A laser processing machine

Abstract

The present invention relates to the field of laser processing technology, and in particular to a laser processing machine. The laser processing machine comprises a laser processing head and a transverse movement mechanism, wherein the transverse movement mechanism comprises a transversely arranged guide rail and a transverse synchronous belt transmission mechanism; the laser processing head is connected to a mounting base, which is slidably connected to the guide rail and connected to the synchronous belt of the transverse synchronous belt transmission mechanism; synchronous belt connection assemblies are provided on both sides of the mounting base, and at least one of the synchronous belt connection assemblies is provided with a tension adjustment structure. The mounting base of the present invention is provided with synchronous belt connection assemblies on both sides, and at least one of the synchronous belt connection assemblies is provided with a tension adjustment structure. The tension adjustment structure can be used to adjust the tension of the synchronous belt, thereby reducing the cost of the machine.

Description

[0001] This application is a divisional application with application number 2024114913339, invention name: A laser processing machine, and application date: October 24, 2024. Technical Field

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

[0003] At present, when the laser processing head of a desktop laser processing machine moves in a plane, a belt-type drive mechanism is generally used to drive the laser processing head to move horizontally. For example, the application number is: CN202110745679.7, and the invention name is: Invention Patent of Laser Processing Equipment. The patent document records that: the laser processing head is slidably connected to the track frame through a mounting seat, and the mounting seat is driven by the synchronous belt of the transmission assembly to move linearly. As we all know, when the synchronous belt transmission mechanism is assembled, when the length of the synchronous belt is long, the tension of the synchronous belt needs to be adjusted due to the influence of its own gravity; currently, a tensioning pulley with adjustable position is generally used. After the synchronous belt mechanism is assembled, the tension of the synchronous belt is adjusted by adjusting the position of the tensioning pulley; and the setting of the tensioning pulley will make the current track frame structure complicated, and the cost will also increase a lot. Therefore, it is necessary to design a low-cost adjustment structure. Summary of the Invention

[0004] The object of the present invention is to provide a laser processing machine to address the deficiencies of the prior art. The laser engraving head of the laser processing machine has a belt tension adjustment structure, which is easy to adjust and has low cost.

[0005] A laser processing machine comprises: a laser processing head and a transverse movement mechanism, wherein the transverse movement mechanism comprises a transversely arranged guide rail and a transverse synchronous belt transmission mechanism; the laser processing head is connected to 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 transmission mechanism; synchronous belt connection components are respectively provided on both sides of the mounting seat, and at least one of the synchronous belt connection components is provided with a tension adjustment structure.

[0006] Preferably, the synchronous belt connection assembly 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. The clamping block is connected to the mounting seat 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.

[0007] Preferably, the transverse 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 to the first synchronous wheel and the driving motor that drives the first synchronous wheel to rotate, the secondary connecting plate is connected to the second synchronous wheel, and the synchronous belt is connected between the first synchronous wheel and the second synchronous wheel.

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

[0009] Preferably, one or two limiting rings are sleeved on the middle part 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 abut against the mounting seat and the main clamping block respectively.

[0010] Preferably, the first connecting member is a screw, the first connecting hole and the second connecting hole are both threaded holes, both ends of the screw are provided with external threads, and the external threads at both ends rotate in opposite directions, and the two ends of the first connecting member are respectively threadedly connected to the main clamp and the mounting seat.

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

[0012] Furthermore, pulleys are respectively provided at the upper and lower ends of the back of the mounting seat, and an annular groove is provided in the middle of the side surface of the pulley. The upper and lower end surfaces of the guide rail are respectively connected to transverse guide columns that cooperate with the pulleys, and the pulley rolls along the transverse guide columns.

[0013] Preferably, a connecting shaft is connected to the middle part of the pulley, the pulley can rotate freely relative to the connecting shaft, and one end of the connecting shaft is connected to the mounting seat; more preferably, the upper end and / or the lower end of the front side of the mounting seat are provided with a countersunk hole corresponding to the connecting shaft, an eccentric wheel is provided in the countersunk hole, an eccentric hole is provided in the middle part of the eccentric wheel, the mounting seat is provided with a through hole for inserting the connecting shaft, one end of the connecting shaft passes through the through hole and is inserted into the eccentric hole, and the eccentric wheel is provided with a plurality of operating holes; a fastener is connected to at least one operating hole, and the fastener abuts against the bottom surface of the countersunk hole.

[0014] The top end face of the adjusting base is fixed with a wheel hub, and the bottom end face of the adjusting base is fixed with a wheel hub, and the wheel hub is connected with the wheel hub by a threaded cantilever traverses the longitudinal direction of the adjusting base, and the adjusting base is connected with the wheel hub on the longitudinal direction of the adjusting base.

[0015] Preferably, the adjusting rod can be a screw or bolt, and the movable block is threadedly connected to the adjusting rod. The elastic member can be a spring, which pushes the adjusting rod downward, thereby driving the adjusting block to rotate and the lower pulley to move upward. It is understood that the perforation in the adjusting block can be set larger to ensure that the adjusting rod can still move when the adjusting block rotates. In this embodiment, the perforation is arranged in a waist shape.

[0016] Preferably, the back of the mounting seat is connected to a zeroing rod adjustment assembly, and the zeroing rod adjustment assembly includes a zeroing rod, and the back of the mounting seat is provided with two parallel fixed plates, a limiting space is formed between the two fixed plates, and a through hole is provided in the middle of the fixed plate for the zeroing rod to pass through, and a spiral side edge is provided in the middle of the side of the zeroing rod, and an adjusting ring is provided on the outer sleeve of the zeroing rod, and the adjusting ring is located in the limiting space and the inner side surface of the adjusting ring is embedded with a steel ball that can rotate freely; an open-loop annular piece is provided at the lower end of the side of the zeroing rod, the opening of the annular piece is located at the highest point of the annular 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, and a connecting shaft is connected to the middle of the driving wheel. The wheelbase is shortened and the shifting mechanism is adapted to engage with the adjustment member, and the shifting mechanism is adapted to engage with the adjustment member on a rotation basis to engage with the adjustment member on a rotation basis.

[0017] Preferably, the guide cylinder outer sleeve is provided with a spring, and both ends of the spring are fixedly connected to the sensing block and the boss respectively.

[0018] Beneficial effects of the present invention: Synchronous belt connection components are provided on both sides of the mounting seat of the present invention, wherein at least one synchronous belt connection component is provided with a tension adjustment structure, and the tension of the synchronous belt can be adjusted through the tension adjustment structure, thereby reducing the cost of the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of the laser processing head and the lateral movement mechanism of this embodiment without the synchronous belt.

[0020] Figure 2 This is a structural diagram of the cooperation between the laser processing head and the mounting base.

[0021] Figure 3 for Figure 2 Schematic diagram from another perspective.

[0022] Figure 4 for Figure 2 A schematic diagram of the decomposition structure.

[0023] Figure 5 This is a schematic diagram of the second structure of the laser processing head and the mounting base.

[0024] Figure 6 This is a schematic diagram of the third structure of the laser processing head and the mounting base.

[0025] Figure 7 for Figure 6 Enlarged schematic diagram of point A in the middle.

[0026] Figure 8 A structural diagram of an adjustment ring.

[0027] Reference numerals:

[0028] 1 - Guide rail; 2 - Mounting seat; 3 - Laser processing head; 4 - Transverse guide column; 5 - Secondary connecting plate; 6 - Second synchronous pulley; 7 - Main connecting plate; 8 - Intermediate transmission mechanism; 9 - Drive 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 - Operating hole; 20 - Eccentric wheel; 23 - Annular groove; 24 - Through hole; 25 - Countersunk hole; 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 - Induction block; 43 - Spring; 44 - Guide cylinder; 45 - Zeroing rod; 46 - Upper extension column; 47 - Side edge; 48 - Annular plate; 49 - Horizontal slide; 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 DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is 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 this application and are not intended to limit this application.

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

[0031] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0032] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

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

[0034] Example 1: See Figure 1 、 Figure 2 as well as Figure 3 ; A laser processing machine, comprising: a laser processing head 3 and a lateral moving mechanism, the lateral moving mechanism comprising a transversely arranged guide rail 1 and a transverse synchronous belt transmission mechanism; the laser processing head 3 is connected to a mounting seat 2, the mounting seat 2 is slidably connected to the guide rail 1, and the mounting seat 2 is connected to the synchronous belt of the transverse synchronous belt transmission mechanism; synchronous belt connection components 11 are respectively provided 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] See attached Figure 1 The mounting seat 2 in this embodiment is connected to the synchronous belt via the synchronous belt connection components 11 provided on both sides. During the specific connection, the synchronous belt can be an open loop with a break formed in the middle, and the two ends of the break are respectively connected to the corresponding synchronous belt connection components 11. When the transverse synchronous belt transmission 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 transverse guide rail 1, and the guide rail 1 guides the mounting seat 2 to perform directional linear movement. There are many ways of sliding connection, such as the sliding connection of the guide rail slider, and existing technologies can be used, which will not be described here. In this embodiment, the synchronous belt connection components 11 on both sides are provided with tension adjustment structures, and the adjustment range is large when adjusting. Of course, different synchronous belt connection components 11 can be used on the two sides, and only one of them has a tension adjustment structure.

[0036] It is understood that the synchronous belt connection assembly 11 can adopt the following structure: the synchronous belt connection assembly 11 includes: a clamping block, a primary connection hole provided on the side of the clamping block, and a secondary connection hole provided on the side of the mounting base 2. The clamping block is connected to the mounting base 2 via a connecting member passing through the primary and secondary connection holes, and the synchronous belt is clamped between the clamping block and the mounting base 2. The connecting member can be a bolt, and the secondary connection hole is a threaded hole. During use, the synchronous belt is broken in the middle, forming an open loop structure; the two ends of the broken opening are clamped and connected to the synchronous belt connection assembly 11 on both sides.

[0037] See also Figure 1The transverse synchronous belt transmission mechanism includes a main connecting plate 7 and an auxiliary connecting plate 5 respectively connected to both sides of the guide rail 1. The main connecting plate 7 is connected to a first synchronous wheel 10 and a drive motor 9 that drives the first synchronous wheel 10 to rotate. The auxiliary connecting plate 5 is connected to a second synchronous wheel 6. The synchronous belt is connected between the first synchronous wheel 10 and the second synchronous wheel 6.

[0038] As a common technology, the transverse synchronous belt transmission mechanism includes a drive motor 9, a first synchronous wheel 10, a second synchronous wheel 6 and a synchronous belt; see the attached Figure 1 For the convenience of design, an intermediate transmission mechanism 8 may be provided between the drive motor 9 and the first synchronous wheel 10. It is understood that the intermediate transmission mechanism 8 may also be a synchronous belt transmission mechanism. This technology may be an existing technology and will not be described in detail.

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

[0040] See attached Figure 4 、 Figure 5 The synchronous belt connection assembly 11 clamps and connects the belt through the connection between the main clamping block 14 and the auxiliary clamping block 16; secondly, the synchronous belt connection assembly 11 has a tension adjustment structure. When the main clamping block 14 is connected to the side 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, and then the distance between the main clamping block 14 and the mounting seat 2 is adjusted, thereby achieving the adjustment of the use length of the synchronous belt, that is, adjusting the belt tension.

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

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

[0043] The limiting ring 12 is used to limit the depth of the first connecting member 13 inserted into the second connecting hole 57 in the mounting base 2. Of course, to prevent the first connecting member 13 from disengaging from the second connecting hole 57, a fastening hole can be provided on the mounting base 2. The fastening hole is connected to the second connecting hole 57 and is located on two adjacent side surfaces of the mounting base 2. A fastener is provided in the fastening hole, which is inserted into the fastening hole and abuts against the first connecting member 13. Similarly, to prevent the first connecting member 13 from disengaging from the first connecting hole 15, a fastening hole can be provided on one side of the main clamping block 14. The fastening hole and the first connecting hole 15 are located on two adjacent side surfaces of the main clamping block 14. A fastener is provided in the fastening hole to abut against the first connecting member 13. 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 member 13 to adjust the position of the socket; for example, the first connecting member 13 is a rod, and the limiting ring 12 is connected to the rod by interference fit; when the first connecting member 13 is adjusting the connection position with the mounting seat 2 or adjusting the connection position with the main clamping block 14, the limiting ring 12 can move along the rod and make adaptive adjustments to maintain: the limiting ring 12 abuts against the side of the mounting seat 2 or the limiting ring 12 abuts against the side of the main clamping block 14.

[0044] Preferably, the first connecting member 13 is a screw, the first connecting hole 15 and the second connecting hole 57 are both threaded holes, and both ends of the screw are provided with external threads, and the external threads at both ends rotate in opposite directions. The two ends of the first connecting member 13 are respectively threadedly connected to the main clamping block 14 and the mounting seat 2.

[0045] In this embodiment, the connecting member connects the main clamping block 14 with the mounting seat 2, and the connecting member can be adjusted in position; therefore, the connecting member can be set as a screw, and the two ends of the screw are respectively provided with threads with opposite rotation directions. The screw is respectively threadedly connected to the main connecting block and the mounting seat 2. When adjusting the position, the screw simultaneously adjusts the connection position with the main connecting block and the mounting seat 2. The connection position adjustment directions of the two places are opposite, which can speed up the adjustment of the distance between the main clamping block 14 and the mounting seat 2.

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

[0047] When the first connecting member 13 is a bolt or a screw, the limiting ring 12 can adopt a limiting nut, which is threadedly connected to the first connecting member 13. When adjusting, the bolt or screw is rotated, and the first connecting member 13 rotates relative to the mounting seat 2 and adjusts the connection position, thereby adjusting the distance between the main clamping block 14 and the mounting seat 2 to achieve the effect of adjusting the tension of the synchronous belt. During adjustment, the limiting nut is used to limit the free rotation of the bolt or screw. Secondly, the cooperation between the limiting nut and the limiting block restricts the main clamping block 14, prevents the main clamping block 14 from moving along the bolt or screw, and maintains the stability of the main clamping block 14; prevents the main clamping block 14 from moving a small distance along the bolt or screw during the lateral back and forth movement, thereby affecting the stability of the mounting seat 2 and causing instability in the operation of the laser processing head 3. Especially when the limit block is threadedly connected to the screw, it can not only realize the position adjustment of the main clamping block 14, that is, the adjustment of the tension of the synchronous belt; at the same time, it can limit the main clamping block 14 to prevent it from shaking along the screw, so that the laser processing head 3 can work stably.

[0048] See also Figure 1 as well as Figure 3 、 Figure 4 The upper and lower ends of the back side of the mounting seat 2 are respectively provided with pulleys 18, and the middle part of the side surface of the pulley 18 is provided with an annular groove 23. The upper and lower end surfaces of the guide rail 1 are respectively connected with transverse guide columns 4 that cooperate with the pulley 18, and the pulley 18 rolls along the transverse guide columns 4.

[0049] Mounting base 2 is slidably connected to guide rail 1. To reduce wear and extend the service life of mounting base 2 and guide rail 1, this embodiment utilizes rollers. Rollers are attached to the upper and lower ends of the back surface of mounting base 2, respectively, and can roll along transverse guide posts 4 provided on guide rail 1. Rolling friction occurs between pulley 18 and transverse guide posts 4, and the coefficient of friction is much lower than sliding friction, thus reducing wear. Furthermore, transverse guide posts 4 and guide rail 1 are separated, allowing them to be made of a wear-resistant material, eliminating the need for the entire guide rail 1 to be made of a wear-resistant material. This effectively reduces costs and facilitates replacement.

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

[0051] Because 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 surfaces of the guide rail 1, during assembly, the pulley 18 is generally first engaged with the transverse guide posts 4 and then secured to the mounting base 2. Due to the limited assembly space, this assembly method is very time-consuming and labor-intensive, and is relatively inefficient. In this embodiment, a new connection structure is adopted, in which at least one of the pair of upper and lower pulleys 18 is connected to the eccentric wheel 20. In this embodiment, the pulley 18 can be first mounted on the mounting base 2, and then the mounting base 2 is assembled to the guide rail 1. In this embodiment, the pulley 18 is connected to the eccentric wheel 20 through the connecting shaft 27. The eccentric wheel 20 can be operated and rotated through the operating hole 19. When the eccentric wheel 20 rotates, it drives the connecting shaft 27 to revolve. The revolution of the connecting shaft 27 drives the pulley 18 to move in an arc and can realize the movement of the pulley 18 in the vertical direction. Therefore, during assembly, the pulley 18 on the upper side and / or the pulley 18 on the lower side can be moved outward by operating the eccentric wheel 20, and the upper pulley 18 and the lower pulley 18 can be connected. The distance between the pulleys 18 on each side is increased to a distance sufficient to exceed the maximum vertical height of the guide rail 1. The mounting base 2 is then brought closer to the guide rail 1, bringing the annular groove 23 of the upper pulley 18 into contact with 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 into contact with the transverse guide post 4 on the lower end face of the guide rail 1. The mounting base 2 is then moved upward or downward, and the eccentric 20 is rotated until the upper and lower pulleys 18 abut against the transverse guide posts 4 on the upper and lower end faces of the guide rail 1. Finally, fasteners 26 are installed in the operating holes 19 to secure the eccentric 20. The entire process is easy to operate.

[0052] In this embodiment, a countersunk hole is provided only at the lower end of the mounting seat 2 and the eccentric wheel 20 is installed; it is understandable that a countersunk hole may be provided only at the upper end of the mounting seat 2 and the eccentric wheel 20 may be installed; or a countersunk hole and an eccentric wheel 20 may be provided at both the upper and lower ends of the mounting seat 2.

[0053] Secondly, the operating holes 19 that mate with the fasteners 26 can be threaded holes 28, and the fasteners 26 can be screws, bolts, studs, etc. In this embodiment, for example, the eccentric wheel 20 has four operating holes 19 and two threaded holes 28. Of course, the number of operating holes 19 can also be three, five, or six, and the number of threaded holes 28 can be three, four, etc. When there is an even number of operating holes 19, the number of threaded holes 28 is half the number of operating holes 19, and the threaded holes 28 are spaced apart.

[0054] See also Figure 5 、 Figure 6The upper and lower ends of the upper and lower pulleys 34 are respectively provided with guide grooves 39 that cooperate with the convex rings.

[0055] The upper pulley 33 and the lower pulley 34 can each 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 over the bearing. The rubber sleeve can rotate freely relative to the connecting shaft; therefore, the upper pulley 33 and the lower pulley 34 can rotate freely relative to the mounting base 2. In this embodiment, an upper extension column 46 is used to connect the upper pulley 33, and an adjustment block 37 is used to connect the lower pulley 34. This allows the upper pulley 33 and the lower pulley 34 to be relatively far away from the back of the mounting base 2, so that the guide structures provided on the upper and lower end surfaces of the guide rail 1 are close to the middle of the upper and lower end surfaces. In this embodiment, the upper pulley 33 and the lower pulley 34 use components such as rubber sleeves, so that the middle portions of the upper pulley 33 and the lower pulley 34 are convex outward to form a convex ring. Therefore, the upper and lower end surfaces of the guide rail 1 are provided with guide grooves (not shown) that cooperate with the upper pulley 33 and the lower pulley 34. The convex rings of the upper pulley 33 and the lower pulley 34 roll along the guide grooves. When the mounting base 2 and the guide rail 1 are assembled with this structure, the upper pulley 33 and the lower pulley 34 can be smoothly inserted into the upper and lower guide grooves on both sides of the guide rail 1. Then, the upper pulley 33 is inserted into the corresponding guide groove, and the lower pulley 34, under the action of the elastic member 36, pushes the adjustment rod 39 to move and drives the adjustment block 37 to rotate. The adjustment block 37 drives the lower pulley 34 to move upward and insert into the corresponding guide groove. It can be understood that the solution of this embodiment can facilitate assembly. The elastic force of the elastic member 36 on the adjustment rod 39 can be adjusted to a smaller value in the early stage of assembly, which reduces the difficulty of operation and facilitates the rotation of the lower pulley. After the mounting base 2 and the guide rail 1 are assembled, the elastic force of the elastic member 36 can be adjusted by adjusting the position of the adjustment rod 39, so that the lower pulley 34 has a greater contact force against the lower end surface of the guide rail 1, and the upper pulley 33 and the lower pulley 34 have a better 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 severely worn, the clamping force of the upper pulley 33 and the lower pulley 34 on the guide rail 1 is greatly reduced, resulting in unstable clamping; at this time, the elastic force of the elastic member 36 can be adjusted by adjusting the position of the adjusting rod 39.

[0056] Preferably, the adjustment rod 39 can be a screw or bolt, and the adjustment block 37 has a threaded through-hole that is threadedly connected to the adjustment rod 39. The elastic member 36 can be a spring, which pushes the adjustment rod 39 downward, thereby driving the adjustment block 37 to rotate and the lower pulley 34 to move upward. It is understood that the through-hole in the adjustment block 37 can be larger to ensure that the adjustment rod 39 can still move when the adjustment block 37 rotates. In this embodiment, the through-hole is designed in a waist shape.

[0057] See also Figure 6 、 Figure 7 as well as Figure 8The back of the mounting base 2 is connected to a zeroing rod adjustment assembly, which includes a zeroing rod 45. Two parallel fixing plates 53 are provided on the back of the mounting base 2. A limiting space is formed between the two fixing plates 53. A through hole is provided in the middle of the fixing plate 53 for the zeroing rod 45 to pass through. A spiral side edge 47 is provided in the middle of the side of the zeroing rod 45. An adjusting ring 50 is provided on the outer sleeve of 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 of the adjusting ring 50. Figure 8 An open ring piece 48 is provided at the lower end of the side of the zero return rod 45. The opening of the ring piece 48 is located at the highest point of the ring piece 48, and the width of the opening is greater than the diameter of the steel ball 59. A driving wheel 52 is provided on both sides of the adjusting ring 50. The middle part of the driving wheel 52 is connected to the connecting shaft 51. The driving wheel 52 is located in the limited space. The fixing plate 53 is provided with a transverse groove 49 that matches the connecting shaft 51. The end of the connecting shaft 51 extends into the transverse 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 fixed plate 53, and the side of the intermediate wheel 54 abuts against the side of the adjusting ring 50; a boss 55 is provided in the middle of the back side of the mounting seat 2, and the upper end of the boss 55 is connected to the guide cylinder 44 that cooperates with the upper end of the zeroing rod 45. The boss 55 is provided with a through hole, and the upper end of the zeroing rod 45 passes through the boss 55 and the guide cylinder 44 in sequence. The cross-section of the upper end of the zeroing rod 45 is polygonal; the upper end of the zeroing rod 45 is connected to the sensing block 42, and the upper end of the back side of the mounting seat 2 is connected to the sensor 41, and the sensor 41 is provided with a sensing hole that cooperates with the sensing block 42.

[0058] This technical solution is to set a zeroing rod assembly to assist the laser processing head 3 in focusing. At present, the laser processing head 3 needs to obtain the height of the laser processing head 3 when focusing. However, the laser processing head 3 is not equipped with a distance measuring unit such as a rangefinder. Therefore, it is necessary to know a relative height of the laser processing head 3 and then adjust it according to the relative height. In this embodiment, when focusing, the laser processing head 3 remains stationary, and the zeroing rod 45 moves downward under the action of gravity. Since the cross-section of the upper end of the zeroing rod 45 is polygonal and the guide cylinder 44 is adapted thereto, the zeroing rod 45 moves linearly downward, and at the same time, the side edge 47 of the zeroing rod 45 abuts against the steel ball 59 of the adjustment ring 50, and pushes the steel ball 59 to move along the spiral side edge 47. The steel ball 59 carries the adjustment The ring 50 rotates 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 sensing block, the steel ball 59 is still abutting against the side edge 47, and the lower end face of the zeroing rod 45 is below the laser processing head 3; then the control system of the laser processing machine drives the worktable to move upward, and the worktable drives the workpiece thereon to move slowly upward together 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 worktable to stop rising. At this time, the height of the laser processing head 3 is the reference 0 height, and then the control system controls the worktable to move downward a predetermined distance to complete the focusing.

[0059] After the focusing is completed, the control system will control the two-dimensional plane moving laser to drive the laser processing head 3 to perform two-dimensional movement. Since the lower end surface of the zeroing rod 45 is located below the laser processing head 3 at this time, during the two-dimensional movement, the zeroing rod 45 will have a high probability of colliding with other foreign objects placed on the workbench, thereby damaging 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 combination structure of an adjustment ring 50, a driving wheel 52 and an intermediate wheel 54 is used to realize the upward movement of the driving zeroing rod 45.

[0060] See attached Figure 4 、 Figure 5When 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 friction force of the guide rail 1. The direction of this friction force is rightward and simultaneously pushes the driving wheel 52 to move to the right. The two ends of the connecting shaft 51 of the driving wheel 52 move along the horizontal slide groove 49 respectively and move to the right end of the horizontal slide groove 49; the driving wheel 52 on the right side is separated from the adjusting ring 50; for ease of understanding, in this embodiment, the intermediate wheel 54 is illustratively provided on the left side of the adjusting ring 50; of course, it can also be provided on the right side of the adjusting ring 50; the driving wheel 52 on the left side abuts against the intermediate wheel 54, and then the Driven by friction, the drive wheel 52 rotates, simultaneously driving the intermediate wheel 54. The intermediate wheel 54 then rotates the adjustment ring 50. As the adjustment ring 50 rotates, the steel ball 59 moves along the side edge 47, driving the zero return rod 45 upward. For ease of understanding, when the laser processing head 3 moves leftward, the drive wheel 52 rotates clockwise due to friction. The drive wheel 52 and the intermediate wheel 54 rotate in opposite directions, so the intermediate wheel 54 rotates counterclockwise. The intermediate wheel 54 and the adjustment ring 50 rotate in opposite directions, and the adjustment ring 50 rotates clockwise. When the adjustment ring 50 rotates clockwise, the zero return rod 45 moves upward.

[0061] When the laser processing head 3 moves to the right, the two driving wheels 52 abut against the guide rail 1 and are subjected to the friction force of the guide rail 1. The direction of the friction force is leftward and simultaneously pushes the driving wheel 52 to move to the left. The two ends of the connecting shaft 51 of the driving wheel 52 move along the transverse groove 49 respectively and move to the left end of the transverse groove 49; the driving wheel 52 on the left is separated from the middle wheel 54; the driving wheel 52 on the right is abutted against the adjusting ring 50, and the driving wheel 52 rotates counterclockwise. At the same time, the driving wheel 52 and the adjusting ring 50 have opposite rotation directions. The adjusting ring 50 rotates 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 is free of the side edge 47, the ball will move around the lower end of the open ring piece 48. When the ball passes through the opening of the ring piece 48, the ball will briefly enter the lower end of the spiral side edge 47, then move out from the lower end of the side edge 47 and move around the lower end of the open ring piece 48 again, and this process will be repeated. During this process, the lower end of the zeroing rod 45 is always located above the lower end of the mounting seat, in a hidden state.

[0063] Preferably, a spring 43 is provided on the outer sleeve of the guide cylinder 44 , and two ends of the spring 43 are fixedly connected to the sensing block 42 and the boss 55 respectively.

[0064] By providing the spring 43 , the force of the zero return rod 45 moving downward can be increased, thereby accelerating the downward movement of the zero return rod 45 .

[0065] Secondly, in order to facilitate 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. The wheel body of the driving wheel 52 can rotate freely relative to the connecting shaft 51, and the intermediate wheel 54 can adopt the same structure as the driving wheel 52.

[0066] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A laser processing machine comprising: A laser processing head and a transverse movement mechanism, the transverse movement mechanism including a transversely arranged guide rail and a transverse synchronous belt transmission mechanism; the laser processing head is connected to a mounting seat, the mounting seat being slidably connected to the guide rail and connected to the synchronous belt of the transverse synchronous belt transmission mechanism; the mounting seat is characterized in that synchronous belt connecting assemblies are respectively provided on both sides of the mounting seat, and at least one of the synchronous belt connecting assemblies is provided with a tension adjustment structure; The axle up and down groove at two ends embeds respectively in two guide rails up and down of being made up of the groove on the attachment piece, and the tooth on the attachment piece is meshed with tooth on upper sprocket wheel, the lower sprocket. The lower sprocket. The lower sprocket. The lower sprocket. The lower sprocket. The lower sprocket. The lower sprocket. The lower sprocket. The lower sprocket. The adjusting rod adopts a screw or a bolt, and the movable block is threadedly connected to the adjusting rod.

2. The laser processing machine according to claim 1, wherein: The transverse 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 to the first synchronous wheel and the driving motor that drives the first synchronous wheel to rotate. The secondary connecting plate is connected to the second synchronous wheel. The synchronous belt is connected between the first synchronous wheel and the second synchronous wheel.

3. The laser processing machine according to claim 1 or 2, characterized in that: The synchronous belt connection assembly 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. The clamping block is connected to the mounting seat 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.

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

5. The laser processing machine according to claim 4, characterized in that: One or two limiting rings are sleeved on the middle part 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 abut against the mounting seat and the main clamping block respectively.

6. The laser processing machine according to claim 5, characterized in that: The first connecting member is a screw, the first connecting hole and the second connecting hole are both threaded holes, both ends of the screw are provided with external threads, and the external threads at both ends rotate in opposite directions, and the two ends of the first connecting member are respectively threadedly connected to the main clamping block and the mounting seat.

7. The laser processing machine according to claim 6, characterized in that: The outer end of the screw rod is connected to a limiting block, and the limiting block abuts against the main clamping block.

8. The laser processing machine according to claim 1, wherein: The back of the mounting seat is connected to a zeroing rod adjustment assembly, and the zeroing rod adjustment assembly includes a zeroing rod, and the back of the mounting seat is provided with two parallel fixed plates, a limiting space is formed between the two fixed plates, and a through hole is provided in the middle of the fixed plate for the zeroing rod to pass through, and a spiral side edge is provided in the middle of the side of the zeroing rod, and an adjusting ring is provided on the outer sleeve of the zeroing rod, which is located in the limiting space and the inner side of the adjusting ring is embedded with a steel ball that can rotate freely; an open-loop annular piece is provided at the lower end of the side of the zeroing rod, the opening of the annular piece is located at the highest point of the annular 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, and a connecting shaft is connected to the middle of the driving wheel. The driving wheel is located in the limiting space The cam is secured to the chassis and is engageable with the guide rail, the cam being secured to the chassis and engageable with the guide rail.

9. The laser processing machine according to claim 8, characterized in that: The outer sleeve of the guide cylinder is provided with a spring, and two ends of the spring are fixedly connected to the induction block and the boss respectively.

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