Sealing Z-axis device for double-table-board laser cutting machine

Abstract

The utility model relates to a sealing Z-axis device for a double-table-board laser cutting machine and the double-table-board laser cutting machine. The sealing Z-axis device comprises a moving assembly, a laser head mounting assembly and a sealing assembly. The moving assembly comprises a driving unit and a connecting unit which are arranged on a machine head of the laser cutting machine, and the driving unit is connected with the connecting unit so as to drive the connecting unit to move in the vertical direction. The connecting unit is provided with an avoiding notch, and when the connecting unit moves to the uppermost end, the driving unit is partially located in the avoiding notch. And the laser head mounting assembly is connected with the connecting unit. The sealing assembly is connected with a machine head of the laser cutting machine, the connecting unit is located in the sealing assembly, and the laser head mounting assembly is in sliding sealing connection with the sealing assembly. When the connecting unit moves to the uppermost end, the driving unit is partially located in the avoiding notch, interference between the driving unit and the connecting unit is prevented, and the stroke of the connecting unit is maximized when it is guaranteed that the length of the guide rail is fixed. And the sealing assembly reduces smoke dust and waste residues entering the device.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cutting machines, and in particular to a sealed Z-axis device for a double-table laser cutting machine and the double-table laser cutting machine. Background Art

[0002] Laser cutting machine is to focus the laser emitted from the laser into a high power density laser beam through the optical path system. The laser beam irradiates the surface of the workpiece, causing the workpiece to reach the melting point or boiling point, and at the same time, the high-pressure gas coaxial with the beam blows away the molten or vaporized metal.

[0003] In the prior art, laser cutting machines generate a large amount of smoke and sputtered waste during the product cutting process, which can easily lead to dust accumulation inside the machine head and damage the internal pipe lines, affecting the performance of the transmission mechanism and the cutting accuracy, and greatly reducing the service life of the equipment; in addition, most mid-to-high-end laser cutting machines use an exchange table structure, with a large distance between the two tables in the vertical direction. The existing ordinary sealed Z-axis structure cannot meet the requirements for double-table use. When in the lower table position, there is a large gap between the head and the lower table or the lower table position cannot be reached. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a sealed Z-axis device for a double-table laser cutting machine and a double-table laser cutting machine, which solve the technical problems of poor sealing effect of the machine head and a large gap between the machine head and the lower table when in the lower table position or the inability to reach the lower table position.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the utility model of the sealed Z-axis device for the double-table laser cutting machine comprises:

[0008] A moving assembly, the moving assembly comprising a driving unit and a connecting unit arranged on the head of the laser cutting machine, the driving unit being connected to the connecting unit to drive the connecting unit to move in a vertical direction; an avoidance notch is arranged on the connecting unit, and a portion of the driving unit is located in the avoidance notch when the connecting unit moves to the uppermost end;

[0009] A laser head mounting assembly, the laser head mounting assembly being connected to the connecting unit;

[0010] A sealing assembly is connected to the head of a laser cutting machine, the connecting unit is located in the sealing assembly, and the laser head mounting assembly is connected to the sealing assembly in a sliding sealing manner.

[0011] Optionally, the sealing assembly includes a sheet metal cover and a steel belt, the sheet metal cover is arranged on the head of the laser cutting machine, a first strip hole is arranged on the sheet metal cover, and the steel belt covers the first strip hole.

[0012] Optionally, a second strip-shaped hole is opened on the sheet metal cover, and the second strip is detachably covered with a side panel sheet metal.

[0013] Optionally, the laser head mounting assembly comprises a sliding unit and a mounting unit connected to each other;

[0014] The sliding unit is connected to the connecting unit, the steel belt is slidably sleeved on the sliding unit, and the width of the mounting unit is smaller than the width of the sliding unit.

[0015] Optionally, the sliding unit includes a frame and a slide, the frame is connected to the connecting unit via the first strip hole, the slide is disposed on the frame, the steel belt is slidably connected to the frame and the steel belt covers the slide.

[0016] Optionally, the sliding surface in contact with the steel belt is a curved surface.

[0017] Optionally, the driving unit comprises a motor, a lead screw and guide rails arranged in pairs, which are arranged on the head of the laser cutting machine, and the motor is connected to the lead screw;

[0018] The connecting unit is slidably connected to the guide rail, and the connecting unit is connected to the lead screw.

[0019] Optionally, the connecting unit includes a first connecting arm, a second connecting arm and a connecting plate;

[0020] One end of each of the first connecting arm and the second connecting arm is connected to the connecting plate, the first connecting arm and the second connecting arm are parallel to each other, and the first connecting arm and the second connecting arm are slidably connected to a pair of the guide rails in a one-to-one correspondence;

[0021] The first connecting arm and the second connecting arm are both provided with convex ridges, and the convex ridges are detachably connected to the laser head mounting assembly;

[0022] The connecting plate is connected to the lead screw, and a connecting position is away from a lower edge of the connecting plate.

[0023] Optionally, the sealed Z-axis device for a dual-table laser cutting machine further includes a stroke sensing component;

[0024] A groove is provided on the side surface of the second connecting arm, and the travel sensing component is arranged in the groove.

[0025] Furthermore, a double-table laser cutting machine includes a main body and the sealed Z-axis device as described above.

[0026] (III) Beneficial effects

[0027] The connection unit is provided with an avoidance notch. When the connection unit moves to the uppermost end, the driving unit is partially located in the avoidance notch to prevent interference between the driving unit and the connection unit. The travel of the connection unit is maximized while ensuring a certain length of the guide rail, thereby increasing the vertical movement distance of the connection unit. The laser head mounting assembly is used to install the laser head. The laser head mounting assembly is connected to the connection unit. The driving unit drives the laser head mounting assembly to move through the connection unit, thereby driving the laser head to move. The structural design of the connection unit increases the vertical movement distance of the laser head, so that the laser head can accurately reach two countertops, meet the requirements for the use of double countertops, and avoid the situation where there is a large gap between the laser head and the lower countertop or the lower countertop position cannot be reached when the laser head is in the lower countertop position. The sealing assembly is connected to the head of the laser cutting machine. The connection unit is located in the sealing assembly. The laser head mounting assembly and the sealing assembly are connected in a sliding seal to reduce the entry of smoke and waste into the device, protect the internal wires and pipes of the device, and increase the smoothness and service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of a sealed Z-axis device for a double-table laser cutting machine of the utility model;

[0029] Figure 2 This is a schematic diagram of the internal structure of the sealed Z-axis device for a double-table laser cutting machine of the utility model;

[0030] Figure 3 It is a structural schematic diagram of a laser head mounting assembly of a sealed Z-axis device for a double-table laser cutting machine of the utility model;

[0031] Figure 4 The utility model is a schematic structural diagram of a connection unit of a sealed Z-axis device for a double-table laser cutting machine.

[0032] [Description of Reference Numerals]

[0033] 1: steel belt; 2: drag chain bracket; 3: laser head installation assembly; 31: slide; 4: sheet metal cover; 5: side sheet metal; 6: machine head; 7: connection unit; 71: first connecting arm; 72: second connecting arm; 8: bracket; 9: induction switch; 10: steel belt pressure plate. DETAILED DESCRIPTION

[0034] In order to better explain the utility model and facilitate understanding, the utility model is described in detail below with reference to the accompanying drawings and through specific implementation methods. Figure 1 The orientation is used as a reference.

[0035] Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0036] like Figure 1-4 As shown, the utility model provides a sealed Z-axis device for a double-table laser cutting machine, which is used to control the laser head of the laser cutting machine to move in the Z-axis direction (i.e., the vertical direction). Among them, the sealed Z-axis device for the double-table laser cutting machine includes a moving assembly, a laser head mounting assembly 3, and a sealing assembly. The moving assembly includes a driving unit and a connecting unit 7 arranged on the head 6 of the laser cutting machine, and the driving unit is connected to the connecting unit 7 to drive the connecting unit 7 to move in the vertical direction. An avoidance gap is provided on the connecting unit 7. When the connecting unit 7 moves to the uppermost end, the driving unit is partially located in the avoidance gap to prevent interference between the driving unit and the connecting unit 7, and maximize the stroke of the connecting unit 7 while ensuring that the length of the guide rail is constant, thereby increasing the movement distance of the connecting unit 7 in the vertical direction. The laser head mounting assembly 3 is used to install the laser head, and the laser head mounting assembly 3 is connected to the connecting unit 7. The driving unit drives the laser head mounting assembly 3 to move through the connecting unit 7, thereby driving the laser head to move. The structural design of the connection unit 7 increases the vertical movement distance of the laser head, so that the laser head can accurately reach two countertops, meet the use requirements of the double countertops, and avoid the situation where there is a large gap between the laser head and the lower countertop or the laser head cannot reach the lower countertop position when the laser head is in the lower countertop position. The sealing component is connected to the head 6 of the laser cutting machine, and the connection unit 7 is located in the sealing component. The laser head mounting component 3 is connected to the sealing component in a sliding seal, which reduces the entry of smoke and waste into the device, protects the internal lines and pipelines of the device, and increases the smoothness of the equipment and its service life.

[0037] See also Figure 1The sealing assembly includes a sheet metal cover 4 and a steel belt 1. A first strip hole is provided on the sheet metal cover 4. The laser head mounting assembly 3 is connected to the connecting unit 7 through the first strip hole. The steel belt 1 covers the first strip hole. The laser head mounting assembly 3 is slidably and sealedly connected to the steel belt 1 to prevent smoke and waste residue from entering the interior of the device through the first strip hole. A second strip hole is provided on the sheet metal cover 4. The second strip hole is detachably covered with a side panel sheet 5 to facilitate maintenance, replacement and adjustment of the internal structure of the device. Furthermore, a second strip hole is provided on the right side of the sheet metal cover 4, which is designed as a split structure. The side panel sheet 5 is fixed to the sheet metal cover 4 and the machine head 6 by screws to cover the second strip hole.

[0038] In a specific implementation, the sheet metal cover 4 is designed as an integrated structure surrounding the front end of the machine head 6, leaving only space for installing the drive unit at the top to ensure the sealing effect, and is fixed at both sides and the top by screws; when fixed at both sides, a step with the same thickness of the sheet metal is left on the side of the machine head 6 to install the sheet metal cover 4, ensuring that the outer plane of the sheet metal cover 4 is on the same plane as the outer plane of the machine head 6 after installation, and other installation holes on the machine head 6 are avoided by opening holes in the sheet metal cover 4. Furthermore, a certain width of sheet metal is left at the top and bottom of the front surface of the sheet metal cover 4 as the installation position of the steel belt pressing plate 10, and the steel belt 1 is installed on the upper surface of the sheet metal cover 4 by screws.

[0039] The laser head mounting assembly 3 includes a sliding unit and a mounting unit connected to each other, wherein the sliding unit is used to connect with the connecting unit 7 and move with the connecting unit 7. The steel belt 1 is slidably sleeved on the sliding unit. The mounting unit extends downward from the sliding unit to increase the stroke of the laser head in the Z-axis direction to meet the lower table cutting stroke requirements of the double-table equipment. The width of the mounting unit is smaller than the width of the sliding unit, and the mounting unit structure is narrowed to avoid interference with the side of the beam when cutting the lower table.

[0040] Furthermore, the sliding unit includes a frame and a slide 31, the frame is connected to the connection unit 7 through a first strip hole, the slide 31 is arranged on the frame, the steel belt 1 is slidably connected to the frame and the steel belt 1 covers the slide 31, and the surface in contact with the steel belt 1 is an arc surface. Specifically, a first gap is arranged between the upper side of the slide 31 and the frame, and a second gap is arranged between the lower side of the slide 31 and the frame. The steel belt 1 passes through the frame through the first gap, bypasses the slide 31, and then passes through the frame through the second gap, and the slide 31 is slidably connected to the steel belt 1. In particular, the slide 31 is designed as a smooth arc surface structure with a high middle and low ends, which pulls the steel belt 1 in and out and reduces friction. The middle of the slide 31 is designed as a hollow structure to reduce the contact area between the steel belt 1 and the covering surface. In a preferred embodiment, the laser head mounting assembly 3 is processed after integral casting, and the surfaces of the slide 31 corresponding to the first gap and the second gap are provided with a guide platform with a groove shape to guide and press down the steel belt 1 so that the steel belt 1 is tightly attached to the surface of the sheet metal cover 4.

[0041] In particular, the sheet metal width left at the top and bottom of the upper surface of the sheet metal cover 4 must meet the following conditions: when the frame runs to the bottom of the stroke, the lower side of the slide 31 should be sufficiently far from the sheet metal at the bottom of the front surface of the sheet metal cover 4 to facilitate the insertion of the steel strip 1 into the second gap; similarly, when the laser head mounting assembly 3 runs to the top of the stroke, the upper side of the slide 31 should be sufficiently far from the sheet metal at the top of the front surface of the sheet metal cover 4. This condition is used to adjust the sheet metal width left at the top and bottom of the upper surface of the sheet metal cover 4 and the specific length and position of the slide 31 on the frame.

[0042] See also Figure 1-Figure 4 The driving unit includes a motor, a lead screw and a pair of guide rails arranged on the head 6 of the laser cutting machine, and the motor is connected to the lead screw. The connecting unit 7 is slidably connected to the guide rail, and the connecting unit 7 is connected to the lead screw. The motor drives the connecting unit 7 to move in the vertical direction through the lead screw, and the guide rails arranged in pairs are used to guide the connecting unit 7 to improve the stability of the movement of the connecting unit 7. The lead screw is preferably a ball screw, which is fixed to the head 6 through a ball screw mounting seat. The connecting unit 7 is connected to the lead screw, the guide rail, and the slider by screws, so that the connecting unit 7 can move up and down along the Z-axis direction.

[0043] The connecting unit 7 includes a first connecting arm 71, a second connecting arm 72 and a connecting plate. One end of the first connecting arm 71 and the second connecting arm 72 are connected to the connecting plate, and the first connecting arm 71 and the second connecting arm 72 are parallel to each other. The first connecting arm 71 and the second connecting arm 72 are slidably connected to a pair of guide rails in a one-to-one correspondence. In order to ensure the stability and strength of actual use, the distance between the first connecting arm 71 and the second connecting arm 72 is as large as possible. The first connecting arm 71, the connecting plate and the second connecting arm 72 are sequentially connected to form a U-shaped structure, and the middle space of the U-shaped structure is an avoidance gap. When the connecting unit 7 moves to the topmost origin position, the middle space of the U-shaped structure can effectively avoid the transmission seat, and the Z-axis stroke is increased when the guide rail length is constant. The connecting plate is connected to the lead screw on one side facing the lead screw, and the connection position is far away from the lower edge of the connecting plate. When reaching the lower table installation position, the upper side of the connecting plate and the installation position of the lower slider can be kept above the end of the lead screw stroke, maximizing the stroke when the guide rail length is constant.

[0044] The first connecting arm 71 and the second connecting arm 72 are both provided with ridges, and the ridges are detachably connected to the frame, and the gap between the ridges and the frame is the installation space of the steel belt 1 and the sheet metal cover 4. Specifically, the frame is connected to the first connecting arm 71 and the second connecting arm 72 by screws, and the fixing holes are set as step holes, and at the same time, the raised key structure on the frame is stuck inside the key slots of the first connecting arm 71 and the second connecting arm 72. The drag chain is installed on the frame through the drag chain bracket 2. Furthermore, after the screws are installed in the fixing holes, the nuts are lower than the upper surface of the slide 31 to avoid friction between the steel belt 1 and the nuts.

[0045] See also Figure 1 The sealed Z-axis device for a double-table laser cutting machine also includes a stroke sensing component. A groove is provided on the side of the second connecting arm 72, and the stroke sensing component is arranged in the groove to avoid interference between the stroke sensing component and the sheet metal cover 4. The second strip hole completely exposes the stroke sensing component from top to bottom, and the adjustment of the stroke sensing component is convenient by removing the side surrounding sheet metal 5. Specifically, the stroke sensing component includes a bracket 8 and a sensing switch 9 that sense each other. The sensing switch 9 is fixed on the machine head 6, and the bracket 8 is installed in the groove.

[0046] In addition, the utility model also provides a double-table laser cutting machine, which includes a main body and a sealed Z-axis device.

[0047] In the description of the present utility model, it should be understood that 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0050] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0051] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A sealed Z-axis device for a double-table laser cutting machine, characterized in that: The sealed Z-axis device for a double-table laser cutting machine comprises: A moving assembly, the moving assembly comprising a driving unit and a connecting unit (7) arranged on a head (6) of a laser cutting machine, the driving unit being connected to the connecting unit (7) to drive the connecting unit (7) to move in a vertical direction; an escape notch is arranged on the connecting unit (7), and when the connecting unit (7) moves to the uppermost end, a portion of the driving unit is located in the escape notch; A laser head mounting assembly (3), the laser head mounting assembly (3) being connected to the connecting unit (7); A sealing component is connected to a head (6) of a laser cutting machine, the connecting unit (7) is located in the sealing component, and the laser head mounting component (3) is connected to the sealing component in a sliding sealing manner.

2. The sealed Z-axis device for a double-table laser cutting machine according to claim 1, characterized in that: The sealing assembly comprises a sheet metal cover (4) and a steel belt (1); the sheet metal cover (4) is arranged on a head (6) of a laser cutting machine; a first strip-shaped hole is arranged on the sheet metal cover (4); and the steel belt (1) covers the first strip-shaped hole.

3. The sealed Z-axis device for a double-table laser cutting machine according to claim 2, characterized in that: The sheet metal cover (4) is provided with a second strip-shaped hole, and the second strip is detachably covered with a side surrounding sheet metal (5).

4. The sealed Z-axis device for a dual-table laser cutting machine according to claim 2, characterized in that: The laser head mounting assembly (3) comprises a sliding unit and a mounting unit which are connected to each other; The sliding unit is connected to the connecting unit (7), the steel belt (1) is slidably sleeved on the sliding unit, and the width of the mounting unit is smaller than the width of the sliding unit.

5. The sealed Z-axis device for a double-table laser cutting machine according to claim 4, characterized in that: The sliding unit comprises a frame and a slide (31); the frame is connected to the connecting unit (7) via the first strip hole; the slide (31) is arranged on the frame; the steel belt (1) is slidably connected to the frame and the steel belt (1) covers the slide (31).

6. The sealed Z-axis device for a double-table laser cutting machine according to claim 5, characterized in that: The surface of the sliding member in contact with the steel belt (1) is a curved surface.

7. The sealed Z-axis device for a dual-table laser cutting machine according to claim 1, characterized in that: The driving unit comprises a motor, a lead screw and guide rails arranged in pairs, which are arranged on a head (6) of the laser cutting machine, and the motor is connected to the lead screw; The connecting unit (7) is slidably connected to the guide rail, and the connecting unit (7) is connected to the lead screw.

8. The sealed Z-axis device for a double-table laser cutting machine according to claim 7, characterized in that: The connecting unit (7) comprises a first connecting arm (71), a second connecting arm (72) and a connecting plate; One end of each of the first connecting arm (71) and the second connecting arm (72) is connected to the connecting plate, the first connecting arm (71) and the second connecting arm (72) are parallel to each other, and the first connecting arm (71) and the second connecting arm (72) are slidably connected to a pair of guide rails in a one-to-one correspondence; The first connecting arm (71) and the second connecting arm (72) are both provided with ridges, and the ridges are detachably connected to the laser head mounting assembly (3); The connecting plate is connected to the lead screw, and a connecting position is away from a lower edge of the connecting plate.

9. The sealed Z-axis device for a dual-table laser cutting machine according to claim 8, characterized in that: The sealed Z-axis device for the dual-table laser cutting machine also includes a stroke sensing component; A groove is provided on the side surface of the second connecting arm (72), and the travel sensing component is arranged in the groove.

10. A double-table laser cutting machine, characterized in that: The dual-table laser cutting machine includes a main body and a sealed Z-axis device as described in any one of claims 1-9.

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