Four-station rotating mechanism applied to automatic laser

Abstract

The utility model relates to the technical field of key laser etching, in particular to a four-station rotating mechanism applied to automatic laser. Comprising a workbench. According to the utility model, when the rotating disc drives the tray on which the coating jig is placed to rotate to the position corresponding to the laser station, the ejection mechanism corresponding to the laser station ejects the tray upwards, so that the limiting plate presses a plurality of key products downwards, and the inclined key products floating on the coating jig are centralized through the limiting plate; then the two pressing blocks are driven by a first telescopic air cylinder and a second telescopic air cylinder correspondingly to horizontally push the tray, so that the four side faces of the tray make contact with the two pressing blocks and the L-shaped plates correspondingly, and the positions of the coating jig and the key product on the tray are kept stable and consistent; it is guaranteed that laser emitted by the laser marking machine can penetrate through the corresponding hollowed-out grooves to irradiate the key products, laser etching of characters and patterns is carried out on the preset positions of the multiple key products, and the laser etching precision of the characters and patterns on the key products is improved.

Description

Technical Field

[0001] This utility model relates to the field of button laser engraving technology, specifically to an automatic laser four-station rotating mechanism. Background Technology

[0002] A button product requires laser engraving of text and patterns on its surface using an automatic laser machine during the production process. The automatic laser machine is equipped with a pick-and-place station, a pressing station, a laser station, and an inspection station. A lifting mechanism is installed below the pick-and-place station, the pressing station, and the laser station. The button product moves between the four stations in the automatic laser machine via a rotating disc.

[0003] The specific procedures are as follows: First, an external robotic arm places a coating fixture 23 containing buttons that have not been laser-engraved onto a tray at the pick-and-place station. Then, a rotary servo motor rotates the rotary table 90 degrees on its central axis, rotating the aluminum tray containing the coating fixture 23 to the pressing station. The automatic pressing device at the pressing station is activated, and simultaneously, a lifting mechanism vertically lifts the tray. The automatic pressing device then flattens the fixture, ensuring a stable and consistent fit of all subsequent button coating fixtures on the aluminum tray after passing through the pressing station. Furthermore, the lifting mechanism is equipped with several top columns, and positioning holes are opened on the tray corresponding to each top column. When the lifting mechanism lifts the tray, the top column is inserted into the corresponding positioning hole. The top column and the positioning hole cooperate to prevent the tray from moving horizontally during the lifting process, thus preventing the tray from slipping off the lifting mechanism. Then, the rotary table rotates the coating fixture that has been pressed to the laser station in sequence. The bottom lifting mechanism lifts the aluminum tray in the same way, and then the laser machine on the laser station begins to laser text patterns on the button surface.

[0004] After several button products are loaded onto the coating fixture 23 by the external robotic arm, the button products tend to float and tilt on the coating fixture 23. It is difficult for several button products to maintain a consistent flatness on the coating fixture 23. At the same time, in order to allow the top post and the positioning hole to be inserted and disengaged smoothly, there is a certain gap between the top post and the positioning hole. That is, after the lifting mechanism lifts the tray, the tray, the coating fixture and the button products can undergo slight horizontal displacement on the lifting mechanism. If the position of the tray cannot be completely fixed, the laser machine cannot laser engrave the text and patterns on the button products at the predetermined positions, which increases the defect rate of the button products. Utility Model Content

[0005] The purpose of this invention is to provide a solution for an automatic laser four-station rotary mechanism, thereby addressing the problems mentioned in the background section.

[0006] It is difficult to maintain a consistent flatness on the coating fixture for several button products, and the tray, coating fixture and button products can undergo slight horizontal displacement, which makes it impossible for the laser machine to laser engrave text and patterns at the predetermined position on each button product.

[0007] To achieve the above objectives, this utility model aims to provide an automatic laser four-station rotary mechanism, including a worktable. A servo motor is fixedly mounted on the middle position of the side wall of the worktable via a bracket. A rotating disk is coaxially fixed to the upper end of the output shaft of the servo motor via a spline. The mechanism is characterized in that four stations are arranged in a ring around the upper edge of the rotating disk, namely a pick-and-place station, a pressing station, a laser station, and an inspection station. A stepped groove is provided on the rotating disk corresponding to each station, and a tray is installed inside the stepped groove. The positions on the worktable corresponding to the pick-and-place station, the pressing station, and the laser station are... Each device is equipped with an ejection mechanism, which is used to vertically lift the corresponding tray. Above the rotary table is a limiting plate corresponding to the laser station. The limiting plate is fixedly installed on the worktable by a bracket. A correction mechanism is provided on the lower side of the limiting plate. When the rotary table drives the tray containing the coating fixture to rotate to the position corresponding to the laser station, the ejection mechanism corresponding to the laser station lifts the tray upward. When the tray drives the button on the coating fixture to contact the lower side wall of the limiting plate, the correction mechanism corrects and positions the tray to ensure that the laser marking machine can laser engrave text and patterns at the predetermined position on each button product.

[0008] As a further improvement to this technical solution, the correction mechanism includes an L-shaped plate fixedly installed at the lower side wall edge of the limiting plate. A first telescopic cylinder and a second telescopic cylinder are fixedly installed on the lower side wall of the limiting plate. A pressure block is fixedly installed at one end of the piston rod of the first telescopic cylinder and the second telescopic cylinder. The piston rods of the first telescopic cylinder and the second telescopic cylinder drive the two pressure blocks to move horizontally.

[0009] As a further improvement to this technical solution, the L-shaped plate and the two pressure blocks enclose a rectangular area. When the ejection mechanism corresponding to the laser station lifts the tray upward, the tray is lifted into the interior of the rectangular area, and the horizontal movement of the tray is restricted by the cooperation of the two pressure blocks and the L-shaped plate.

[0010] As a further improvement to this technical solution, the ejection mechanism includes an ejection cylinder fixedly installed on the side wall of the workbench. A top plate is fixedly installed on the upper end of the piston rod of the ejection cylinder. When the piston rod of the ejection cylinder drives the top plate to move upward, the top plate passes through the corresponding stepped groove and contacts the lower side wall of the tray. The top column and the positioning hole cooperate to prevent the tray from moving horizontally during vertical movement, thereby improving the stability of the tray during movement.

[0011] As a further improvement to this technical solution, the ejection mechanism also includes several vertically fixed top columns on the side wall of the top plate. A positioning hole is provided on the tray for each top column. When the upper side wall of the top plate contacts the lower side wall of the tray, the top column is inserted into the corresponding positioning hole, and a gap is left between the circumferential side wall of the top column and the inner wall of the corresponding positioning hole, so that the top column can be smoothly inserted into and detached from the positioning hole.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This is applied to an automatic laser four-station rotating mechanism. When the rotary table drives the tray containing the coating fixture to rotate to the position corresponding to the laser station, the ejection mechanism corresponding to the laser station lifts the tray upwards, causing the limiting plate to press down several button products. The limiting plate straightens the tilted button products floating on the coating fixture. Then, the first and second telescopic cylinders drive two pressure blocks to push the tray horizontally, so that the four sides of the tray contact the two pressure blocks and the L-shaped plate respectively. This keeps the position of the coating fixture and the button products on the tray stable and consistent, ensuring that the laser emitted by the laser marking machine can pass through the corresponding hollow grooves and irradiate the button products, laser engraving text and patterns at predetermined positions on several button products, thus improving the laser engraving accuracy of the text and patterns on the button products. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is one of the partial structural schematic diagrams of this utility model;

[0016] Figure 3 This is the second partial structural schematic diagram of the present utility model;

[0017] Figure 4 This is the third partial structural schematic diagram of this utility model;

[0018] Figure 5 This is an exploded view of part of the structure of this utility model;

[0019] Figure 6 This is a schematic diagram of the limiting plate and the correction mechanism of this utility model.

[0020] The meanings of the labels in the diagram are as follows:

[0021] 1. Workbench;

[0022] 2. Spinning plate; 21. Stepped groove; 22. Tray; 221. Positioning hole; 23. Painting fixture;

[0023] 3. Press cylinder; 31. Pressure plate;

[0024] 4. Laser marking machine;

[0025] 5. Camera;

[0026] 6. Ejection mechanism; 61. Ejection cylinder; 62. Top plate; 63. Ejection column;

[0027] 7. Limit plate;

[0028] 8. Correction mechanism; 81. L-shaped plate; 82. First telescopic cylinder; 83. Second telescopic cylinder. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1

[0031] Please see Figure 1 and Figure 2 As shown, one of the objectives of this embodiment is to provide an automatic laser four-station rotary mechanism, including a worktable 1. A servo motor is fixedly installed in the middle of the upper side wall of the worktable 1 via a bracket. A rotary disk 2 is coaxially fixed to the upper end of the output shaft of the servo motor via a spline. The rotary disk 2 is horizontally set. The servo motor is electrically connected to an external control device. The control device controls the output shaft of the servo motor to drive the rotary disk 2 to rotate intermittently by 90 degrees. Four stations are arranged in a ring at the upper edge of the rotary disk 2, namely, a pick-and-place station, a pressing station, a laser station, and an inspection station. A protective cover is fixedly installed on the upper side wall of the worktable 1. The rotary disk 2 and the four stations are all located inside the protective cover, which protects the rotary disk 2 and the four stations.

[0032] Reference Figure 3 Each station on the rotary table 2 is provided with a stepped groove 21, and a tray 22 is provided inside the stepped groove 21. At the same time, each station on the worktable 1 is provided with an ejector mechanism 6, which is used to vertically lift the corresponding tray 22. When the ejector mechanism 6 does not lift the tray 22, the side wall of the tray 22 contacts the inner wall of the corresponding stepped groove 21, so that the tray 22 can be stably placed on the rotary table 2.

[0033] The structure of the ejection mechanism 6 is detailed below, referring to... Figure 5The ejection mechanism 6 includes an ejection cylinder 61 fixedly installed on the upper side wall of the worktable 1. A top plate 62 is fixedly installed on the upper end of the piston rod of the ejection cylinder 61. When the piston rod of the ejection cylinder 61 drives the top plate 62 to move upward, the top plate 62 passes through the corresponding stepped groove 21 and contacts the lower side wall of the tray 22. The upward-moving top plate 62 lifts the tray 22 upward, causing the tray 22 to move out of the interior of the stepped groove 21 and move to the top of the rotary table 2. The ejection mechanism 6 also includes several top posts 63 vertically fixed to the upper side wall of the top plate 62. For each top post 63 on the tray 22 Positioning holes 221 are provided at corresponding positions. When the upper side wall of the top plate 62 contacts the lower side wall of the tray 22, the top post 63 is inserted into the corresponding positioning hole 221. The top post 63 and the positioning hole 221 cooperate to prevent the tray 22 from moving horizontally during vertical movement, thereby improving the stability of the tray 22 during movement. In addition, there is a gap between the circumferential side wall of the top post 63 and the inner wall of the corresponding positioning hole 221. The gap ranges from 0.01mm to 0.05mm, allowing the top post 63 to be smoothly inserted into and removed from the positioning hole 221.

[0034] Meanwhile, an embedded groove is provided in the middle of the upper side wall of the tray 22, and a protrusion adapted to the embedded groove is fixedly provided on the lower side wall of the coating fixture 23. When the external robot places the coating fixture 23 loaded with several button products on the tray 22 at the pick-and-place station, the protrusion on the coating fixture 23 is pre-inserted into the inside of the embedded groove. The servo motor drives the rotary table 2 to rotate 90 degrees, so that the rotary table 2 can drive the coating fixture 23 to rotate to the position corresponding to the pressing station. The pressing station includes a pressing cylinder 3 fixedly installed on the upper side wall of the worktable 1 by a bracket. A pressure plate 31 is fixedly provided at the lower end of the piston rod of the pressing cylinder 3. Several pressure rods are fixedly provided on the lower side wall of the pressure plate 31, and the pressure rods are all located above the rotary table 2.

[0035] When the coating fixture 23 rotates to the position corresponding to the pressing station, the pressure plate 31 is located directly above the coating fixture 23. At this time, the piston rod of the ejector cylinder 61 corresponding to the pressing station extends and drives the top plate 62 to move upward, so that the top plate 62 passes through the stepped groove 21 and vertically lifts the tray 22 and the coating fixture 23. At the same time, the piston rod of the pressing cylinder 3 extends and drives the pressure plate 31 and several pressing rods to move downward, so that the tray 22 and the pressure plate 31 move closer to each other. After the lower end of the pressing rod contacts the edge of the coating fixture 23, the downward-moving pressing rod presses the coating fixture 23 downward, so that the protrusion on the coating fixture 23 is embedded in the inner groove on the tray 22, so that the coating fixture 23 after passing through the pressing station is stably and consistently fitted on the tray 22.

[0036] After the pressure rod presses and fits the coating fixture 23 onto the tray 22, the piston rod of the pressing cylinder 3 retracts, causing the pressure plate 31 and the pressure rod to reset. The piston rod of the ejector cylinder 61 retracts, causing the top column 63 to move below the rotary table 2, so that the tray 22 returns to the interior of the stepped groove 21 under the action of gravity. Then, the rotary table 2 drives the coating fixture 23 to rotate 90 degrees in its original direction, rotating the coating fixture 23 to the laser station. The laser station includes a laser marking machine 4 fixedly installed on the side wall of the worktable 1 by a bracket. The laser marking machine 4 is located above the rotary table 2. After the coating fixture 23 is rotated to the laser station, the coating fixture 23 is located directly below the laser marking machine 4.

[0037] Furthermore, a limiting plate 7 corresponding to the laser station is set above the rotary table 2. The limiting plate 7 is fixedly installed on the worktable 1 by a bracket. A correction mechanism 8 is set on the lower side of the limiting plate 7. When the rotary table 2 drives the tray 22, which holds the coating fixture 23, to rotate to the position corresponding to the laser station, the limiting plate 7 is located directly above the coating fixture 23. The ejection mechanism 6 corresponding to the laser station pushes the tray 22 upward. The tray 22 causes the button products on the coating fixture 23 to contact the lower side wall of the limiting plate 7. Then, the limiting plate 7 presses several button products downward, and the limiting plate 7 corrects the upward tilt of the coating fixture 23. The angled button products ensure that they remain flat on the coating fixture 23. Then, the correction mechanism 8 corrects and positions the tray 22, ensuring that the coating fixture 23 and the button products on the tray 22 are in a stable and consistent position. Hollow grooves are provided on the limiting plate 7 at positions corresponding to several button products. After the button products are stabilized at the predetermined positions below the limiting plate 7 under the correction mechanism 8, the laser marking machine 4 emits lasers sequentially towards several button products on the coating fixture 23, so that the laser passes through the corresponding hollow grooves and irradiates the button products, laser engraving text and patterns at predetermined positions on several button products.

[0038] The structure of the correction mechanism 8 is described in detail below, with reference to... Figure 6The correction mechanism 8 includes an L-shaped plate 81 fixedly installed at the lower side wall edge of the limiting plate 7. A first telescopic cylinder 82 and a second telescopic cylinder 83 are fixedly installed on the lower side wall of the limiting plate 7. A pressure block is fixedly installed at one end of the piston rod of the first telescopic cylinder 82 and the second telescopic cylinder 83. The L-shaped plate 81 and the two pressure blocks enclose a rectangular area. When the ejection mechanism 6 corresponding to the laser station lifts the tray 22 upward, the tray 22 is lifted into the interior of the rectangular area. Then, the piston rods of the first telescopic cylinder 82 and the second telescopic cylinder 83 extend simultaneously, causing the two pressure blocks to approach the tray 22. After the pressure blocks contact the tray 22, they push the tray 22 closer to the L-shaped plate 81. The button products on the coating fixture 23 slide relative to the limiting plate 7 until the four sides of the tray 22 contact the two pressure blocks and the L-shaped plate 81 respectively, fixing the tray 22 in a predetermined position below the limiting plate 7, thereby correcting and straightening several button products on the coating fixture 23.

[0039] After the laser marking machine 4 laser-engraves text and patterns on the button products, the piston rod of the ejector cylinder 61 corresponding to the laser station retracts to its original position, causing the tray 22 to return to the inside of the stepped groove 21 under the action of gravity. Then, the rotary table 2 drives the coating fixture 23 to rotate 90 degrees in its original direction, rotating the coating fixture 23 to the inspection station. The inspection station includes a camera 5 fixedly mounted on the side wall of the workbench 1 by a bracket. After the rotary table 2 drives the tray 22 and the coating fixture 23 to the inspection station, the camera 5 shoots towards the coating fixture 23. The camera 5 takes pictures of the button products on the coating fixture 23 and transmits them to an external computer device, which then inspects the laser engraving quality of the button products.

[0040] Then, the rotary table 2 drives the tray 22 to rotate 90 degrees in its original direction, so that the tray 22, the coating fixture 23 and the button product are rotated to the pick-up and drop station. The laser-engraved button product and the coating fixture 23 are removed from the tray 22 by the external robotic arm, thus completing the laser engraving process of the button product.

[0041] When using this device, the robotic arm places the coating fixture 23 on the tray 22 of the pick-and-place station. After the rotary table 2 drives the coating fixture 23 to rotate to the pressing station, the robotic arm can place the next coating fixture 23 on the tray 22 of the pick-and-place station, so that all four stations are in working condition, improving the laser engraving efficiency of this rotating mechanism on button products. The movements of the servo motor, pressing cylinder 3, laser marking machine 4, camera 5, ejection cylinder 61 and external robotic arm in this rotating mechanism are all controlled by external control equipment. After the coating fixture 23 reaches the predetermined position, the control equipment can promptly control the servo motor, pressing cylinder 3, laser marking machine 4, camera 5, ejection cylinder 61 and external robotic arm to perform corresponding actions, ensuring the normal laser engraving processing of button products by this rotating mechanism.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A rotary mechanism for an automatic laser four-position system, comprising a worktable (1), wherein a servo motor is fixedly mounted on the middle position of the upper side wall of the worktable (1) via a bracket, and a rotating disk (2) is coaxially fixed to the upper end of the output shaft of the servo motor via a spline, characterized in that: Four workstations are arranged in a ring around the upper edge of the rotary table (2), namely, a pick-and-place workstation, a pressing workstation, a laser workstation, and an inspection workstation. A stepped groove (21) is provided on the rotary table (2) at the position corresponding to each workstation. A tray (22) is installed inside the stepped groove (21). An ejector mechanism (6) is provided on the worktable (1) at the positions corresponding to the pick-and-place workstation, the pressing workstation, and the laser workstation. The ejector mechanism (6) is used to vertically lift the corresponding tray (22). A mechanism is also provided above the rotary table (2) corresponding to the laser workstation. The corresponding limiting plate (7) is fixedly installed on the workbench (1) by a bracket. A correction mechanism (8) is provided on the lower side of the limiting plate (7). When the rotary table (2) drives the tray (22) on which the coating fixture (23) is placed to rotate to the position corresponding to the laser station, the ejection mechanism (6) corresponding to the laser station pushes the tray (22) upward. When the tray (22) drives the button on the coating fixture (23) to contact the lower side wall of the limiting plate (7), the correction mechanism (8) corrects and positions the tray (22).

2. The automatic laser four-station rotary mechanism according to claim 1, characterized in that: The correction mechanism (8) includes an L-shaped plate (81) fixedly installed at the edge of the lower side wall of the limiting plate (7). A first telescopic cylinder (82) and a second telescopic cylinder (83) are fixedly installed on the lower side wall of the limiting plate (7). A pressure block is fixedly installed at one end of the piston rod of the first telescopic cylinder (82) and the second telescopic cylinder (83).

3. The automatic laser four-station rotary mechanism according to claim 2, characterized in that: The L-shaped plate (81) and the two pressure blocks enclose a rectangular area. When the ejection mechanism (6) corresponding to the laser station lifts the tray (22) upward, the tray (22) is lifted into the interior of the rectangular area.

4. The automatic laser four-station rotary mechanism according to claim 1, characterized in that: The ejection mechanism (6) includes an ejection cylinder (61) fixedly installed on the upper side wall of the workbench (1). A top plate (62) is fixedly installed on the upper end of the piston rod of the ejection cylinder (61). When the piston rod of the ejection cylinder (61) drives the top plate (62) to move upward, the top plate (62) passes through the corresponding stepped groove (21) and contacts the lower side wall of the tray (22).

5. The automatic laser four-station rotary mechanism according to claim 4, characterized in that: The ejection mechanism (6) also includes several vertically fixed top columns (63) on the upper side wall of the top plate (62). The tray (22) has a positioning hole (221) for each top column (63). When the upper side wall of the top plate (62) contacts the lower side wall of the tray (22), the top column (63) is inserted into the corresponding positioning hole (221), and there is a gap between the circumferential side wall of the top column (63) and the inner wall of the corresponding positioning hole (221).

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