Aluminum veneer carving secondary positioning equipment and positioning method

Abstract

The invention provides aluminum veneer carving secondary positioning equipment which comprises a positioning assembly, and the positioning assembly comprises a linkage disc, two electric telescopic rods, two mounting bases, four L-shaped connecting rods, four positioning bases, a positioning pressing plate, an L-shaped pressing rod, a sliding base, a reset plate, a pull rod, two guide rods and a spring. And one ends of the four L-shaped connecting rods are rotationally connected to the lower surface of the linkage disc. An electric telescopic rod drives two mounting seats, the mounting seats drive two L-shaped connecting rods, under the cooperation of a linkage disc, first-time positioning of the aluminum veneer is achieved, along with driving of the electric telescopic rod, a sliding seat slides in a through groove, and an L-shaped pressing rod pushes a positioning pressing plate to be attached to the surface of the aluminum veneer; according to the aluminum veneer positioning device, in the positioning process, large friction force cannot be generated between the aluminum veneer and the positioning table, and the aluminum veneer cannot be scratched.

Description

Technical Field

[0001] The invention relates to a positioning device and a positioning method, in particular to a secondary positioning device and a positioning method for aluminum veneer engraving processing, and belongs to the technical field of aluminum veneer processing. Background Art

[0002] Aluminum veneer is a specially treated building decoration material, and its structure is mainly composed of panels, reinforcement ribs and corners. It is usually processed by chroming and other pre-treatments, and then processed by fluorocarbon spraying technology. Fluorocarbon coatings mainly refer to polyvinylidene fluoride resin (KANAR500), which is divided into three types: primer, topcoat and varnish. Aluminum veneer has the characteristics of light weight, good rigidity, corrosion resistance, strong bending and wind resistance, and long service life. Ultraviolet rays, humidity, atmosphere and other factors will not cause it to corrode or fade.

[0003] Carved aluminum veneer works can be used as decorative elements of building facades, increasing the artistic and fashionable sense of the building and enhancing the overall visual effect. Carving processing can process aluminum veneers into various complex shapes such as planes or arcs, which are suitable for various architectural decoration scenes, such as curtain walls, ceilings, interior decorative panels, etc.

[0004] Aluminum veneer engraving process requires a series of processes, and in order to ensure the stability of the aluminum veneer, the aluminum veneer needs to be positioned.

[0005] A known Chinese public authorized patent (publication number: CN221603884U) discloses a secondary positioning device for aluminum single plate engraving processing, which can evacuate the air inside the vacuum suction pipe, the first connecting pipe and the second connecting pipe when the aluminum single plate is placed on the positioning plate through the operation of a vacuum pump, and then the aluminum single plate placed on the positioning plate can be vacuum-adsorbed, thereby achieving stable positioning of the aluminum single plate, and the electric telescopic rod inside the fixed rod can be operated, so that the adjusting rod can be moved inside the fixed rod, and then the slider can be moved inside the guide groove, and then the distance between the two clamping plates arranged on the positioning plate can be changed, so that the aluminum single plate placed on the positioning plate can be secondary positioned to ensure the stability of the aluminum single plate;

[0006] Through the cooperation of structures such as a vacuum pump, a vacuum suction tube, a connecting pipe, and the cooperation of structures such as an electric telescopic rod and a clamping plate, the aluminum veneer is positioned twice for engraving operations. However, during the first positioning, the aluminum veneer is adsorbed on the positioning plate and is in close contact with the positioning plate. Then, during the second positioning, the two clamping plates clamp the aluminum veneer from both sides. Due to the lack of positioning of the aluminum veneer, the aluminum veneer will slide and rub against the positioning plate during the clamping process, thereby causing scratches on the contact surface of the aluminum veneer, affecting the quality of the aluminum veneer. Therefore, a secondary positioning device and a positioning method for aluminum veneer engraving processing are proposed. Summary of the invention

[0007] In view of this, the present invention provides a secondary positioning device and a positioning method for aluminum veneer engraving processing to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0008] The technical solution of the embodiment of the present invention is implemented as follows: a secondary positioning device for aluminum single plate engraving processing, comprising a positioning assembly, wherein the positioning assembly comprises a linkage disk, two electric telescopic rods, two mounting seats, four L-shaped connecting rods, four positioning seats, a positioning pressure plate, an L-shaped pressure rod, a sliding seat, a reset plate, a pull rod, two guide rods and a spring;

[0009] One end of the four L-shaped connecting rods are rotatably connected to the lower surface of the linkage disk, the other ends of the four L-shaped connecting rods are rotatably connected to the lower surfaces of the four positioning seats, the two mounting seats are symmetrically rotatably connected to the corresponding two L-shaped connecting rods away from the end of the linkage disk, the two ends of the two electric telescopic rods are symmetrically installed on the adjacent surfaces of the two mounting seats, the upper surface of the positioning pressure plate is rotatably connected to one end of the L-shaped pressure rod, the top end of the pull rod is rotatably connected to the lower surface of the L-shaped pressure rod, the bottom end of the pull rod is rotatably connected to the upper surface of the sliding seat, the reset plate is fixedly connected to one end of the sliding seat, the reset plate is slidably connected to the outer side walls of the two guide rods, and the spring is sleeved on the outer side walls of the guide rods.

[0010] Further preferably, one end of the two guide rods is symmetrically fixedly connected to one side of the positioning seat, one end of the spring is fixedly connected to one end of the guide rod away from the positioning seat, and the other end of the spring is fixedly connected to the reset plate.

[0011] Further preferably, a mounting groove is formed on the upper surface of the positioning seat, and one end of the L-shaped pressure rod away from the positioning pressure plate is rotatably connected to the inner wall of the mounting groove.

[0012] Further preferably, a through slot is provided inside the positioning seat, and the outer side wall of the sliding seat is slidably connected to the inner side wall of the through slot.

[0013] Further preferably, a support assembly is installed outside the positioning assembly, and the support assembly includes a positioning platform, four slide grooves, support steel balls, a support plate and four support frames;

[0014] The top ends of the four support frames are symmetrically fixedly connected to the lower surface of the positioning platform, the bottom ends of the support frames are fixedly connected to the upper surface of the support plate, the four slide grooves are symmetrically opened on the upper surface of the positioning platform, and the supporting steel balls are evenly embedded in the upper surface of the positioning platform.

[0015] Further preferably, the outer side wall of the positioning seat is slidably connected to the inner side wall of the slide groove, and the lower surfaces of the two mounting seats are slidably connected to the upper surface of the support plate.

[0016] Further preferably, a connecting shaft is fixedly connected to the upper surface of the linkage disk, and a top end of the connecting shaft is rotatably connected to the lower surface of the positioning platform.

[0017] Further preferably, the linkage disk is located between the support plate and the positioning platform, and the pull rod is located inside the mounting groove.

[0018] Further preferably, a controller is installed on one side of the upper surface of the support plate.

[0019] A method for positioning an aluminum plate engraving process, comprising the following steps:

[0020] Step 1: Place the aluminum veneer on the surface of the positioning table and between the four positioning seats, and support the aluminum veneer with supporting steel balls;

[0021] Step 2: The electric telescopic rod is controlled by the controller to drive two L-shaped connecting rods through the mounting base;

[0022] Step 3: With the cooperation of the linkage disk, the four L-shaped connecting rods move synchronously, the L-shaped connecting rods drive the positioning seats, and the four positioning seats move along the slide groove;

[0023] Step 4: The positioning seat contacts the aluminum veneer through the sliding seat, and the sliding seat pushes the aluminum veneer. When the four sliding seats are respectively attached to the outer wall of the aluminum veneer, the first positioning of the aluminum veneer is completed;

[0024] Step 5: With the driving of the electric telescopic rod, the sliding seat slides in the through slot, and the L-shaped pressure rod drives the positioning pressure plate to move downward and fit with the aluminum veneer;

[0025] Step 6: When the four positioning pressure plates are all in contact with the surface of the aluminum veneer, the second positioning of the aluminum veneer is completed.

[0026] Due to the adoption of the above technical scheme, the embodiment of the present invention has the following advantages: the present invention drives two mounting seats through the electric telescopic rod, and the mounting seats drive two L-shaped connecting rods. Under the cooperation of the linkage disk, the four positioning seats push the aluminum plate through the sliding seat, so that the aluminum plate can be moved to the middle position of the positioning table, thereby realizing the first positioning of the aluminum plate; as the electric telescopic rod is driven, the sliding seat slides in the through groove, and the L-shaped pressure rod pushes the positioning pressure plate to fit the surface of the aluminum plate, thereby realizing the second positioning of the aluminum plate; compared with the prior art, the present invention realizes the adaptive positioning of the aluminum plate during the first positioning, so that the aluminum plate is moved to the middle position of the workbench and the horizontal position of the aluminum plate is defined; during the second positioning, the positioning pressure plate presses the aluminum plate to define the vertical position of the aluminum plate, thereby during the positioning process, the aluminum plate and the positioning table will not generate a large friction force, and the aluminum plate will not be scratched.

[0027] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 This is a structural diagram of a secondary positioning device for engraving and processing an aluminum single plate according to the present invention;

[0030] Figure 2 It is a structural diagram of the positioning platform of the present invention;

[0031] Figure 3 It is a structural diagram of the positioning component of the present invention;

[0032] Figure 4 It is a schematic diagram of the connection between the linkage disk and the L-shaped connecting rod of the present invention;

[0033] Figure 5 It is a schematic structural diagram of the connection between the L-shaped pressure rod and the positioning seat of the present invention;

[0034] Figure 6 It is a schematic diagram of the connection between the L-shaped pressure rod and the pull rod of the present invention;

[0035] Figure 7 It is a structural diagram of the positioning seat of the present invention;

[0036] Figure 8 It is a schematic diagram of the connection between the sliding seat and the positioning seat of the present invention.

[0037] : 101, positioning assembly; 11, linkage disk; 12, connecting shaft; 13, electric telescopic rod; 15, mounting seat; 17, L-shaped connecting rod; 18, positioning seat; 19, positioning pressure plate; 20, L-shaped pressure rod; 22, sliding seat; 23, reset plate; 24, pull rod; 25, mounting groove; 26, through groove; 27, guide rod; 28, spring; 301, support assembly; 31, positioning platform; 32, slide groove; 33, supporting steel balls; 34, support plate; 35, controller; 36, support frame. DETAILED DESCRIPTION

[0038] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0039] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0040] In the prior art, secondary positioning of the aluminum veneer is achieved through the cooperation of structures such as a vacuum pump, a vacuum suction tube, and a connecting tube, as well as the cooperation of structures such as an electric telescopic rod and a clamping plate, so that the position of the aluminum veneer is fixed for engraving operations. However, during the first positioning, the aluminum veneer is adsorbed on the positioning plate, and the aluminum veneer is in close contact with the positioning plate. Then, during the second positioning, the two clamping plates clamp the aluminum veneer from both sides. Due to the lack of positioning of the aluminum veneer, the aluminum veneer will slide and rub against the positioning plate during the clamping process, which will cause scratches on the contact surface of the aluminum veneer, affecting the quality of the aluminum veneer.

[0041] To do this, see Figure 1-Figure 8 The embodiment of the present invention provides a secondary positioning device for aluminum single plate engraving processing, including a positioning assembly 101, the positioning assembly 101 includes a linkage disk 11, two electric telescopic rods 13, two mounting seats 15, four L-shaped connecting rods 17, four positioning seats 18, a positioning pressure plate 19, an L-shaped pressure rod 20, a sliding seat 22, a reset plate 23, a pull rod 24, two guide rods 27 and a spring 28;

[0042] One end of the four L-shaped connecting rods 17 is rotatably connected to the lower surface of the linkage disk 11, and the other end of the four L-shaped connecting rods 17 is rotatably connected to the lower surface of the four positioning seats 18. The two mounting seats 15 are symmetrically rotatably connected to the ends of the corresponding two L-shaped connecting rods 17 away from the linkage disk 11. The two ends of the two electric telescopic rods 13 are symmetrically installed on the adjacent surfaces of the two mounting seats 15. The upper surface of the positioning pressure plate 19 is rotatably connected to one end of the L-shaped pressure rod 20, the top end of the pull rod 24 is rotatably connected to the lower surface of the L-shaped pressure rod 20, and the bottom end of the pull rod 24 is rotatably connected to the upper surface of the sliding seat 22. The reset plate 23 is fixedly connected to one end of the sliding seat 22, and the reset plate 23 is slidably connected to the outer side walls of the two guide rods 27. The spring 28 is sleeved on the outer side walls of the guide rods 27.

[0043] The positioning component 101 is used to realize the double positioning of the aluminum single plate;

[0044] First positioning: The electric telescopic rod 13 drives two mounting seats 15, and the mounting seats 15 drive two L-shaped connecting rods 17. With the cooperation of the linkage plate 11, the four L-shaped connecting rods 17 move synchronously, and the L-shaped connecting rods 17 drive the positioning seats 18. The positioning seats 18 push the aluminum veneer through the sliding seat 22, and then the aluminum veneer can be moved to the middle position of the positioning platform 31, thereby realizing the first positioning of the aluminum veneer;

[0045] Second positioning: When the four sliding seats 22 are all in contact with the outer wall of the aluminum veneer, as the electric telescopic rod 13 is driven, the sliding seat 22 slides in the through groove 26, the sliding seat 22 drives the pull rod 24, the pull rod 24 pulls the L-shaped pressure rod 20 to rotate, and the L-shaped pressure rod 20 pushes the positioning pressure plate 19 to fit the surface of the aluminum veneer, thereby realizing the second positioning of the aluminum veneer.

[0046] In one embodiment, one end of the two guide rods 27 is symmetrically fixedly connected to one side of the positioning seat 18, one end of the spring 28 is fixedly connected to the end of the guide rod 27 away from the positioning seat 18, and the other end of the spring 28 is fixedly connected to the reset plate 23. When the sliding seat 22 slides in the through groove 26, the sliding seat 22 pushes the reset plate 23, and the reset plate 23 squeezes the spring 28. At this time, the positioning pressure plate 19 realizes the positioning action of the aluminum single plate, and when the positioning seat 18 is reset, under the push of the spring 28, the positioning pressure plate 19 resets upward and detaches from the aluminum single plate.

[0047] In one embodiment, a mounting groove 25 is provided on the upper surface of the positioning seat 18, and the end of the L-shaped pressure rod 20 away from the positioning pressure plate 19 is rotatably connected to the inner wall of the mounting groove 25. When the aluminum panel is positioned for the second time, the L-shaped pressure rod 20 rotates in the mounting groove 25, and the position of the L-shaped pressure rod 20 can be limited by the mounting groove 25.

[0048] In one embodiment, a through slot 26 is provided inside the positioning seat 18 , and the outer wall of the sliding seat 22 is slidably connected to the inner wall of the through slot 26 , so that the position of the sliding seat 22 can be limited by the through slot 26 .

[0049] In order to solve the problems existing in the prior art, the embodiment of the present invention provides a secondary positioning device for aluminum plate engraving processing, and solves the problems through the above technical solutions:

[0050] The present invention drives two mounting seats 15 through the electric telescopic rod 13, and the mounting seats 15 drive two L-shaped connecting rods 17. Under the cooperation of the linkage disk 11, the four positioning seats 18 push the aluminum single plate through the sliding seat 22, so that the aluminum single plate can be moved to the middle position of the positioning platform 31, thereby realizing the first positioning of the aluminum single plate. With the driving of the electric telescopic rod 13, the sliding seat 22 slides in the through groove 26, and the L-shaped pressure rod 20 pushes the positioning pressure plate 19 to fit the surface of the aluminum single plate, thereby realizing the second positioning of the aluminum single plate. Compared with the prior art, the present invention realizes the adaptive positioning of the aluminum single plate during the first positioning, so that the aluminum single plate is moved to the middle position of the workbench, and the horizontal position of the aluminum single plate is defined. During the second positioning, the positioning pressure plate 19 presses the aluminum single plate to define the vertical position of the aluminum single plate, and then during the positioning process, the aluminum single plate and the positioning platform 31 will not generate a large friction force, and the aluminum single plate will not be scratched.

[0051] In one embodiment, a support assembly 301 is installed outside the positioning assembly 101, and the support assembly 301 includes a positioning platform 31, four slide grooves 32, support steel balls 33, a support plate 34 and four support frames 36;

[0052] The top ends of the four support frames 36 are symmetrically fixedly connected to the lower surface of the positioning platform 31, and the bottom ends of the support frames 36 are fixedly connected to the upper surface of the support plate 34. The four slide grooves 32 are symmetrically opened on the upper surface of the positioning platform 31, and the support steel balls 33 are evenly embedded in the upper surface of the positioning platform 31.

[0053] The supporting steel balls 33 can roll inside the positioning platform 31 , and then during the first positioning process, the aluminum single plate contacts the positioning platform 31 through the supporting steel balls 33 , which can prevent the aluminum single plate from being scratched.

[0054] In one embodiment, the outer wall of the positioning seat 18 is slidably connected to the inner wall of the slide groove 32, and the lower surfaces of the two mounting seats 15 are slidably connected to the upper surface of the support plate 34. A card slot is provided on the outer wall of the positioning seat 18, and the card slot is card-engaged with the positioning platform 31, thereby enhancing the stability of the positioning seat 18.

[0055] In one embodiment, a connecting shaft 12 is fixedly connected to the upper surface of the linkage disk 11 , and a top end of the connecting shaft 12 is rotatably connected to the lower surface of the positioning platform 31 . The connecting shaft 12 can enhance the stability of the linkage disk 11 .

[0056] In one embodiment, the linkage disk 11 is located between the support plate 34 and the positioning platform 31 , and the pull rod 24 is located inside the mounting groove 25 . The mounting groove 25 can be used to avoid the position of the pull rod 24 .

[0057] In one embodiment, a controller 35 is installed on one side of the upper surface of the support plate 34 , and a signal end of the controller 35 is connected to a signal end of the electric telescopic rod 13 . The model of the controller 35 is: OHR-PR10.

[0058] A method for positioning an aluminum plate engraving process, comprising the following steps:

[0059] Step 1: Place the aluminum veneer on the surface of the positioning table and between the four positioning seats, and support the aluminum veneer with supporting steel balls;

[0060] Step 2: The electric telescopic rod is controlled by the controller to drive two L-shaped connecting rods through the mounting base;

[0061] Step 3: With the cooperation of the linkage disk, the four L-shaped connecting rods move synchronously, the L-shaped connecting rods drive the positioning seats, and the four positioning seats move along the slide groove;

[0062] Step 4: The positioning seat contacts the aluminum veneer through the sliding seat, and the sliding seat pushes the aluminum veneer. When the four sliding seats are respectively attached to the outer wall of the aluminum veneer, the first positioning of the aluminum veneer is completed;

[0063] Step 5: With the driving of the electric telescopic rod, the sliding seat slides in the through slot, and the L-shaped pressure rod drives the positioning pressure plate to move downward and fit with the aluminum veneer;

[0064] Step 6: When the four positioning pressure plates are all in contact with the surface of the aluminum veneer, the second positioning of the aluminum veneer is completed.

[0065] When the present invention is working: the aluminum single plate is placed on the surface of the positioning platform 31 and located between the four positioning seats 18, the aluminum single plate is supported by the supporting steel balls 33, the electric telescopic rod 13 is controlled to work by the controller 35, the electric telescopic rod 13 drives the two L-shaped connecting rods 17 through the mounting seat 15, and under the cooperation of the linkage plate 11, the four L-shaped connecting rods 17 move synchronously, the L-shaped connecting rods 17 drive the positioning seats 18, and the four positioning seats 18 move along the slide groove 32, the positioning seat 18 contacts the aluminum single plate through the sliding seat 22, and the sliding seat 22 pushes the aluminum single plate. When the four sliding seats 22 are respectively attached to the outer wall of the aluminum single plate, the aluminum single plate moves to the middle position of the positioning platform 31, and the first positioning of the aluminum single plate is achieved;

[0066] With the drive of the electric telescopic rod 13, the sliding seat 22 slides in the through groove 26, the sliding seat 22 drives the pull rod 24, the pull rod 24 pulls the L-shaped pressure rod 20 to rotate, and the L-shaped pressure rod 20 pushes the positioning pressure plate 19 to fit the surface of the aluminum veneer. When the four positioning pressure plates 19 are all in contact with the surface of the aluminum veneer, the second positioning of the aluminum veneer is completed.

[0067] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of various changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A secondary positioning device for aluminum plate engraving, comprising a positioning component (101), characterized in that: The positioning assembly (101) comprises a linkage disk (11), two electric telescopic rods (13), two mounting seats (15), four L-shaped connecting rods (17), four positioning seats (18), a positioning pressure plate (19), an L-shaped pressure rod (20), a sliding seat (22), a reset plate (23), a pull rod (24), two guide rods (27) and a spring (28); One end of each of the four L-shaped connecting rods (17) is rotatably connected to the lower surface of the linkage disk (11), and the other end of each of the four L-shaped connecting rods (17) is rotatably connected to the lower surface of the four positioning seats (18). The two mounting seats (15) are symmetrically rotatably connected to one end of the corresponding two L-shaped connecting rods (17) away from the linkage disk (11). The two ends of the two electric telescopic rods (13) are symmetrically mounted on the adjacent surfaces of the two mounting seats (15). The positioning pressure plate (19 ) is rotatably connected to one end of the L-shaped pressure rod (20), the top end of the pull rod (24) is rotatably connected to the lower surface of the L-shaped pressure rod (20), the bottom end of the pull rod (24) is rotatably connected to the upper surface of the sliding seat (22), the reset plate (23) is fixedly connected to one end of the sliding seat (22), the reset plate (23) is slidably connected to the outer side walls of the two guide rods (27), and the spring (28) is sleeved on the outer side walls of the guide rods (27).

2. The secondary positioning device for aluminum plate engraving according to claim 1 is characterized in that: One end of the two guide rods (27) is symmetrically fixedly connected to one side of the positioning seat (18), one end of the spring (28) is fixedly connected to one end of the guide rod (27) away from the positioning seat (18), and the other end of the spring (28) is fixedly connected to the reset plate (23).

3. The secondary positioning device for aluminum veneer engraving processing according to claim 2 is characterized in that: The upper surface of the positioning seat (18) is provided with a mounting groove (25), and one end of the L-shaped pressure rod (20) away from the positioning pressure plate (19) is rotatably connected to the inner side wall of the mounting groove (25).

4. The secondary positioning device for aluminum plate engraving according to claim 3 is characterized in that: A through slot (26) is provided inside the positioning seat (18), and the outer side wall of the sliding seat (22) is slidably connected to the inner side wall of the through slot (26).

5. The secondary positioning device for aluminum plate engraving according to claim 4 is characterized in that: A support assembly (301) is installed outside the positioning assembly (101), and the support assembly (301) includes a positioning platform (31), four slide grooves (32), support steel balls (33), a support plate (34) and four support frames (36); The top ends of the four support frames (36) are symmetrically fixedly connected to the lower surface of the positioning platform (31), the bottom ends of the support frames (36) are fixedly connected to the upper surface of the support plate (34), the four slide grooves (32) are symmetrically opened on the upper surface of the positioning platform (31), and the support steel balls (33) are evenly embedded in the upper surface of the positioning platform (31).

6. The secondary positioning device for aluminum plate engraving according to claim 5 is characterized in that: The outer side wall of the positioning seat (18) is slidably connected to the inner side wall of the sliding groove (32), and the lower surfaces of the two mounting seats (15) are both slidably connected to the upper surface of the support plate (34).

7. The secondary positioning device for aluminum plate engraving according to claim 6 is characterized by: The upper surface of the linkage disk (11) is fixedly connected to a connecting shaft (12), and the top end of the connecting shaft (12) is rotatably connected to the lower surface of the positioning platform (31).

8. The secondary positioning device for aluminum plate engraving according to claim 7 is characterized in that: The linkage disk (11) is located between the support plate (34) and the positioning platform (31), and the pull rod (24) is located inside the installation groove (25).

9. The secondary positioning device for aluminum plate engraving according to claim 8 is characterized in that: A controller (35) is installed on one side of the upper surface of the support plate (34).

10. A method for positioning an aluminum plate engraving process, applied to the aluminum plate engraving process secondary positioning device as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Place the aluminum veneer on the surface of the positioning table and between the four positioning seats, and support the aluminum veneer with supporting steel balls; Step 2: The electric telescopic rod is controlled by the controller to drive two L-shaped connecting rods through the mounting base; Step 3: With the cooperation of the linkage disk, the four L-shaped connecting rods move synchronously, the L-shaped connecting rods drive the positioning seats, and the four positioning seats move along the slide groove; Step 4: The positioning seat contacts the aluminum veneer through the sliding seat, and the sliding seat pushes the aluminum veneer. When the four sliding seats are respectively attached to the outer wall of the aluminum veneer, the first positioning of the aluminum veneer is completed; Step 5: With the driving of the electric telescopic rod, the sliding seat slides in the through slot, and the L-shaped pressure rod drives the positioning pressure plate to move downward and fit with the aluminum veneer; Step 6: When the four positioning pressure plates are all in contact with the surface of the aluminum veneer, the second positioning of the aluminum veneer is completed.

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