherein: The upper end and the lower end of the back surface of the mounting seat are respectively provided with pulleys, and an annular groove is provided in the middle of the side surface of each pulley. The upper end surface and the lower end surface of the guide rail are respectively connected with transverse guide columns that cooperate with the pulleys, and the pulleys roll along the transverse guide columns.

8. The laser processing machine according to claim 7, wherein: A connecting shaft is connected to the middle of the pulley, and the pulley can rotate freely relative to the connecting shaft. One end of the connecting shaft is connected to the mounting seat. A counterbore corresponding to the connecting shaft is provided at the upper end or / and the lower end of the front surface of the mounting seat. An eccentric wheel is provided in the counterbore, and an eccentric hole is provided in the middle of the eccentric wheel. The mounting seat is provided with a through hole for the connecting shaft to be inserted. One end of the connecting shaft passes through the through hole and is inserted into the eccentric hole. The eccentric wheel is provided with a plurality of operation holes. At least one fastener is connected in one of the operation holes, and the fastener abuts against the bottom surface of the counterbore.

9. The laser processing machine according to claim 1, characterized in that: Upper extension columns respectively extend backward from both sides of the upper end of the back surface of the mounting seat. The upper extension columns are connected with upper pulleys. A fixed shaft and a movable block are connected to the lower end of the back surface of the mounting seat. A hinge hole is provided in the middle of the movable block and is hinged to the fixed shaft. One end of the movable block is connected with a lower pulley. The middle parts of the side surfaces of the upper pulley and the lower pulley both bulge outward to form convex rings. Guide grooves that cooperate with the convex rings are respectively provided on the upper end surface and the lower end surface of the guide rail. The other end of the movable block is movably connected with an adjusting rod, and the adjusting rod can adjust the connection position with the movable block. A convex adjusting block is provided on the back surface of the mounting seat and is located below the movable block. The adjusting block is provided with a through hole for the lower end of the adjusting rod to pass through. The lower end of the adjusting rod passes through the through hole, and an elastic member for driving the lower pulley to move upward is provided between the lower end of the adjusting rod and the adjusting block.

10. The laser processing machine according to claim 1, wherein: A spring is sleeved outside the guide cylinder, and the two ends of the spring are respectively fixedly connected with the sensing block and the convex platform.

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