A positioning device for laser marking

Abstract

The utility model provides a kind of positioning device for laser marking belongs to laser marking equipment technical field, the positioning device for laser marking has bottom plate, two risers are equipped on bottom plate, left riser is fixedly installed on bottom plate, right riser is transversely slidably connected on bottom plate, the opposite side of two risers is equipped with the rotary plate of rotary connection;The right wall of left rotary plate is fixedly installed with positioning ring, three equidistantly arranged arc plates are synchronously slidably connected on positioning ring, cylindrical rod of horizontal movement is equipped in positioning ring, and multiple groups of moving components are equipped between arc plate and cylindrical rod;The utility model is used to solve the technical problem that workpiece part position can possibly cause laser marking to be shielded, leading to marking not complete or needing to adjust position when marking when rotary body workpiece is marked by chuck positioning mode.

Description

Technical Field

[0001] This utility model belongs to the field of laser marking equipment technology, and more specifically, relates to a positioning device for laser marking. Background Technology

[0002] Laser marking technology is one of the largest application areas of laser processing. Laser marking is a marking method that uses high-energy-density lasers to locally irradiate the workpiece, causing the surface material to vaporize or undergo a chemical reaction that changes color, thereby leaving a permanent mark.

[0003] The utility model patent with application number CN201821360155.6 (publication number CN208800920U) discloses an auxiliary device for marking small pipe fittings, including a base plate. One end of the base plate is provided with a chuck base and the other end is provided with a guide rail. A chuck shaft is provided laterally on the chuck base. A large pulley is installed at the outer end of the chuck shaft and a chuck is installed at the inner end. The large pulley is connected to a servo motor through belt drive. A sliding mechanism is provided on the guide rail. A pin is provided laterally on the sliding mechanism. The pin cooperates with the chuck to clamp the workpiece horizontally.

[0004] When laser marking rotating workpieces (such as cylinders), a three-jaw chuck is generally used for clamping and positioning, so that one end of the workpiece extends into the three-jaw chuck. The existing positioning method is in contact with the outer circumferential surface of the workpiece. The part of the workpiece involved in the positioning work may block the laser marking, resulting in incomplete marking or the need to adjust the position during marking. Utility Model Content

[0005] In view of this, the present invention provides a positioning device for laser marking, which solves the technical problem that when marking rotating workpieces, the workpiece positioning method using a chuck may cause partial obstruction of laser marking, resulting in incomplete marking or the need to adjust the position during marking.

[0006] This utility model is implemented as follows:

[0007] This utility model provides a positioning device for laser marking, which has a base plate, wherein the base plate is provided with two upright plates, the left upright plate is fixedly installed on the base plate, the right upright plate is slidably connected to the base plate, and a rotating plate is provided on the opposite side of the two upright plates for rotational connection.

[0008] A positioning ring is fixedly installed on the right wall of the rotating plate on the left. Three equidistant arc-shaped plates are synchronously slidably connected to the positioning ring. A cylindrical rod that moves laterally is provided inside the positioning ring. Multiple sets of moving components are provided between the arc-shaped plates and the cylindrical rod.

[0009] Based on the above technical solution, the positioning device for laser marking of this utility model can be further improved as follows:

[0010] Furthermore, the moving component has an outer inclined block and an inner inclined block with parallel and opposite inclined surfaces, the inner inclined block being slidably connected to the outer inclined block;

[0011] The inner inclined block is fixedly installed on the cylindrical rod, and the outer inclined block is fixedly installed on the inner wall of the arc-shaped plate.

[0012] Furthermore, guide grooves parallel to the inclined plane are provided on both triangular planes of the inner inclined block, and two mirror-shaped guide plates are fixedly installed on the inclined surface of the outer inclined block. The end of the guide plate parallel to the inclined plane is inserted into the guide groove on the same side.

[0013] Furthermore, the positioning ring has three horizontally penetrating positioning grooves, each containing a positioning rod that is slidably connected to the center of the left wall of the arc-shaped plate.

[0014] Furthermore, the left wall of the arc-shaped plate abuts against the right wall of the positioning ring, and a positioning piece is fixedly installed at the left end of the positioning rod, the positioning piece abutting against the left wall of the positioning ring.

[0015] Furthermore, each of the upright plates has a through hole, and a rotating shaft is rotatably connected to the through hole via a bearing. The rotating shaft is fixedly mounted on the rotating plate and is coaxial with the rotating plate.

[0016] Compared with existing technologies, the advantages of the positioning device for laser marking provided by this utility model are:

[0017] This positioning device achieves workpiece positioning by having an arc-shaped plate abut against the inner wall of the workpiece and a rotating plate and positioning ring abut against the end face of the workpiece. It also allows the workpiece to rotate in place without obstructing the outer wall of the workpiece, thus avoiding the inconvenience of marking operations caused by partial obstruction. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a front view of the overall structure of a positioning device for laser marking;

[0020] Figure 2Axonometric drawing of the positioning ring and its connected structure;

[0021] Figure 3 Axonometric drawing of an arc-shaped plate and its connected outer inclined blocks;

[0022] Figure 4 Axonometric drawing of the rotating shaft and the inner inclined block corresponding to an arc plate;

[0023] Figure 5 Axonometric drawing with the cylindrical rod at the leftmost end;

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Base plate; 11. Cylinder B; 2. Vertical plate; 21. Rotating shaft; 22. Rotating plate; 23. Cylinder A; 24. Reinforcing plate; 25. Motor base; 26. Motor; 27. Connecting rod; 28. Cylinder base; 3. Positioning ring; 31. Arc plate; 32. Cylindrical rod; 33. Outer inclined block; 34. Inner inclined block; 35. Guide groove; 36. Guide plate; 41. Positioning groove; 42. Positioning rod; 43. Positioning piece. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Example

[0031] like Figure 1-4 As shown, this utility model provides a positioning device for laser marking, which has a base plate 1, wherein two upright plates 2 are provided on the base plate 1, the left upright plate 2 is fixedly installed on the base plate 1, and the right upright plate 2 is slidably connected to the base plate 1 laterally, and a rotating plate 22 is provided on the opposite side of the two upright plates 2.

[0032] A positioning ring 3 is fixedly installed on the right wall of the left rotating plate 22. Three equally spaced arc plates 31 are synchronously slidably connected to the positioning ring 3. A cylindrical rod 32 that moves laterally is provided inside the positioning ring 3. Multiple sets of moving components are provided between the arc plates 31 and the cylindrical rod 32.

[0033] Optionally, in the above technical solution, the moving component has an outer inclined block 33 and an inner inclined block 34 with parallel and opposite inclined surfaces, and the inner inclined block 34 is slidably connected to the outer inclined block 33.

[0034] The inner inclined block 34 is fixedly installed on the cylindrical rod 32, and the outer inclined block 33 is fixedly installed on the inner wall of the arc plate 31.

[0035] Optionally, in the above technical solution, guide grooves 35 parallel to the inclined plane are provided on both triangular planes of the inner inclined block 34, and two mirror-shaped guide plates 36 are fixedly installed on the inclined surface of the outer inclined block 33. The end of the guide plate 36 parallel to the inclined plane is inserted into the guide groove 35 on the same side.

[0036] Optionally, in the above technical solution, the positioning ring 3 is provided with three horizontally through positioning grooves 41, and each positioning groove 41 is slidably connected with a positioning rod 42, which is fixedly connected to the middle of the left wall of the arc plate 31.

[0037] Optionally, in the above technical solution, the left wall of the arc plate 31 abuts against the right wall of the positioning ring 3, and the left end of the positioning rod 42 is fixedly installed with a positioning piece 43, which abuts against the left wall of the positioning ring 3.

[0038] Optionally, in the above technical solution, each of the upright plates 2 is provided with a through hole, and a rotating shaft 21 is rotatably connected to the through hole through a bearing. The rotating shaft 21 is fixedly installed on the rotating plate 22 and is coaxial with the rotating plate 22.

[0039] The positioning device is suitable for flanges, pipes, etc., and its inner wall must be a hollow cylindrical structure, while the outer wall may vary. The maximum length of the workpiece is the minimum distance between the rotating plate 22 and the arc plate 31 when the right vertical plate 2 is at the rightmost end (the moving end of cylinder B11 is fully extended). This minimum distance must be greater than the length of the arc plate 31. The minimum length of the workpiece is not less than the length of the arc plate 31, and both ends of the workpiece must be abutted during marking. The minimum diameter of the inner wall of the workpiece is not less than the minimum diameter formed by the arc plates 31 (the left and right side walls of the outer inclined block 33 and the inner inclined block 34 are aligned). The maximum diameter of the inner wall of the workpiece is not greater than the maximum diameter formed by the arc plates 31 (the inner inclined block 34 is at the leftmost end).

[0040] The long axis of the positioning groove 41 corresponds to the moving direction of the arc plate 31 on the same side.

[0041] The two rotating plates 22 are coaxially arranged.

[0042] Anti-slip strips (rubber material) are fixedly installed on the outer wall of the arc plate 31, the left wall of the rotating plate 22, and the right wall of the positioning ring 3. The anti-slip properties of the rubber facilitate the improvement of friction between the rubber and the workpiece.

[0043] The positioning ring 3 is fixed to the left rotating plate 22 by the connecting rod 27, and the cylinder seat 28 is fixedly installed between the two connecting rods 27. The cylinder A23 is fixedly installed on the cylinder seat 28.

[0044] Preferably, the portion of the guide plate 36 inserted into the guide groove 35 is in clearance fit with the guide groove 35.

[0045] Furthermore, reinforcing plates 24 are fixedly installed on both sides of the left upright plate 2, and the bottom wall of the reinforcing plates 24 is fixedly installed on the base plate 1; a motor base 25 is fixedly installed on the left wall of the left upright plate 2, and a motor 26 is fixedly installed on the motor base 25. The output shaft of the motor 26 extends to the right and connects to the left rotating shaft 21; wherein, according to the usage scenario and the required rotation speed, a suitable motor can be selected, and an existing drive motor can be used. This article only limits the installation position of the motor.

[0046] Furthermore, a horizontally arranged cylinder B11 is fixedly installed on the bottom wall of the base plate 1. The movable end of cylinder B11 extends to the right and is fixedly connected to the left wall of the right side upright plate 2. Preferably, the extension and retraction of the movable ends of cylinders A23 and B11 are controlled by a PLC and an electromagnetic reversing valve; preferably, cylinders A23 and B11 are cylinders with guide rods, and the operation of the cylinders adopts methods commonly used in the prior art.

[0047] Working principle:

[0048] In use, the workpiece to be laser-marked is placed outside the arc plate 31, with its left end face abutting against the right wall of the positioning ring 3. The arc plate 31 is moved outward until the outer wall of the arc plate 31 abuts against the inner wall of the workpiece. Then, by retracting the movable end of the cylinder B11, the right vertical plate 2 is moved to the left until the left wall of the right rotating plate 22 abuts against the right end face of the workpiece, thus completing the positioning of the workpiece.

[0049] The left rotating plate 22 is rotated by the motor 26 under the action of the rotating shaft 21, thereby driving the positioning ring 3 through the connecting rod 27 to rotate the workpiece in place (the right rotating plate 22 rotates accordingly), and the outer wall of the workpiece is marked by the existing laser marking machine.

[0050] The movement of the arc plate 31 is as follows: the moving end of the control cylinder A23 retracts inward, at which time the cylindrical rod 32 moves to the left (the movement range of the cylindrical rod 32 is from the right end of the positioning ring 3 to the right end of the cylinder seat 28, and the diameter of the through hole of the positioning ring 3 is larger than the diameter of the cylindrical rod 32), which drives multiple inner inclined blocks 34 to move to the left at the same time. Since the outer inclined block 33 is fixed on the arc plate 31 and cannot move laterally, the leftward movement of the inner inclined block 34 gradually pushes the outer inclined block 33 outward (the inclined surface of the outer inclined block 33 and the guide groove 35 always abuts), until the outer wall of the arc plate 31 abuts against the inner wall of the workpiece.

[0051] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A positioning device for laser marking, comprising a base plate (1), characterized in that, The base plate (1) is provided with two upright plates (2). The left upright plate (2) is fixedly installed on the base plate (1), and the right upright plate (2) is slidably connected to the base plate (1). The two upright plates (2) are provided with a rotating plate (22) rotatably connected on opposite sides. A positioning ring (3) is fixedly installed on the right wall of the rotating plate (22) on the left side. Three equidistant arc plates (31) are synchronously slidably connected on the positioning ring (3). A cylindrical rod (32) that moves laterally is provided inside the positioning ring (3). Multiple sets of moving components are provided between the arc plates (31) and the cylindrical rod (32).

2. The positioning device for laser marking according to claim 1, characterized in that, The moving component has an outer inclined block (33) and an inner inclined block (34) with parallel and opposite inclined surfaces, the inner inclined block (34) being slidably connected to the outer inclined block (33); The inner inclined block (34) is fixedly installed on the cylindrical rod (32), and the outer inclined block (33) is fixedly installed on the inner wall of the arc plate (31).

3. The positioning device for laser marking according to claim 2, characterized in that, The inner inclined block (34) has guide grooves (35) parallel to the inclined plane on both triangular planes. The outer inclined block (33) has two mirror-shaped guide plates (36) fixedly installed on the inclined plane. The end of the guide plate (36) parallel to the inclined plane is inserted into the guide groove (35) on the same side.

4. A positioning device for laser marking according to claim 1, characterized in that, The positioning ring (3) has three horizontally through positioning grooves (41), and each positioning groove (41) is slidably connected to a positioning rod (42). The positioning rod (42) is fixedly connected to the middle of the left wall of the arc plate (31).

5. A positioning device for laser marking according to claim 4, characterized in that, The left wall of the arc plate (31) abuts against the right wall of the positioning ring (3), and a positioning piece (43) is fixedly installed on the left end of the positioning rod (42), which abuts against the left wall of the positioning ring (3).

6. A positioning device for laser marking according to claim 1, characterized in that, Each of the upright plates (2) has through holes, and a rotating shaft (21) is rotatably connected to the through holes via bearings. The rotating shaft (21) is fixedly installed on the rotating plate (22) and is coaxial with the rotating plate (22).

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