An anti-counterfeiting invisible laser engraving device for injection molds

Abstract

This utility model discloses an anti-counterfeiting and invisible laser engraving device for injection molds, belonging to the field of laser processing technology. It aims to solve the problems of existing laser engraving devices being unable to engrave large-angle curved surfaces or 90-degree chamfered areas of molds, and lacking integrated positioning and angle adjustment functions. The device includes a frame, a positioning plate, an adjusting component, a horizontal moving mechanism, a vertical moving mechanism, and a laser assembly. The positioning plate is fixed within the frame and has positioning holes. The adjusting component includes a shell, a limiting plate, a sub-plate, a threaded rod, a guide frame, and other components. The positioning rod at the bottom of the shell cooperates with the positioning holes to achieve installation and positioning. The threaded rod can drive the limiting plate to achieve vertical lifting or horizontal movement. The adjusting component can achieve stable positioning of the mold and flexibly adjust the mold angle. Combined with the horizontal and vertical moving mechanisms, it drives the laser assembly to move precisely, making it suitable for engraving operations on flat surfaces, large-angle curved surfaces, and 90-degree chamfered areas.

Description

Technical Field

[0001] This utility model relates to the field of laser processing technology, and in particular to an anti-counterfeiting and invisible laser engraving device for injection molds. Background Technology

[0002] Injection molds are components used in the mass production of plastic products in the manufacturing industry. With the increasing market demand for product anti-counterfeiting, the method of engraving invisible laser markings on the inner wall of the mold cavity to carry hidden anti-counterfeiting information on the molded products has been widely used. These invisible laser markings are difficult to imitate and have strong recognition, and are widely used in home appliances, auto parts, daily necessities and other fields.

[0003] Laser engraving is a non-contact processing method that only needs to form visible or invisible patterns, text, and markings on the surface of the workpiece. Therefore, many laser engraving machines only have simple positioning structures and are not equipped with dedicated clamping and limiting mechanisms. In actual use, some users need to engrave markings on the curved surfaces of the mold. Although laser engraving can process ordinary curved surfaces, it is more difficult to process large-angle curved surfaces or 90-degree chamfered areas. Often, it is necessary to raise the mold and tilt it before attempting to process. This operation method is cumbersome and can easily cause the mold positioning to shift, affecting the engraving accuracy. Currently, there is a lack of related devices that can simultaneously achieve mold positioning and angle adjustment. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies that make it difficult to engrave large-angle curved surfaces or 90-degree chamfered areas of molds, and to propose an anti-counterfeiting invisible laser engraving device for injection molds.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A counterfeit-proof invisible laser engraving device for injection molds includes a frame and a positioning plate fixedly installed in the frame, wherein the positioning plate has positioning holes. An adjusting component includes a housing, a limiting plate, a secondary plate, a mounting base, a rotating shaft, a connecting seat, a threaded rod, and a guide frame. A positioning rod that mates with a positioning hole is fixed to the bottom of the housing. The limiting plate is L-shaped, with its vertical section integrally formed with the secondary plate. The secondary plate is located inside the housing. An L-shaped guide groove is formed on the inner wall of the housing. The secondary plate has a guide protrusion that mates with the L-shaped guide groove. The mounting base is fixed to the top of the secondary plate. The rotating shaft is fixed to the mounting base. The connecting seat is rotatably sleeved on the rotating shaft. One end of the threaded rod is rotatably connected to the connecting seat. An arc-shaped guide groove is formed on the inner wall of the housing. The guide frame mates with the arc-shaped guide groove and allows the threaded rod to pass through.

[0006] In one possible design, the outer wall of the housing has a through hole for the threaded rod to move, and the end of the threaded rod away from the connecting seat extends through the through hole to the outside of the housing, and this end is fixed with a screwing end.

[0007] In one possible design, the center of the arc-shaped guide groove is coaxial with the center of the rotating shaft; This coaxial design allows the threaded rod to rotate smoothly as the guide frame slides along the arc-shaped guide groove, avoiding jamming during adjustment and ensuring the accuracy of mold angle adjustment.

[0008] In one possible design, the maximum rotation angle of the threaded rod is ninety degrees; When the threaded rod rotates to a horizontal position, it can drive the limiting plate to move laterally along the L-shaped guide groove.

[0009] In one possible design, the surface of the positioning plate has multiple positioning holes arranged in a matrix. The matrix-arranged positioning holes allow for adjustment of the installation position of the adjustment components according to the mold size.

[0010] In one possible design, the positioning rods at the bottom of the housing are configured as two.

[0011] In one possible design, the system further includes a lateral movement mechanism, a longitudinal movement mechanism, and a laser assembly, wherein the lateral movement mechanism is mounted on the frame, the longitudinal movement mechanism is mounted on the lateral movement mechanism, and the laser assembly is mounted on the longitudinal movement mechanism.

[0012] In this application, when engraving the inner wall of the mold plane, the bottom positioning rod is inserted into the corresponding positioning hole to install two adjusting parts. The two adjusting parts are installed in opposite directions, so that the side wall of the mold is attached to the back side wall of the adjusting parts to achieve basic positioning. Then, the horizontal and vertical moving mechanisms can be controlled to drive the laser component to move, and the engraving operation is performed through the laser component. When carving the inner wall of a mold with a large curved surface or chamfered part, first install at least three adjusting parts in the forward direction according to the size of the mold. Then place the mold on the horizontal section of the limiting plate. The operator then manually screws the screw end in one of the adjusting parts to make the threaded rod rotate. The threaded rod will drive the auxiliary plate to move upward along the vertical section of the L-shaped guide groove. The auxiliary plate will drive the limiting plate to move synchronously, thereby raising one side of the mold. Then manually rotate the screw end in the adjusting part on the opposite side to make the guide frame rotate 90 degrees along the curved guide groove to adjust the threaded rod to a horizontal state. Then manually rotate the threaded rod again to make the auxiliary plate move along the horizontal section of the L-shaped guide groove, thereby driving the limiting plate to abut against the side wall of the mold to complete the limiting. Then the carving operation can be carried out.

[0013] In this utility model, the anti-counterfeiting invisible laser engraving device for injection molds allows the adjustment component to be adjusted in position by manually turning the screw end, without the need to replace the special clamp, ensuring that it can fit and position with the mold. In this utility model, the anti-counterfeiting invisible laser engraving device for injection molds, with its L-shaped guide groove and arc-shaped guide groove structure, allows the limiting plate to achieve vertical lifting or horizontal movement, which can meet the positioning requirements of flat molds and is also suitable for molds that are engraved on curved surfaces or chamfered positions, ensuring the accuracy of invisible laser markings. In this invention, the mold can be positioned normally and adjusted at the same time to tilt the mold so that the arc surface faces the laser component, reducing the angle difference between the two and ensuring the quality of the engraving. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of an anti-counterfeiting invisible laser engraving device for injection molds proposed in this utility model; Figure 2 This is a three-dimensional structural schematic diagram of the adjusting component of the anti-counterfeiting invisible laser engraving device for injection mold proposed in this utility model. Figure 3 This is an exploded structural diagram of the adjusting component of an anti-counterfeiting invisible laser engraving device for an injection mold proposed in this utility model. Figure 4 This is a three-dimensional structural diagram of the vertical movement of the limiting plate of the anti-counterfeiting invisible laser engraving device for injection mold proposed in this utility model. Figure 5 This is a three-dimensional structural diagram of the limiting plate of the anti-counterfeiting invisible laser engraving device for injection molds, which is proposed in this utility model. Figure 6 This is a schematic diagram of the forward installation structure of the adjustment component of the anti-counterfeiting invisible laser engraving device for injection mold proposed in this utility model.

[0015] In the diagram: 1. Lateral movement mechanism; 2. Longitudinal movement mechanism; 3. Laser component; 4. Frame; 5. Positioning plate; 6. Adjusting component; 611. Housing; 612. Positioning rod; 613. Limiting plate; 614. Through hole; 615. L-shaped guide groove; 616. Arc-shaped guide groove; 617. Sub-plate; 618. Guide protrusion; 619. Guide frame; 620. Threaded rod; 621. Tightening end; 622. Connecting seat; 623. Rotating shaft; 624. Mounting seat; 7. Positioning hole. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] In one embodiment: Reference Figure 1 A laser engraving adjustment component for molds includes: a frame 4, a positioning plate 5, an adjustment component 6, a horizontal moving mechanism 1, a vertical moving mechanism 2, and a laser assembly 3.

[0018] The basic support and positioning structure frame 4 is the overall support component of the device. The positioning plate 5 is fixedly installed inside the frame 4. The surface of the positioning plate 5 has multiple positioning holes 7 arranged in a matrix. The positioning holes 7 are used to cooperate with the adjusting component 6 to achieve position fixation. The installation position of the adjusting component 6 can be selected according to the size of the injection mold.

[0019] refer to Figure 2-3 Adjusting component 6 is a component for positioning the mold, which includes a housing 611, a limiting plate 613, a secondary plate 617, a guide frame 619, a connecting seat 622, a threaded rod 620, and a mounting seat 624.

[0020] Two positioning rods 612 are fixedly installed at the bottom of the outer casing 611. The positioning rods 612 cooperate with the positioning holes 7 on the positioning plate 5. By inserting the positioning rods 612 into different positioning holes 7, the installation position of the adjusting component 6 on the positioning plate 5 can be adjusted. The limiting plate 613 is L-shaped, and the outer wall of its vertical section is integrally formed with the sub-plate 617. The sub-plate 617 is located inside the outer shell 611. The inner side wall of the outer shell 611 is provided with an L-shaped guide groove 615. The side wall of the sub-plate 617 is provided with a guide protrusion 618 that cooperates with the L-shaped guide groove 615. The guide protrusion 618 can slide along the vertical or horizontal section of the L-shaped guide groove 615, thereby driving the sub-plate 617 and the limiting plate 613 to move synchronously. A mounting base 624 is fixedly installed on the top of the sub-plate 617. A rotating shaft 623 is fixedly provided on the inner wall of the mounting base 624. The connecting seat 622 is rotatably sleeved on the outer wall of the rotating shaft 623, so that the connecting seat 622 can rotate around the rotating shaft 623. One end of the threaded rod 620 is rotatably connected to the end of the connecting seat 622. An arc-shaped guide groove 616 is provided on the inner wall of the outer shell 611. The guide frame 619 cooperates with the arc-shaped guide groove 616 and can slide along the arc-shaped guide groove 616. The other end of the threaded rod 620 is threaded through the guide frame 619. The outer wall of the housing 611 has a through hole 614, which provides space for the threaded rod 620 to move. The end of the threaded rod 620 away from the connecting seat 622 extends through the through hole 614 to the outside of the housing 611, and a screwing end 621 is fixedly provided at this end. The operator can rotate the threaded rod 620 by screwing the screwing end 621.

[0021] It should be noted that the center of the arc-shaped guide groove 616 and the center of the rotating shaft 623 are the same axis, ensuring that the threaded rod 620 can rotate smoothly when the guide frame 619 slides along the arc-shaped guide groove 616. The maximum rotation angle of the threaded rod 620 is ninety degrees. Only when the threaded rod 620 drives the guide frame 619 to rotate to the beginning or end of the arc-shaped guide groove 616 can it be rotated and drive the sub-plate 617 to move along the L-shaped guide groove 615.

[0022] The horizontal moving mechanism 1 is fixedly installed on the frame 4, the vertical moving mechanism 2 is fixedly installed on the horizontal moving mechanism 1, and the laser component 3 is fixedly installed on the vertical moving mechanism 2. The horizontal moving mechanism 1 can drive the vertical moving mechanism 2 and the laser component 3 to move horizontally, and the vertical moving mechanism 2 can drive the laser component 3 to move vertically. Through the cooperation of the two, the position of the laser component 3 in the frame 4 can be adjusted so that the laser emitting end of the laser component 3 is aligned with the area of ​​the mold to be engraved, thus realizing the invisible laser engraving operation.

[0023] This device employs different positioning and engraving methods depending on the different shapes of the inner wall of the injection mold (flat, curved, or chamfered). The specific operation process is as follows: When engraving the inner wall of the mold plane, select two adjusting parts 6 and install them in reverse: insert the positioning rods 612 of the two adjusting parts 6 into the corresponding positioning holes 7 on the positioning plate 5, so that the back side walls of the outer shells 611 of the two adjusting parts 6 face each other. Then place the mold to be engraved on the positioning plate 5, so that the two side walls of the mold are respectively in contact with the back side walls of the outer shells 611 of the two adjusting parts 6 to achieve the basic positioning of the mold. After positioning is completed, start the horizontal moving mechanism 1 and the vertical moving mechanism 2. The horizontal moving mechanism 1 drives the vertical moving mechanism 2 and the laser component 3 to adjust their positions horizontally, and the vertical moving mechanism 2 drives the laser component 3 to adjust their positions vertically. After the laser emitting end of the laser component 3 is aligned with the area of ​​the mold to be engraved, start the laser component 3 to perform anti-counterfeiting and invisible laser engraving.

[0024] For carving operations on the inner wall of a mold with curved or chamfered surfaces, refer to the following: Figure 6First, according to the size of the mold, install at least three adjusting parts 6 on the positioning plate 5 in the forward direction. Insert the positioning rod 612 of each adjusting part 6 into the corresponding positioning hole 7. Then, place the mold to be carved on the horizontal section of the limiting plate 613 of the three adjusting parts 6, so that the bottom of the mold is in contact with the horizontal section of the limiting plate 613. Then, the operator manually screws the screwing end 621 of one of the adjusting parts 6. The screwing end 621 drives the threaded rod 620 to rotate. Since the threaded rod 620 is threadedly engaged with the guide frame 619, when the threaded rod 620 rotates, it will push the sub-plate 617 to move upward along the vertical section of the L-shaped guide groove 615. The sub-plate 617 drives the limiting plate 613 to move upward synchronously. Figure 4 This raises one side of the mold to an angle suitable for carving curved surfaces or chamfers. Then, the adjusting member 6 opposite the raised side adjusting member 6 is manually turned, and the turning end 621 of the adjusting member 6 is turned, which drives the guide frame 619 to rotate along the arc-shaped guide groove 616 until the threaded rod 620 is adjusted to a horizontal state (at this time, the threaded rod 620 rotates 90 degrees). Continue to manually rotate the threaded rod 620 in this horizontal state. The threaded rod 620 pushes the sub-plate 617 to move along the transverse section of the L-shaped guide groove 615. The sub-plate 617 drives the limiting plate 613 to move synchronously until the side wall of the limiting plate 613 is in contact with the corresponding side wall of the mold. Figure 5 After the mold is fixed in place, the horizontal moving mechanism 1 and the vertical moving mechanism 2 can be activated to adjust the position of the laser component 3 so that it is aligned with the engraving area on the curved surface or chamfer of the mold, and the laser component 3 can be activated to perform the engraving operation.

[0025] This application can be used in the field of laser processing, or in other fields applicable to this application.

[0026] In another embodiment: an anti-counterfeiting invisible laser engraving device for injection molds, which is applied to the field of laser processing. The structure of this embodiment is basically the same as the previous embodiment, except that: the motor output shaft is connected to the drive wheel via a synchronous belt, and driven wheels are symmetrically arranged on both sides of the drive wheel. Both the drive wheel and the driven wheel are mounted on the bottom of the movable seat via a bracket. Two parallel transverse linear guide rails are fixed on the frame 4. The slider at the bottom of the movable seat slides with the guide rails. When the motor starts, it drives the drive wheel to rotate. The drive wheel and the guide rail surface are driven by friction. With the assistance of the driven wheel, the movable seat moves laterally along the guide rails. The longitudinal moving mechanism 2 is fixed on the movable seat.

[0027] The laser component 3 mainly includes a laser generator, a focusing lens, and a control module: the laser generator is used to generate an invisible laser beam (such as the near-infrared band) that meets anti-counterfeiting requirements; the focusing lens is installed at the laser output port to focus the laser beam into a fine beam; the control module is electrically connected to the laser generator and the moving mechanism motor respectively, and can synchronously control the laser start / stop, output power, and moving speed.

[0028] However, as is well known to those skilled in the art, the working principles and wiring methods of the moving mechanism and laser components are conventional methods or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0029] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A counterfeit-proof invisible laser engraving device for injection molds, characterized in that, include: The frame (4) and the positioning plate (5) fixedly installed in the frame (4), wherein the positioning plate (5) is provided with positioning holes (7); Adjusting component (6) includes a housing (611), a limiting plate (613), a secondary plate (617), a mounting base (624), a rotating shaft (623), a connecting base (622), a threaded rod (620), and a guide frame (619). The bottom of the housing (611) is fixed with a positioning rod (612) that mates with a positioning hole (7). The limiting plate (613) is L-shaped, and its vertical section is integrally formed with the secondary plate (617). The secondary plate (617) is located inside the housing (611). The inner wall of the housing (611) is provided with an L-shaped guide groove (615). The sub-plate (617) is provided with a guide protrusion (618) that cooperates with the L-shaped guide groove (615). The mounting base (624) is fixed to the top of the sub-plate (617). The rotating shaft (623) is fixed to the mounting base (624). The connecting seat (622) is rotatably sleeved on the rotating shaft (623). One end of the threaded rod (620) is rotatably connected to the connecting seat (622). The inner wall of the outer shell (611) is provided with an arc-shaped guide groove (616). The guide frame (619) cooperates with the arc-shaped guide groove (616) and allows the threaded rod (620) to pass through.

2. The anti-counterfeiting invisible laser engraving device for injection molds according to claim 1, characterized in that, The outer wall of the housing (611) is provided with a through hole (614) for the threaded rod (620) to move. One end of the threaded rod (620) away from the connecting seat (622) extends through the through hole (614) to the outside of the housing (611), and a screwing end (621) is fixed at this end.

3. The anti-counterfeiting invisible laser engraving device for injection molds according to claim 2, characterized in that, The center of the arc-shaped guide groove (616) is coaxial with the center of the rotating shaft (623); The coaxial arrangement allows the threaded rod (620) to rotate smoothly when the guide frame (619) slides along the arc-shaped guide groove (616), avoiding jamming during the adjustment process and ensuring the accuracy of mold angle adjustment.

4. The anti-counterfeiting invisible laser engraving device for injection molds according to claim 3, characterized in that, The maximum rotation angle of the threaded rod (620) is ninety degrees; When the threaded rod (620) rotates to a horizontal position, it can drive the limiting plate (613) to move laterally along the L-shaped guide groove (615).

5. The anti-counterfeiting invisible laser engraving device for injection molds according to claim 4, characterized in that, The positioning plate (5) has multiple positioning holes (7) arranged in a matrix on its surface. The matrix-arranged positioning holes (7) allow for adjustment of the installation position of the adjusting parts (6) according to the mold size.

6. The anti-counterfeiting and invisible laser engraving device for injection molds according to claim 5, characterized in that, The bottom of the housing (611) has two positioning rods (612).

7. The anti-counterfeiting and invisible laser engraving device for injection molds according to any one of claims 1 to 6, characterized in that, It also includes a lateral moving mechanism (1) and a longitudinal moving mechanism (2). The lateral moving mechanism (1) is mounted on the frame (4), and the longitudinal moving mechanism (2) is mounted on the moving seat of the lateral moving mechanism (1).

8. The anti-counterfeiting and invisible laser engraving device for injection molds according to claim 7, characterized in that, It also includes a laser assembly (3) mounted on a movable seat of the longitudinal moving mechanism (2).

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