Clamping device for a laser cutting apparatus and laser cutting apparatus

Abstract

The utility model relates to laser cutting technical field discloses a kind of clamping device and laser cutting equipment of laser cutting equipment, device includes moving support and multiple clamping components, clamping component is located in moving support, moving support is driven by power component, moving support drives clamping component and moves along the guide rail of laser cutting equipment, clamping component acts on the front and back of workpiece plate material to realize clamping positioning, realize workpiece clamping positioning, improve cutting accuracy;Clamping component is equipped with clamping interval, clamping interval contains workpiece, the side of clamping component located at the back of workpiece is fixed structure, the side of clamping component located at the front of workpiece is moving structure, moving structure shrinks clamping interval to clamp workpiece by being close to fixed structure, only need to drive moving structure to realize clamping by being close to fixed structure, fixed structure does not produce displacement, thus does not need additional drive, simple structure, the small space of activity needed, save the installation space of workpiece plate material back side.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting technology, and in particular to a clamping device and a laser cutting device. Background Technology

[0002] Laser cutting equipment is a machine that uses a high-power laser beam to cut, engrave, or mark materials. Due to its precision, efficiency, and high level of automation, laser cutting is widely used in manufacturing, automotive, aerospace, electronics, electrical appliances, and handicrafts, among other fields. Laser cutting equipment offers advantages such as high precision, high speed, high flexibility, and non-contact processing. It plays a vital role in industrial automation and has broad market demand and application prospects. Conventional laser cutting does not fix the workpiece in place during the cutting process.

[0003] Chinese Patent CN202022549953.7 discloses a bottom-clamping processing conveyor mechanism for laser processing equipment. The mechanism includes a waste collection box located below the laser cutting device and two X-axis belt conveyor frames located on either side of the waste collection box. Each X-axis belt conveyor frame is equipped with a pair of clamping cylinders. The two clamping cylinders synchronously drive a mounting plate, on which multiple clamping blocks are arranged at equal height. This device can clamp the product from multiple positions on both sides after it is positioned, thus preventing product positional vibration during laser processing and affecting processing accuracy. However, this design requires improvement.

[0004] This invention overcomes the shortcomings of the prior art by providing a clamping device and a laser cutting device that can fix the workpiece during the cutting process and improve cutting accuracy. Utility Model Content

[0005] The main objective of this utility model is to provide a clamping device for a laser cutting equipment, including a movable bracket and multiple clamping components. The clamping components are disposed on the movable bracket, which is driven by a power component. The movable bracket drives the clamping components to move along the guide rail of the laser cutting equipment.

[0006] The clamping assembly has a clamping area that accommodates the workpiece. The clamping assembly is a fixed structure on the back side of the workpiece and a movable structure on the front side of the workpiece. The movable structure moves closer to the fixed structure to reduce the clamping area and clamp the workpiece.

[0007] Optionally, the clamping assembly includes a mounting plate, a pushing member, a clamping block, and a fixed clamp. The mounting plate is connected to the movable bracket, the pushing member is disposed on the mounting plate, and the fixed clamp is disposed opposite to the clamping block. The pushing member pushes the clamping block closer to or away from the fixed clamp. The fixed clamp is the fixed structure, and the clamping block is the movable structure.

[0008] Optionally, the pusher and the clamping block are connected by a linkage mechanism. The pusher is a cylinder. The pusher is horizontally mounted on the mounting plate. The movable end of the pusher is connected to the linkage mechanism. The pusher pushes the linkage mechanism to rotate the clamping block by a predetermined angle, so that the block moves closer to or away from the fixed clamp.

[0009] Optionally, the linkage mechanism includes a horizontal rod and a vertical rod. The tail end of the vertical rod is connected to the middle of the horizontal rod. The vertical rod is perpendicular to the horizontal rod. The head end of the vertical rod is rotatably connected to the movable end of the pusher. The head end of the horizontal rod is rotatably connected to the mounting plate. The side of the tail end of the horizontal rod is fixedly connected to the clamping block.

[0010] Optionally, the clamping block is elastic, and the contact surface between the clamping block and the fixed clamp is an inclined surface.

[0011] Optionally, the fixed clamp includes a fixed plate and a support column. The first end of the fixed plate is connected to the movable bracket, and the second end of the fixed plate is connected to the support column. The support column is used to abut against the back of the workpiece.

[0012] Optionally, the movable support includes a support beam, the clamping assembly is disposed on the support beam, the two ends of the support beam are connected to vertical plates, the vertical plates are provided with V-shaped rollers, and the V-shaped rollers are matched and connected to the guide rail;

[0013] The power assembly includes a motor, a brake positioning device, and a gear. The motor is mounted on the vertical plate and is connected to the gear via a transmission. The brake positioning device acts on the gear, and the gear meshes with the rack. The rack is mounted on the guide rail and is arranged parallel to the guide rail.

[0014] Optionally, the number of clamping components is 4, with 2 clamping components forming a group, and the 2 groups of clamping components are symmetrically arranged with the middle of the movable bracket as the center.

[0015] This utility model also provides a laser cutting device, including the above-mentioned clamping device, and further including a frame and a conveyor belt, a laser cutting head and a guide rail disposed on the frame. The clamping device is disposed on the frame, and the clamping device and the laser cutting head span over the conveyor belt and move along the guide rail.

[0016] Optionally, the number of clamping devices is 2 sets, the 2 sets of clamping devices share the guide rail, and the laser cutting head is located between the 2 sets of clamping devices.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The clamping device provided by this utility model clamps and positions the workpiece plate by acting on the front and back sides of the clamping components, thereby reducing the displacement of the workpiece plate during laser cutting and improving cutting accuracy. The clamping part of the clamping component on the back side of the workpiece plate is a fixed structure, and the clamping part on the front side is a movable structure. It is only necessary to drive the movable structure to approach the fixed structure to achieve clamping. The fixed structure does not produce displacement, so no additional drive is required. The structure is simple, requires little space, and saves installation space on the back side of the workpiece plate. Attached Figure Description

[0019] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0020] Figure 1 This is a schematic diagram of an embodiment of the clamping device of this utility model;

[0021] Figure 2 This is a partially enlarged schematic diagram of embodiment A of the clamping device of this utility model;

[0022] Figure 3 This is a partially enlarged schematic diagram of embodiment B of the clamping device of this utility model;

[0023] Figure 4 This is a partially enlarged schematic diagram of embodiment C of the clamping device of this utility model;

[0024] Figure 5 This is a partial front view of an embodiment of the clamping device of this utility model;

[0025] Figure 6 This is a partial side view of an embodiment of the clamping device of this utility model;

[0026] Figure 7 This is a schematic diagram of an embodiment of the laser cutting equipment of this utility model.

[0027] Figure label:

[0028] 1-Clamping device; 11-Clamping assembly; 111-Mounting plate; 112-Pushing component; 113-Clamping block; 114-Fixed chuck; 1141-Fixed plate; 1142-Support column; 115-Linkage mechanism; 1151-Horizontal bar; 1152-Vertical bar; 12-Moving bracket; 121-Support beam; 122-Upright plate; 123-V-roller; 13-Power assembly; 131-Motor; 132-Brake positioning device; 133-Gear; 2-Guide rail; 21-Rack; 3-Frame; 4-Conveyor belt; 5-Laser cutting head. Detailed Implementation

[0029] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only. In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or implying the number of indicated technical features. Thus, unless otherwise stated, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "multiple" means two or more. The term "comprising" and any variations thereof mean non-exclusive inclusion, where one or more other features, integers, steps, operations, units, components, and / or combinations thereof may be present or added.

[0030] Furthermore, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; as a direct connection or an indirect connection through an intermediate medium, or as a connection within two components. All technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0031] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] like Figure 1-6 The diagram shown is a schematic representation of an embodiment of the clamping device provided by this utility model.

[0033] Please refer to Figure 1-6This embodiment is mainly used for clamping and positioning workpiece plates in laser cutting equipment. The embodiment includes multiple clamping assemblies 11 and a movable support 12. The clamping assemblies 11 are mounted on the movable support 12, which is driven by a power assembly 13. The movable support 12 drives the clamping assemblies 11 to move along the guide rail 2 of the laser cutting equipment. Each clamping assembly 11 has a clamping area for accommodating the workpiece. The side of the clamping assembly 11 located on the back of the workpiece is a fixed structure, while the side of the clamping assembly 11 located on the front of the workpiece is a movable structure. The movable structure moves closer to the fixed structure to reduce the clamping area and clamp the workpiece.

[0034] The clamping area of ​​the clamping assembly 11 allows the workpiece to pass through and also accommodates the conveyor belt, without affecting the conveyor belt's workpiece transport process. When the clamping assembly 11 clamps the workpiece, the fixed structure abuts against the back of the conveyor belt and thus against the back of the workpiece. The fixed structure does not shift, therefore no additional drive structure is needed, requiring little space for movement and installation, thus having minimal impact on the conveyor belt's layout. The movable bracket 12 is used to move the clamping assembly 11 along the guide rail 2 to clamp and position workpieces at different locations while avoiding collisions and interference with the laser cutting head.

[0035] When a laser cutting head cuts a workpiece, the back-and-forth movement of the servo system causes the conveyor belt to vibrate. This vibration can lead to slight displacement of the product, thus affecting cutting accuracy. This embodiment can fix the workpiece during cutting, avoiding cutting accuracy problems caused by conveyor belt vibration.

[0036] In one embodiment, the clamping assembly 11 includes a mounting plate 111, a pusher 112, a clamping block 113, and a fixed chuck 114. The mounting plate 111 is connected to the movable bracket 12. The pusher 112 is disposed on the mounting plate 111. The fixed chuck 114 is disposed opposite to the clamping block 113. The pusher 112 pushes the clamping block 113 closer to or away from the fixed chuck 114. The fixed chuck 114 is a fixed structure, and the clamping block 113 is a movable structure (rotational movement structure). The mounting plate 111 provides a mounting surface for the pusher 112 to be installed. The pusher 112 pushes the clamping block 113 closer to the fixed chuck 114 to achieve clamping and positioning of the workpiece.

[0037] Furthermore, the pusher 112 and the clamping block 113 are connected by a linkage mechanism 115. The pusher 112 is specifically a cylinder, and it is horizontally mounted on the mounting plate 111. This arrangement increases the mounting area between the pusher 112 and the mounting plate 111, improves stability, and reduces vertical space occupation. The movable end of the pusher 112 is connected to the linkage mechanism 115, which pushes the linkage mechanism 115 to move the clamping block 113 closer to or away from the fixed clamp 114. Since the pusher 112 is horizontally mounted, the linkage mechanism 115 is needed to convert the horizontal thrust into a vertical thrust, which then acts on the fixed clamp 114 below it.

[0038] Specifically, the linkage mechanism 115 includes a horizontal rod 1151 and a vertical rod 1152. The tail end of the vertical rod 1152 is connected to the middle of the horizontal rod 1151. The vertical rod 1152 is perpendicular to the horizontal rod 1151. The head end of the vertical rod 1152 is rotatably connected to the movable end of the pusher 112. The head end of the horizontal rod 1151 is rotatably connected to the mounting plate 111. The side of the tail end of the horizontal rod 1151 is fixedly connected to the clamping block 113.

[0039] The linkage mechanism 115 rotates the thrust direction of the cylinder of the pusher 112 by about 90 degrees. As the cylinder pushes the vertical rod 1152 forward, it rotates around the connection point with the pusher 112, and the horizontal rod 1151 rotates around the connection point with the mounting plate 111. The horizontal rod 1151 rotates by about 90 degrees, causing the clamping block 113 connected to its tail end to rotate at the same time and move closer to the fixed clamp 114 below, thereby clamping the workpiece.

[0040] Furthermore, the clamping block 113 is elastic, and the contact surface between the clamping block 113 and the fixed chuck 114 is an inclined surface. This inclined surface is used to compensate for the rotational error of the linkage mechanism 115, so that after the clamping block 113 rotates, the inclined surface is exactly parallel to the workpiece surface. The elasticity of the clamping block 113 can reduce damage to the workpiece during clamping.

[0041] Furthermore, the fixed clamp 114 includes a fixed plate 1141 and a support column 1142. The first end of the fixed plate 1141 is connected to the movable bracket 12, and the second end of the fixed plate 1141 is connected to the support column 1142, which is used to abut against the back of the workpiece. The fixed plate 1141 is connected to the lower side of the support beam 121 of the movable bracket 12, and the fixed plate 1141 is used to extend the support column 1142 a certain distance outside the support beam 121, corresponding to the clamping block 113 above.

[0042] In one embodiment, the movable support 12 includes a supporting beam 121, a clamping assembly 11 disposed on the supporting beam 121, and upright plates 122 connected to both ends of the supporting beam 121. The upright plates 122 are provided with V-shaped rollers 123, which are matched and connected to the guide rail 2. The guide rail 2 is specifically a V-shaped guide rail. The V-shaped rollers 123 specifically include two sets, which are located on the upper and lower sides of the guide rail 2, respectively, limiting the vertical displacement of the movable support 12.

[0043] The power assembly 13 includes a motor 131, a brake positioning device 132, and a gear 133. The motor 131 is mounted on the vertical plate 122 and is connected to the gear 133 via a transmission connection. The brake positioning device 132 acts on a rack 21, with the gear 133 meshing with it. The rack 21 is mounted on and parallel to the guide rail 2. Specifically, the motor 131 is a servo motor, driving the gear 133 to rotate. The gear 133 meshes with the rack 21, and during rotation, it drives the moving support 12 to move along the guide rail 2. During the high-speed back-and-forth movement of the laser cutting head, the workpiece may vibrate. The brake positioning device 132 is mainly used to counteract the vibration of the conveyor belt under the back-and-forth movement of the laser cutting head follow-up system, preventing vibration from affecting cutting accuracy. It also has a stopping and positioning function.

[0044] In one embodiment, there are four clamping components 11, with two clamping components 11 forming a group. The two groups of clamping components 11 are symmetrically arranged with the center of the movable bracket 12 as the center to achieve clamping and fixing of both ends of the workpiece. The more points of action, the more accurate the positioning effect. There is a certain width between the two clamping components 11 in each group to accommodate the clamping and positioning of workpieces of different widths.

[0045] like Figure 7 As shown, this utility model provides an embodiment of a laser cutting device.

[0046] Please refer to Figure 7 This embodiment includes the clamping device 1 described above, as well as a frame 3 and a guide rail 2, a conveyor belt 4, and a laser cutting head 5 disposed on the frame. The clamping device 1 is disposed on the frame 3, and the clamping device 1 and the laser cutting head 5 span over the conveyor belt 4 and move along the guide rail 2.

[0047] The conveyor belt 4 is used to transport the workpiece, the laser cutting head 5 moves along the guide rail 2 to cut the workpiece, and the clamping device 1 is used to clamp and position the workpiece when the laser cutting head 5 is cutting it. The laser cutting head 5 and the clamping device 1 share the same guide rail 2. The specific structure and function of the frame 3, the conveyor belt 4, and the laser cutting head 5 are described in detail in the applicant's prior Chinese patent applications 2024231128797 and 2024220566020, and will not be repeated here.

[0048] In one embodiment, there are two sets of clamping devices 1. The two sets of clamping devices 1 share a guide rail 2. The laser cutting head is located between the two sets of clamping devices 1. The four corners of the workpiece can be clamped and positioned by the two sets of clamping devices 1.

[0049] In summary, the clamping device embodiment provided by this utility model achieves clamping and positioning by the clamping components acting on the front and back sides of the workpiece plate, thereby reducing the displacement of the workpiece plate during laser cutting and improving cutting accuracy. The clamping part of the clamping component located on the back side of the workpiece plate is a fixed structure, while the clamping part located on the front side is a movable structure. It is only necessary to drive the movable structure to approach the fixed structure to achieve clamping. The fixed structure does not produce displacement, so no additional drive is required. The structure is simple, requires little space, and saves installation space on the back side of the workpiece plate.

[0050] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A clamping device for a laser cutting equipment, characterized in that, It includes a movable support and multiple clamping components. The clamping components are disposed on the movable support. The movable support is driven by a power component, and the movable support drives the clamping components to move along the guide rail of the laser cutting equipment. The clamping assembly has a clamping area that accommodates the workpiece. The clamping assembly is a fixed structure on the back side of the workpiece and a movable structure on the front side of the workpiece. The movable structure moves closer to the fixed structure to reduce the clamping area and clamp the workpiece.

2. The clamping device of the laser cutting equipment according to claim 1, characterized in that, The clamping assembly includes a mounting plate, a pushing member, a clamping block, and a fixed clamp. The mounting plate is connected to the movable bracket. The pushing member is disposed on the mounting plate. The fixed clamp is disposed opposite to the clamping block. The pushing member pushes the clamping block closer to or away from the fixed clamp. The fixed clamp is the fixed structure, and the clamping block is the movable structure.

3. The clamping device of the laser cutting equipment according to claim 2, characterized in that, The pusher and the clamping block are connected by a linkage mechanism. The pusher is a cylinder. The pusher is horizontally set on the mounting plate. The movable end of the pusher is connected to the linkage mechanism. The pusher pushes the linkage mechanism to drive the clamping block to rotate a predetermined angle and move closer to or away from the fixed clamp.

4. The clamping device of the laser cutting equipment according to claim 3, characterized in that, The linkage mechanism includes a horizontal rod and a vertical rod. The tail end of the vertical rod is connected to the middle of the horizontal rod. The vertical rod is perpendicular to the horizontal rod. The head end of the vertical rod is rotatably connected to the movable end of the pusher. The head end of the horizontal rod is rotatably connected to the mounting plate. The side of the tail end of the horizontal rod is fixedly connected to the clamping block.

5. The clamping device of the laser cutting equipment according to claim 4, characterized in that, The clamping block is elastic, and the contact surface between the clamping block and the fixed clamp is an inclined surface.

6. The clamping device of the laser cutting equipment according to claim 2, characterized in that, The fixed clamp includes a fixed plate and a support column. The first end of the fixed plate is connected to the movable bracket, and the second end of the fixed plate is connected to the support column. The support column is used to abut against the back of the workpiece.

7. The clamping device of the laser cutting equipment according to claim 1, characterized in that, The movable support includes a support beam, the clamping assembly is disposed on the support beam, the two ends of the support beam are connected to vertical plates, the vertical plates are provided with V-shaped rollers, and the V-shaped rollers are matched and connected to the guide rail; The power assembly includes a motor, a brake positioning device, and a gear. The motor is mounted on the vertical plate and is connected to the gear via a transmission. The brake positioning device acts on the gear, and the gear meshes with a rack. The rack is mounted on the guide rail and is arranged parallel to the guide rail.

8. The clamping device of the laser cutting equipment according to claim 1, characterized in that, The number of clamping components is 4, and every 2 clamping components are divided into 1 group. The 2 groups of clamping components are symmetrically arranged with the middle of the movable bracket as the center.

9. A laser cutting device, characterized in that, The device includes the clamping device as described in any one of claims 1-8, and further includes a frame and a conveyor belt, a laser cutting head, and a guide rail disposed on the frame. The clamping device is disposed on the frame, and the clamping device and the laser cutting head span over the conveyor belt and move along the guide rail.

10. The laser cutting equipment according to claim 9, characterized in that, The clamping device consists of two sets, which share the guide rail, and the laser cutting head is located between the two sets of clamping devices.

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