Laser processing machine

Abstract

The invention relates to the technical field of laser processing, in particular to a laser processing machine. The laser machining device comprises a laser machining head and a transverse moving mechanism, and the transverse moving mechanism comprises a transversely-arranged guide rail and a transverse synchronous belt transmission mechanism; the laser processing head is connected with a mounting seat, the mounting seat is in sliding connection with the guide rail, and the mounting seat is connected with a synchronous belt of the transverse synchronous belt transmission mechanism; synchronous belt connecting assemblies are arranged on the two sides of the mounting base respectively, and at least one synchronous belt connecting assembly is provided with a tension adjusting structure. The synchronous belt connecting assemblies are arranged on the two sides of the mounting base, at least one synchronous belt connecting assembly is provided with the tension adjusting structure, the tension of the synchronous belt can be adjusted through the tension adjusting structure, and the machine cost is reduced.

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 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: 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 wheel with adjustable position is generally used. After assembling the synchronous belt mechanism, the tension of the synchronous belt is adjusted by adjusting the position of the tensioning wheel; and the setting of the tensioning wheel 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 in view of the deficiencies of the prior art. The laser engraving head of the laser processing machine has a belt tension adjustment structure, which is convenient to adjust and has low use cost.

[0005] A laser processing machine comprises: a laser processing head and a lateral movement mechanism, wherein the lateral movement mechanism comprises a lateral guide rail and a lateral 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 a synchronous belt of the lateral 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 a 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 plurality of first connection holes are provided on the side of the main clamping block, a second connection hole matching with the first connection hole is provided on the side of the mounting seat, the main clamping block is connected to a first connection member, one end of the first connection member 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 member 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 with the third connection hole, the main clamping block is connected to a second connection member, one end of the second connection member 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 have opposite rotation directions, and the two ends of the first connecting member are respectively threadedly connected to the main connecting block 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, an annular groove is provided in the middle of the side of the pulley, and the upper and lower end surfaces of the guide rail are respectively connected with transverse guide columns matching 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 is 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] Preferably, upper extension columns are respectively extended backward on both sides of the upper end of the back side of the mounting seat, and the upper extension columns are connected to the upper pulley, and the lower end of the back side of the mounting seat is connected to the fixed shaft and the movable block, the middle of the movable block is provided with a hinge hole and is hinged to the fixed shaft, one end of the movable block is connected to the lower pulley, the middle of the side surfaces of the upper pulley and the lower pulley both protrude outward to form a convex ring, the upper end surface and the lower end surface of the guide rail are respectively provided with guide grooves matching the convex ring; 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, the back side of the mounting seat is provided with a raised adjusting block, 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 upward 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 to the adjusting rod; the elastic member can be a spring, which pushes the adjusting rod to move downward, drives the adjusting block to rotate, and the lower pulley moves upward. It can be understood that the perforation diameter on the adjusting block can be set larger so that when the adjusting block rotates, the adjusting rod can still move. In this embodiment, the perforation is set in a waist shape.

[0016] Preferably, a zeroing rod adjustment assembly is connected to the back of the mounting seat, and the zeroing rod adjustment assembly includes a zeroing rod, and two parallel fixed plates are provided on the back of the mounting seat, and a limiting space is formed between the two fixed plates. 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. An adjusting ring is provided on the outer sleeve of the zeroing rod, and the adjusting ring is located in the limiting space and a steel ball that can rotate freely is embedded in the inner side of the adjusting ring; an open-loop annular sheet is provided at the lower end of the side of the zeroing rod, and the opening of the annular sheet is located at the highest point of the annular sheet, and the width of the opening is greater than the diameter of the steel ball; driving wheels are provided on both sides of the adjusting ring, and a connecting shaft is connected to the middle of the driving wheel. In the limited space, the fixed plate is provided with a transverse sliding groove that matches the connecting shaft, the end of the connecting shaft extends into the transverse 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 provided between one of the driving wheels and the adjusting ring, the intermediate wheel is rotatably connected to the fixed plate, and the side of the intermediate wheel abuts against the side of the adjusting ring; a boss is provided in the middle part of the back side of the mounting seat, the upper end of the boss is connected to a guide cylinder that matches the upper end of the zeroing rod, the boss is provided with a through hole, the upper end of the zeroing rod passes through the boss and the guide cylinder in turn, and the upper end cross-section of the zeroing rod is polygonal; the upper end of the zeroing rod is connected to a sensing block, and the upper end of the back side of the mounting seat is connected to a sensor, and the sensor is provided with a sensing hole that matches the sensing block.

[0017] Preferably, the guide cylinder outer sleeve is provided with a spring, and two 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, and at least one of the synchronous belt connection components is provided with a tension adjustment structure, through which the tension of the synchronous belt can be adjusted, thereby reducing the cost of the machine. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 A schematic diagram of the structure of the laser processing head and the mounting seat.

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

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

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

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

[0025] Figure 7 for Figure 6 A magnified schematic diagram of center A.

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

[0027] Reference numerals: 1 - guide rail; 2 - mounting seat; 3 - laser processing head; 4 - transverse guide column; 5 - auxiliary connecting plate; 6 - second synchronous wheel; 7 - main connecting plate; 8 - intermediate transmission mechanism; 9 - driving motor; 10 - first synchronous wheel; 11 - synchronous belt connecting assembly; 12 - limiting ring; 13 - first connecting piece; 14 - main clamping block; 15 - first connecting hole; 16 - auxiliary clamping block; 17 - second connecting piece; 18 - pulley; 19 - operating hole; 20 - eccentric wheel; 23 - annular groove; 24 - perforation; 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 - adjustment 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 sheet; 49 - transverse slide groove; 50 - adjusting ring; 51 - connecting shaft; 52 - driving wheel; 53 - fixing plate; 54 - intermediate wheel; 55 - boss; 56 - fourth connecting hole; 57 - second connecting hole; 58 - third connecting hole; 59 - steel ball. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with 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.

[0029] 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.

[0030] 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 drawings, and are only for the convenience of describing the present 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 should not be understood as a limitation on the present application.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] The present invention will be described in detail below with reference to the accompanying drawings. Figures 1 to 8 shown.

[0033] 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, wherein the lateral moving mechanism comprises a lateral guide rail 1 and a lateral synchronous belt transmission mechanism; the laser processing head 3 is connected to a mounting seat 2, wherein the mounting seat 2 is slidably connected to the guide rail 1, and the mounting seat 2 is connected to a synchronous belt of the lateral synchronous belt transmission mechanism; synchronous belt connecting components 11 are respectively provided on both sides of the mounting seat 2, and at least one of the synchronous belt connecting components 11 is provided with a tension adjustment structure.

[0034] See attached Figure 1 ; The mounting seat 2 in this embodiment is connected to the synchronous belt through the synchronous belt connection components 11 arranged on both sides. When the synchronous belt is specifically connected, it 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, and at the same time, the mounting seat 2 is slidably connected to the transverse guide rail 1, and the guide rail 1 will guide 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 the existing technology can be used, which will not be repeated 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.

[0035] It is understandable that the synchronous belt connection assembly 11 can adopt the following structure: the synchronous belt connection assembly 11 includes: a clamp block, a main connection hole is provided on the side of the clamp block, and a secondary connection hole is provided on the side of the mounting seat 2. The clamp 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 clamp block and the mounting seat 2. The connecting piece can be a sampling bolt, and the secondary connection hole is a threaded hole. When in use, the middle of the synchronous belt is broken and has an open-loop structure; the two ends of the broken opening are respectively clamped and connected with the synchronous belt connection assembly 11 on both sides.

[0036] 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 driving motor 9 for driving 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.

[0037] 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 attached Figure 1 For the convenience of design, an intermediate transmission mechanism 8 may be provided between the driving motor 9 and the first synchronous wheel 10. It is understandable 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.

[0038] 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, a second connection hole 57 matching with the first connection hole 15 is provided on the side of the mounting seat 2, the main clamping block 14 is connected with a first connection member 13, one end of the first connection 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 connection member 13 and the mounting seat 2 can be adjusted; a concave hole 32 is provided in the middle of one side of the main clamping block 14, a secondary clamping block 16 is provided in the concave hole 32, the secondary 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 with the third connection hole 58, the main clamping block 14 is connected with a second connection member 17, one end of the second connection member 17 passes through the fourth connection hole 56 and the third connection hole 58 to be connected with the secondary clamping block 16.

[0039] 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.

[0040] In the 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.

[0041] See also Figures 2 to 4 The middle part of the first connecting member 13 is sleeved with one or two limiting rings 12. 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.

[0042] 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 seat 2; of course, in order to prevent the first connecting member 13 from being separated from the second connecting hole 57, a fastening hole can be provided on the mounting seat 2, the fastening hole is connected to 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, and a fastener is provided in the fastening hole, the fastener is inserted into the fastening hole and abuts against the first connecting member 13. Similarly, in order to prevent the first connecting member 13 from being separated 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, and a fastener abutting against the first connecting member 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 limit ring 12 can move relative to the first connecting member 13 to adjust the position of the sleeve; for example, the first connecting member 13 is a rod, and the limit 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 limit ring 12 can move along the rod and make adaptive adjustments to maintain: the limit ring 12 abuts against the side of the mounting seat 2 or the limit ring 12 abuts against the side of the main clamping block 14.

[0043] Preferably, the first connecting member 13 is a screw, the first connecting hole 15 and the second connecting hole 57 are both threaded holes, both ends of the screw are provided with external threads, and the external threads at both ends have opposite rotation directions, and the two ends of the first connecting member 13 are respectively threadedly connected to the main connecting block and the mounting seat 2.

[0044] In this embodiment, the connecting piece connects the main clamping block 14 with the mounting seat 2, and the connecting piece can be adjusted in position; therefore, the connecting piece 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.

[0045] Preferably, the outer end of the screw rod is connected to a limit block, and the limit block abuts against the main clamping block 14. More preferably, the screw rod is threadedly connected to the limit block.

[0046] When the first connecting member 13 is a bolt or a screw, the limiting ring 12 can adopt a limiting nut, and the limiting nut is threadedly connected to the first connecting member 13. When adjusting, the bolt or the 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, so as to achieve the effect of adjusting the tension of the synchronous belt. When adjusting, the limiting nut can be used to limit the bolt or the screw from rotating at will. Secondly, the cooperation between the limiting nut and the limiting block limits the main clamping block 14, prevents the main clamping block 14 from moving along the bolt or the 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 the 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, the position of the main clamping block 14, that is, the tension of the synchronous belt, can be adjusted; at the same time, the main clamping block 14 can be restricted to prevent it from shaking along the screw, so that the laser processing head 3 can work stably.

[0047] 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.

[0048] The mounting seat 2 is slidably connected to the guide rail 1. In order to reduce wear and extend the service life of the mounting seat 2 and the guide rail 1, this embodiment adopts a roller matching method. The upper and lower ends of the back of the mounting seat 2 are respectively connected to rollers, and the rollers can roll along the transverse guide column 4 set on the guide rail 1; there is rolling friction between the pulley 18 and the transverse guide column 4, and the friction coefficient is much smaller than the sliding friction, which can reduce wear. Secondly, the transverse guide column 4 and the guide rail 1 adopt a split structure, and the transverse guide column 4 can be made of wear-resistant material, which can avoid the entire guide rail 1 from using wear-resistant material, can effectively reduce costs, and is also easy to replace.

[0049] 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 the 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, and 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.

[0050] Since an annular groove 23 is formed in the middle of the pulley 18, and the upper and lower end surfaces of the guide rail 1 are provided with transverse guide pillars 4; during assembly, the pulley 18 is generally first matched with the transverse guide pillars 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 labor-intensive, and the efficiency is relatively low; this embodiment adopts a new connection structure, and in a pair of upper and lower pulleys 18, at least one pulley 18 is connected to the eccentric wheel 20. In the structure of this embodiment, the pulley 18 can be installed on the mounting seat 2 first, and then the mounting seat 2 is assembled on 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 will drive the connecting shaft 27 to revolve. The revolution of the connecting shaft 27 will drive the pulley 18 to move in an arc and 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 the sides becomes larger and is large enough to exceed the maximum vertical height of the guide rail 1, and 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 column 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 column 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 abut against the transverse guide column 4 on the upper and lower end faces of the guide rail 1. Finally, fasteners 26 are set in a plurality of operating holes 19 to fix the eccentric wheel 20. The whole process is easy to operate.

[0051] In this embodiment, a countersunk hole is only provided 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 only provided 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.

[0052] Secondly, the operation hole 19 matched with the fastener 26 can be a threaded hole 28, and the fastener 26 is a screw, a bolt, a stud, etc.; in this embodiment, illustratively, there are 4 operation holes 19 on the eccentric wheel 20, and 2 threaded holes 28 are provided. Of course, the operation holes 19 can also be 3, 5 or 6; the threaded holes 28 can be set to 3, 4, etc. When the operation holes 19 are an even number, the number of threaded holes 28 is half of the operation holes 19, and the threaded holes 28 are arranged at intervals.

[0053] See also Figure 5 , Figure 6, upper extension columns 46 are respectively extended backward on both sides of the upper end of the back side of the mounting seat 2, and the upper extension columns 46 are connected to the upper pulley 33, and the lower end of the back side of the mounting seat 2 is connected to a fixed shaft 40 and a movable block 35, and a hinge hole is provided in the middle of the movable block 35 and is hinged to the fixed shaft 40, and one end of the movable block 35 is connected to a lower pulley 34, and the middle parts of the sides of the upper pulley 33 and the lower pulley 34 are both protruded outward to form a convex ring, and the upper end surface and the lower end surface of the guide rail 1 are respectively provided with guide grooves that match the convex ring; the other end of the movable block 35 is movably connected with an adjusting rod 39, and the adjusting rod 39 can adjust the connection position with the movable block 35, and a raised adjusting block 37 is provided on the back side of the mounting seat 2, and the adjusting block 37 is located below the movable block 35, and the adjusting block 37 is provided with a through hole for the lower end of the adjusting rod 39 to pass through, and the lower end of the adjusting rod 39 passes through the through hole and an elastic member 36 for driving the lower pulley 34 to move upward is provided between the lower end of the adjusting rod 39 and the adjusting block 37.

[0054] 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, the rubber sleeve is sleeved outside the bearing, and 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 seat 2. In this embodiment, the upper extension column 46 is used to connect the upper pulley 33, and the adjustment block 37 is connected to the lower pulley 34; so that the upper pulley 33 and the lower pulley 34 are at a relatively large distance from the back of the mounting seat 2, so that the guide structure set on the upper end face and the lower end face of the guide rail 1 is close to the middle part of the upper end face and the lower end face; in this embodiment, the upper pulley 33 and the lower pulley 34 use components such as rubber sleeves, so that the middle part of the upper pulley 33 and the lower pulley 34 is convex to form a convex ring, so the upper end face and the lower end face of the guide rail 1 are provided with guide grooves (not shown in the figure) that match the upper pulley 33 and the lower pulley 34, and the convex rings of the upper pulley 33 and the lower pulley 34 roll along the guide grooves. When the mounting seat 2 and the guide rail 1 are assembled, 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 pushes the adjustment rod 39 to move and drives the adjustment block 37 to rotate under the action of the elastic member 36, and 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 scheme of this embodiment can be convenient for assembly, and the elastic force of the elastic member 36 acting on the adjustment rod 39 can be adjusted to be smaller in the early stage of assembly, so that the operation is less difficult and the lower pulley is convenient to rotate; after the mounting seat 2 and the guide rail 1 are assembled, the elastic force of the elastic member 36 is adjusted by adjusting the position of the adjustment rod 39, so that the lower pulley 34 can have a larger abutment 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.

[0055] Preferably, the adjusting rod 39 can be a screw or a bolt, and 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 through hole diameter on the adjusting block 37 can be set larger, so that when the adjusting block 37 rotates, the adjusting rod 39 can still move. In this embodiment, the through hole is set in a waist shape.

[0056] See also Figure 6 , Figure 7 as well as Figure 8The back of the mounting seat 2 is connected with a zeroing rod adjustment assembly, which includes a zeroing rod 45. Two parallel fixed plates 53 are provided on the back of the mounting seat 2. A limiting space is formed between the two fixed plates 53. A through hole is provided in the middle of the fixed 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 steel ball 59 that can rotate freely is embedded in the inner side of the adjusting ring 50. See Figure 8 An open-loop annular sheet 48 is provided at the lower end of the side of the zero return rod 45. The opening of the annular sheet 48 is located at the highest point of the annular sheet 48, and the width of the opening is greater than the diameter of the steel ball 59. Driving wheels 52 are 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 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 matches the upper end of the zeroing rod 45, and 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 turn, and the upper end cross-section of the zeroing rod 45 is set in a polygonal shape; the upper end of the zeroing rod 45 is connected to the induction 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 matches the induction block 42.

[0057] The technical solution sets a zeroing rod assembly to assist the laser processing head 3 in focusing. Currently, when the laser processing head 3 is focusing, it is necessary to obtain the height of the laser processing head 3; however, the laser processing head 3 is not currently equipped with a distance measuring unit such as a rangefinder, so it is necessary to know a relative height of the laser processing head 3 and then adjust it according to the relative height; 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, and 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 sensor block, the steel ball 59 is still abutting 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 worktable to move upward, and the worktable drives the workpiece thereon to move slowly upward until the workpiece contacts the zeroing rod 45, and 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, and 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.

[0058] 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 combined structure of an adjustment ring 50, a driving wheel 52 and an intermediate wheel 54 is used to drive the zeroing rod 45 to move upward.

[0059] 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 the 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 transverse slide groove 49 respectively and move to the right end of the transverse 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 exemplarily 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 side abuts against the intermediate wheel 54, and then the The driving wheel 52 rotates under the drive of friction, and also 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 ease of understanding, when the laser processing head 3 moves to the left, the driving wheel 52 rotates in a clockwise direction under the drive of friction. The driving wheel 52 rotates in opposite directions to the intermediate wheel 54. Therefore, the intermediate wheel 54 rotates in a counterclockwise direction. The intermediate wheel 54 rotates in opposite directions to the adjusting ring 50. The adjusting ring 50 rotates in a clockwise direction. When the adjusting ring 50 rotates clockwise, the zeroing rod 45 is driven to move upward.

[0060] 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 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 side is separated from the middle wheel 54; the driving wheel 52 on the right side abuts against the adjusting ring 50, and the driving wheel 52 rotates counterclockwise, and at the same time, the driving wheel 52 and the adjusting ring 50 have opposite rotation directions, and the adjusting ring 50 rotates clockwise. When the adjusting ring 50 rotates clockwise, the driving zeroing rod 45 moves upward.

[0061] When the zeroing rod 45 moves upward until the ball is separated from the side edge 47, the ball will move around the lower end surface of the open ring piece 48. When the ball passes through the opening of the ring piece 48, the ball will enter the lower end of the spiral side edge 47 for a short time, then move out from the lower end of the side edge 47 and move around the lower end surface of the open ring piece 48 again, and so on. In this process, the lower end surface of the zeroing rod 45 is always located above the lower end surface of the mounting seat and is in a hidden state.

[0062] Preferably, a spring 43 is disposed 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.

[0063] 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 .

[0064] 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.

[0065] 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 will be changes in the specific implementation methods and application scopes. The content 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 moving mechanism, wherein the transverse moving mechanism comprises a transversely arranged guide rail and a transverse synchronous belt transmission 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 a synchronous belt of the transverse synchronous belt transmission mechanism; the feature is that 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; The cam is provided with a plurality of upper and lower wheels, and the upper and lower wheels are provided with a plurality of upper and lower wheels respectively.

2. The laser processing machine according to claim 1, characterized in that: The adjusting rod adopts a screw rod or a bolt, and the adjusting block is threadedly connected to the adjusting rod.

3. The laser processing machine according to claim 1, characterized in that: The transverse synchronous belt transmission mechanism includes a main connecting plate and an auxiliary connecting plate respectively connected to both sides of the guide rail. The main connecting plate is connected to a first synchronous wheel and a driving motor that drives the first synchronous wheel to rotate. The auxiliary connecting plate is connected to a second synchronous wheel. The synchronous belt is connected between the first synchronous wheel and the second synchronous wheel.

4. The laser processing machine according to claim 1, 2 or 3, 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.

5. The laser processing machine according to claim 1, 2 or 3, 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 with the first connection hole is provided on the side of the mounting seat, the main clamping block is connected to a first connection member, one end of the first connection member 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 member 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 with the third connection hole, the main clamping block is connected to a second connection member, one end of the second connection member passes through the fourth connection hole and the third connection hole to be connected to the secondary clamping block.

6. The laser processing machine according to claim 5, characterized in that: The middle part of the first connecting member is sleeved with one or two limiting rings. 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.

7. The laser processing machine according to claim 6, 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 have opposite rotation directions, and the two ends of the first connecting member are respectively threadedly connected to the main connecting block and the mounting seat.

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

9. The laser processing machine according to claim 1, characterized in that: A zeroing rod adjustment assembly is connected to the back of the mounting seat, and the zeroing rod adjustment assembly includes a zeroing rod. Two parallel fixed plates are provided on the back of the mounting seat, and a limiting space is formed between the two fixed plates. A through hole is provided in the middle of the fixed plate for the zeroing rod to pass through. A spiral side edge is provided in the middle of the side of the zeroing rod. An adjusting ring is provided on the outer sleeve of the zeroing rod, and the adjusting ring is located in the limiting space and a steel ball that can rotate freely is embedded on the inner side of the adjusting ring; an open-loop annular sheet is provided at the lower end of the side of the zeroing rod, and the opening of the annular sheet is located at the highest point of the annular sheet, and the width of the opening is greater than the diameter of the steel ball; driving wheels are 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 fixing plate is provided with a transverse groove matching with the connecting shaft, the end of the connecting shaft extends into the transverse groove, 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, and the side of the intermediate wheel abuts against the side of the adjusting ring; a boss is provided in the middle part of the back side of the mounting seat, the upper end of the boss is connected with a guide cylinder matching with the upper end of the zeroing rod, the boss is provided with a through hole, the upper end of the zeroing rod passes through the boss and the guide cylinder in turn, and the upper end cross-section of the zeroing rod is polygonal; the upper end of the zeroing rod is connected with a sensing block, and the upper end of the back side of the mounting seat is connected with a sensor, and the sensor is provided with a sensing hole matching with the sensing block.

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

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