Double-station automatic conveying and positioning mechanism for laser engraving

Abstract

The application discloses a double-station automatic conveying and positioning mechanism for laser engraving, which is characterized in that end positioning components and lateral positioning components in a station platform work cooperatively, especially through linkage design of head-to-tail positioning blocks and head-to-tail positioning rods in the lateral positioning components, single driving action is used to synchronously complete the downward pressing and fixing and lateral abutting positioning of a workpiece, multiple degrees of freedom are limited in one step, clamping and alignment time is greatly shortened, a rotating adjusting mechanism is cooperated with a double-station alternate layout and a variable-distance linear moving mechanism, the station platform is moved according to a program driving, and multiple surface laser engraving can be completed through one-time clamping of the workpiece, manual overturning and two-time clamping are avoided, the whole conveying, positioning and rotating process is automatically carried out, and efficiency fluctuation caused by manual operation is reduced.

Description

Technical Field

[0001] This invention relates to the field of laser processing equipment technology, and more particularly to a dual-station automatic conveying and positioning mechanism for laser engraving. Background Technology

[0002] Existing laser engraving equipment typically uses fixed slots or simple fixtures to position workpieces and achieves single-station loading via linear modules. However, traditional single-station laser engraving devices generally suffer from the following drawbacks: workpiece loading and laser engraving processes are separated, and loading and unloading rely on manual operation of the carrier, resulting in low positioning accuracy, slow production cycle, and difficulty in meeting the needs of mass automated production. Simultaneously, workpiece angle adjustment usually relies on manual flipping or external rotating fixtures, making automatic rotational positioning during laser engraving impossible. Consequently, multi-angle and multi-face laser engraving cannot be completed, severely limiting the equipment's processing range and flexibility.

[0003] Furthermore, another prominent problem with related technologies in this field is the lack of flexible adaptable structures. Existing devices are difficult to be compatible with workpieces of different specifications and clamping methods. When the product model is changed, it is often necessary to redesign or replace the fixtures, resulting in poor versatility and increased equipment adjustment time and operating costs.

[0004] Therefore, it is necessary to develop a dual-station automatic conveying and positioning mechanism for laser engraving to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a dual-station automatic conveying and positioning mechanism for laser engraving with high processing efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a dual-station automatic conveying and positioning mechanism for laser engraving, comprising: A linear transfer mechanism, a moving platform driven by the linear transfer mechanism, a pitch-changing mechanism mounted on the moving platform, a pair of rotary adjustment mechanisms driven by the pitch-changing mechanism and realizing relative or opposite movement, and a workstation platform pushed to rotate by the rotary adjustment mechanism. The workstation platform includes a support plate, an end positioning component and a lateral positioning component mounted on the support plate, and the support plate is provided with a work slot for placing workpieces; The end positioning assembly includes an end positioning reference component and an end positioning movable component. The end positioning reference component is fixed to one end of the bearing plate and located in the groove. The end positioning movable component is disposed at the other end of the groove and is used to cooperate with the end positioning reference component to clamp the workpiece along the length direction of the groove. The lateral positioning assembly includes a central section lateral positioning component and a head and tail section lateral positioning component. The end of the central section lateral positioning component has a pressing curved surface, which applies downward pressure to the workpiece when it enters the groove. The side surface of the bearing plate is provided with multiple fixing seats. Each fixing seat has a guide groove and a through hole. The guide groove is connected to the groove. The central section lateral positioning component and the first and last section lateral positioning components are respectively installed on the corresponding fixing seats. The central segment lateral positioning component also includes a central segment positioning drive component and a central segment positioning block. The central segment positioning drive component is installed on the lower surface of the bearing plate. One end of the central segment positioning block passes through the through hole and is connected to the central segment positioning drive component, and the other end extends along the guide groove. The pressing curved surface is formed at the end of the central segment positioning block. The central segment positioning drive component drives the central segment positioning block to enter or exit the slot along the guide groove. The first and last section lateral positioning components include a first and last section positioning block and a first and last section positioning rod that are linked together. The end of the first and last section positioning rod has an abutting surface. When it enters the work slot, it applies downward pressure to the workpiece and simultaneously drives the abutting surface to abut against the side of the workpiece. The contact surface is on the same horizontal line as the groove, and together with the side wall of the groove, it restricts the lateral movement of the workpiece. The first and last segment positioning rods are provided with connecting rods at their ends. The connecting rods are fixedly connected to the first and last segment positioning blocks to realize the linkage between the first and last segment positioning rods and the first and last segment positioning blocks.

[0007] Furthermore, the end positioning movable component includes an end positioning drive component and an end positioning block. The end positioning drive component is installed on the lower surface of the support plate. One end of the end positioning block is connected to the end positioning drive component, and the other end extends along the groove. The end positioning drive component pushes the end positioning block to move along the groove to approach or move away from the end positioning reference component.

[0008] Furthermore, the two ends of the groove penetrate the side surfaces of both ends of the support plate, and the side of the groove facing the lateral positioning component also penetrates the inner surface of the support plate.

[0009] Furthermore, the lateral positioning component for the first and last segments also includes a positioning drive component for the first and last segments. The positioning drive component for the first and last segments is installed on the lower surface of the bearing plate. The positioning block for the first and last segments is installed on the corresponding fixed base. One end of the block passes through the through hole and is connected to the positioning drive component for the first and last segments. The other end extends along the guide groove and is used to enter the working groove to apply downward pressure.

[0010] Furthermore, the rotation adjustment mechanism includes a rotation drive, a rotation shaft connected to the rotation drive, and a bracket sleeved on the rotation shaft. The end of the bracket is fixedly connected to the workstation platform, driving the workstation platform to rotate and position at any angle from 0° to 180°.

[0011] Compared with existing technologies, the advantages of this invention are as follows: This invention is a dual-station automatic conveying and positioning mechanism for laser engraving, which features high processing efficiency. Through the coordinated work of the end positioning component and the lateral positioning component in the station platform, especially by utilizing the linkage design of the first and last positioning blocks and the first and last positioning rods in the lateral positioning component, the downward pressing and fixing of the workpiece and the lateral contact positioning are completed simultaneously with a single drive action. Multiple degrees of freedom are restricted in one step, which greatly shortens the clamping and alignment time. The alternating layout of the dual stations and the variable pitch, linear transfer mechanism combined with the rotation adjustment mechanism drive the station platform to move according to the program, so that the workpiece can be laser engraved on multiple sides in one clamping, eliminating the need for manual flipping and secondary clamping. The entire conveying, positioning and rotation process is automated, reducing efficiency fluctuations caused by manual operation. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a three-dimensional structural diagram of a dual-station automatic conveying and positioning mechanism for laser engraving according to the present invention; Figure 2 for Figure 1 The diagram shows a variable-pitch mechanism for a dual-station automatic conveying and positioning mechanism used for laser engraving. Figure 3 for Figure 1 The diagram shows a rotary adjustment mechanism for a dual-station automatic conveying and positioning mechanism used for laser engraving. Figure 4 for Figure 1 The diagram shows a workstation platform for a dual-station automatic conveying and positioning mechanism used for laser engraving. Figure 5 for Figure 4 The figure shows a cross-sectional view of the workstation platform of the dual-station automatic conveying and positioning mechanism used for laser engraving. Figure 6 for Figure 4 The diagram shows a partial schematic of the workstation platform of the dual-station automatic conveying and positioning mechanism used for laser engraving.

[0014] In the diagram: 1. Linear transfer mechanism; 11. Servo motor; 12. Linear module; 13. Linear guide rail; 14. Cable chain; 2. Moving platform; 3. Pitch-changing mechanism; 31. Pitch-changing drive component; 32. Pitch-changing plate; 33. Track; 4. Rotation adjustment mechanism; 41. Rotation drive component; 42. Rotation shaft; 43. Bracket; 44. Support base; 5. Workstation platform; 51. Bearing plate; 511. Groove; 512. Fixed base; 513. Guide groove; 514. Through hole; 52. End positioning. Components; 521, End positioning reference component; 522, End positioning movable component; 5221, End positioning drive component; 5222, End positioning block; 53, Lateral positioning component; 531, Central segment lateral positioning component; 5311, Central segment positioning drive component; 5312, Central segment positioning block; 532, First and last segment lateral positioning components; 5321, First and last segment positioning drive component; 5322, First and last segment positioning block; 5323, First and last segment positioning rod; 5324, Connecting rod; 5325, Contact surface. Detailed Implementation

[0015] To further illustrate the technical means and effects adopted by the present invention to achieve its intended purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation, structure, features, and effects of the dual-station automatic conveying and positioning mechanism for laser engraving proposed according to the present invention. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0017] The following describes in detail, with reference to the accompanying drawings, the specific solution of the dual-station automatic conveying and positioning mechanism for laser engraving provided by the present invention.

[0018] Please refer to Figures 1 to 6 The present invention is a dual-station automatic conveying and positioning mechanism for laser engraving, which includes a linear transfer mechanism 1, a moving platform 2 driven by the linear transfer mechanism 1, a pitch-changing mechanism 3 installed on the moving platform 2, a rotation adjustment mechanism 4 driven by the pitch-changing mechanism 3, and a station platform 5 driven by the rotation adjustment mechanism 4.

[0019] The linear transfer mechanism 1 includes a servo motor 11, a linear module 12, and a linear guide rail 13. The servo motor 11 drives the linear module 12 to move the mobile platform 2 in a reciprocating linear motion along the linear guide rail 13. The linear transfer mechanism 1 also includes a cable chain 14, which is used to protect the internal cables and air pipes of the module and realize the horizontal transfer and conveying of the workpiece.

[0020] The mobile platform 2 is in a horizontal position and is used to support the pitch mechanism 3, the rotation adjustment mechanism 4, and the workstation platform 5.

[0021] The pitch-changing mechanism 3 includes a pair of pitch-changing drive members 31 fixed to the surface of the mobile platform 2, pitch-changing plates 32 respectively connected to the pitch-changing drive members 31, and rails 33 installed on both sides of the surface of the mobile platform 2. The pitch-changing drive members 31 are located between the pair of rails 33. The two ends of the pitch-changing plates 32 cooperate with the rails 33 through sliders. The pair of pitch-changing drive members 31 push the pitch-changing plates 32 to move relative to or opposite to each other along the rails 33.

[0022] The movement trajectory of the mobile platform 2 is perpendicular to the movement trajectory of the variable pitch plate 32.

[0023] The rotation adjustment mechanism 4 includes a rotation drive 41, a rotation shaft 42 connected to the rotation drive 41, and a bracket 43 sleeved on the rotation shaft 42. Specifically, a pair of support seats 44 are fixedly mounted on the surface of the pitch plate 32. The top of the pair of support seats 44 extends vertically upward and the end is equipped with a bearing. The rotation shaft 42 is installed in the bearing at the top of the support seat 44. The rotation drive 41 is fixed to one end of the pitch plate 32 and connected to the rotation shaft 42. One end of the bracket 43 is sleeved on the rotation shaft 42, and the other end extends radially outward and is fixedly connected to the workstation platform 5.

[0024] The rotary drive component 41 drives the bracket 43 and the workstation platform 5 to rotate via the rotary shaft 42.

[0025] The workstation platform 5 includes a support plate 51, end positioning components 52 installed at both ends of the support plate 51, and lateral positioning components 53 installed on the inner side of the support plate 51.

[0026] The support plate 51 has a groove 511 formed by recessing from its surface inward, and the shape of the groove 511 matches the shape of the workpiece. Specifically, the bracket 43 is fixedly connected to the support plate 51. Both ends of the groove 511 penetrate the side surfaces of both ends of the support plate 51, and the side facing the lateral positioning component 53 also penetrates the inner surface of the support plate 51.

[0027] The end positioning component 52 includes an end positioning reference component 521 and an end positioning movable component 522.

[0028] An end positioning reference member 521 is fixed to one end of a support plate 51 and located within a groove 511. An end positioning movable member 522 includes an end positioning drive member 5221 and an end positioning block 5222 connected to the end positioning drive member 5221. The end positioning drive member 5221 is mounted on the lower surface of the support plate 51. One end of the end positioning block 5222 is connected to the end positioning drive member 5221, and the other end extends along the groove 511. The end positioning drive member 5221 pushes the end positioning block 5222 to move along the groove 511, moving it closer to or further away from the end positioning reference member 521.

[0029] The end positioning reference 521 and the end positioning movable part 522 restrict the end movement of the workpiece.

[0030] The lateral positioning component 53 includes a central lateral positioning member 531 and a front and rear lateral positioning member 532.

[0031] The center segment lateral positioning component 531 includes a center segment positioning drive component 5311 and a center segment positioning block 5312 connected to the center segment positioning drive component 5311.

[0032] Specifically, the side surface of the support plate 51 has multiple fixing seats 512, each fixing seat 512 supporting a central section lateral positioning member 531 or a head and tail section lateral positioning member 532. The fixing seat 512 has a guide groove 513 formed by recessing from the surface inward, and a through hole 514 penetrating the bottom surface of the guide groove 513 and the lower surface of the fixing seat 512. The guide groove 513 penetrates the side surface of the fixing seat 512 and communicates with the groove 511.

[0033] The center segment positioning drive 5311 is installed on the lower surface of the support plate 51. One end of the center segment positioning block 5312 passes through the through hole 514 and is connected to the center segment positioning drive 5311. The other end extends along the guide groove 513. The center segment positioning drive 5311 pushes the center segment positioning block 5312 to move along the guide groove 513 and enter or exit the slot 511.

[0034] The lateral positioning component 532 for the first and last sections includes a positioning drive component 5321 for the first and last sections, a positioning block 5322 for the first and last sections connected to the positioning drive component 5321 for the first and last sections, and a positioning rod 5323 for the first and last sections.

[0035] The first and last segment positioning drive 5321 is installed at both ends of the lower surface of the support plate 51, and the first and last segment positioning block 5322 is installed on the fixed base 512. One end of the block is connected to the first and last segment positioning drive 5321 through the through hole 514, and the other end extends along the guide groove 513. The first and last segment positioning drive 5321 pushes the first and last segment positioning block 5322 to move along the guide groove 513 and enter or exit the slot 511.

[0036] One end of the first and last segment positioning rod 5323 is fixed with a connecting rod 5324, and the other end forms a contact surface 5325. The connecting rod 5324 is fixedly connected to the first and last segment positioning block 5322, and the contact surface 5325 is on the same horizontal line as the groove 511. The first and last segment positioning rod 5323 moves synchronously with the first and last segment positioning block 5322 through the connecting rod 5324, so that the contact surface 5325 moves closer to or further away from the groove 511.

[0037] Specifically, the ends of the center segment positioning block 5312 and the first and last segment positioning blocks 5322 are curved surfaces that bend from the bottom to the top. When the center segment positioning block 5312 and the first and last segment positioning blocks 5322 enter the work groove 511, they will press against the upper surface of the workpiece located in the work groove 511, restricting the vertical movement of the workpiece.

[0038] When the first and last positioning rods 5323 move toward the groove 511, they will work together with the side wall of the groove 511 to restrict the lateral movement of the workpiece.

[0039] In this invention, a dual-station automatic conveying and positioning mechanism for laser engraving is used. The operator or an automatic feeding robot places the workpiece into the slot 511 on the support plate 51 of the workstation platform 5. The shape of the slot 511 matches the workpiece, achieving initial positioning.

[0040] The end positioning drive 5221 pushes the end positioning block 5222 along the groove 511 toward the end positioning reference 521, clamping the workpiece between the end positioning components 52 and restricting its movement along the length of the groove 511. The center segment positioning drive 5311 pushes the center segment positioning block 5312 into the groove 511 along the guide groove 513. Its curved end presses against the upper surface of the workpiece, restricting its vertical movement. The beginning and end segment positioning drive 5321 pushes the beginning and end segment positioning blocks 5322 into the groove 511 along the guide groove 513, similarly pressing against the upper surface of the workpiece and restricting its vertical movement. Simultaneously, the beginning and end segment positioning rods 5323 move synchronously toward the groove 511 along with the beginning and end segment positioning blocks 5322, and their contact surfaces 5325 work together with the sidewalls of the groove 511 to laterally restrict the workpiece, completing lateral positioning. At this point, the workpiece is fully constrained in all six degrees of freedom (up / down, left / right, front / back) and is in a precise machining position.

[0041] Servo motor 11 drives linear module 12, causing the entire moving platform 2 to perform precise reciprocating linear motion along linear guide rail 13, transporting workstation platform 5 from loading / unloading position to processing position below laser engraving head. Rotary drive component 41 drives bracket 43 and workstation platform 5 fixed thereto to rotate to the required angle via rotating shaft 42 (allowing workpiece to be rotated and positioned at any angle from 0-180°), so that the workpiece surface to be processed faces the laser head.

[0042] Simultaneously, depending on the working position of the laser engraving head or the need for alternating operation between two workstations, a pair of variable-pitch drive components 31 respectively push their respective variable-pitch plates 32, moving in a straight line relative to or opposite to each other along the track 33. At this time, the lateral distance between the two workstation platforms 5 is precisely adjusted to adapt to the laser processing station position or avoid interference.

[0043] The laser head emits light to mark, engrave, and perform other processing on the workpiece surface. During this process, the equipment can, according to program requirements, combine the continuous movement of the linear transfer mechanism 1, the continuous rotation of the rotary adjustment mechanism 4, and the continuous pitch change of the pitch mechanism 3 to achieve rotary engraving of complex trajectories. After processing is completed, each component is reset sequentially.

[0044] This invention relates to a dual-station automatic conveying and positioning mechanism for laser engraving, characterized by high processing efficiency. Through the coordinated operation of end positioning components and lateral positioning components within the workstation platform, particularly utilizing the linkage design of the first and last positioning blocks and rods within the lateral positioning components, a single drive action synchronously completes the downward pressing and fixing of the workpiece and lateral contact positioning. This restricts multiple degrees of freedom in one step, significantly shortening the clamping and alignment time. Furthermore, the alternating dual-station layout, along with the variable-pitch, linear transfer mechanism and the rotation adjustment mechanism, drives the workstation platform to move according to a program, allowing multi-sided laser engraving to be completed in a single clamping operation, eliminating the need for manual flipping and secondary clamping. The entire conveying, positioning, and rotation process is automated, reducing efficiency fluctuations caused by manual operation.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dual-station automatic conveying and positioning mechanism for laser engraving, characterized in that, include: Linear transfer mechanism (1), a moving platform (2) driven by the linear transfer mechanism (1), a pitch-changing mechanism (3) mounted on the moving platform (2), a pair of rotary adjustment mechanisms (4) driven by the pitch-changing mechanism (3) and realizing relative or opposite movement, and a workstation platform (5) pushed to rotate by the rotary adjustment mechanism (4). The workstation platform (5) includes a support plate (51), an end positioning component (52) and a lateral positioning component (53) mounted on the support plate (51). The support plate (51) is provided with a work slot (511) for placing workpieces. The end positioning assembly (52) includes an end positioning reference part (521) and an end positioning movable part (522). The end positioning reference part (521) is fixed to one end of the bearing plate (51) and located in the groove (511). The end positioning movable part (522) is disposed at the other end of the groove (511) and is used to cooperate with the end positioning reference part (521) to clamp the workpiece along the length direction of the groove (511). The lateral positioning assembly (53) includes a central section lateral positioning member (531) and a head and tail section lateral positioning member (532). The end of the central section lateral positioning member (531) has a pressing curved surface, which applies downward pressure to the workpiece when it enters the groove (511). The side surface of the bearing plate (51) is provided with a plurality of fixing seats (512), each fixing seat (512) is provided with a guide groove (513) and a through hole (514), the guide groove (513) is connected to the groove (511), and the center section lateral positioning component (531) and the head and tail section lateral positioning component (532) are respectively installed on the corresponding fixing seat (512); The central segment lateral positioning component (531) further includes a central segment positioning drive component (5311) and a central segment positioning block (5312). The central segment positioning drive component (5311) is installed on the lower surface of the support plate (51). One end of the central segment positioning block (5312) passes through the through hole (514) and is connected to the central segment positioning drive component (5311). The other end extends along the guide groove (513). The pressing curved surface is formed at the end of the central segment positioning block (5312). The central segment positioning drive component (5311) drives the central segment positioning block (5312) to enter or exit the slot (511) along the guide groove (513). The first and last section lateral positioning component (532) includes a first and last section positioning block (5322) and a first and last section positioning rod (5323) that are linked together. The end of the first and last section positioning rod (5323) has an abutting surface (5325). When it enters the work groove (511), it applies downward pressure to the workpiece and at the same time drives the abutting surface (5325) to abut against the side of the workpiece. The contact surface (5325) is on the same horizontal line as the groove (511), and together with the side wall of the groove (511), it restricts the lateral movement of the workpiece. The end of the first and last segment positioning rod (5323) is provided with a connecting rod (5324), and the connecting rod (5324) is fixedly connected to the first and last segment positioning block (5322) to realize the linkage between the first and last segment positioning rod (5323) and the first and last segment positioning block (5322).

2. The dual-station automatic conveying and positioning mechanism for laser engraving according to claim 1, characterized in that: The end positioning movable component (522) includes an end positioning drive component (5221) and an end positioning block (5222). The end positioning drive component (5221) is mounted on the lower surface of the support plate (51). One end of the end positioning block (5222) is connected to the end positioning drive component (5221), and the other end extends along the groove (511). The end positioning drive component (5221) pushes the end positioning block (5222) to move along the groove (511) to approach or move away from the end positioning reference component (521).

3. The dual-station automatic conveying and positioning mechanism for laser engraving according to claim 1, characterized in that: The two ends of the groove (511) penetrate the side surfaces of both ends of the support plate (51), and the side of the groove (511) facing the lateral positioning component (53) also penetrates the inner surface of the support plate (51).

4. The dual-station automatic conveying and positioning mechanism for laser engraving according to claim 1, characterized in that: The lateral positioning component (532) of the first and last segments also includes a positioning drive component (5321) of the first and last segments. The positioning drive component (5321) of the first and last segments is installed on the lower surface of the support plate (51). The positioning block (5322) of the first and last segments is installed on the corresponding fixed seat (512). One end of the block passes through the through hole (514) and is connected to the positioning drive component (5321) of the first and last segments. The other end extends along the guide groove (513) and is used to enter the working groove (511) to apply downward pressure.

5. The dual-station automatic conveying and positioning mechanism for laser engraving according to claim 1, characterized in that: The rotation adjustment mechanism (4) includes a rotation drive (41), a rotation shaft (42) connected to the rotation drive (41), and a bracket (43) sleeved on the rotation shaft (42). The end of the bracket (43) is fixedly connected to the workstation platform (5) to drive the workstation platform (5) to rotate and position at any angle from 0° to 180°.

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