A double-window flip-over laser-engraving jig

CN224866588UActive Publication Date: 2026-10-20HUAFU PRECISION TECHNOLOGY (MAANSHAN) CO LTD AUTO PARTS R&D BRANCH
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Patent Information

Application Number
CN202522484755.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-11-24
Publication Date
2026-10-20
Estimated Expiration
2035-11-24

AI Technical Summary

Technical Problem

[0004]该通用型镭雕定位治具无法对产品进行翻转,导致产品定位后无法对其底侧表面进行镭雕,也无法实现双工位镭雕

Benefits of technology

[0016]根据上述技术方案,本实用新型提供了一种双窗口翻转镭雕治具,该双窗口翻转镭雕治具包括对称设置的两个升降机构,其中一个所述升降机构上安装有旋转单元,另一个所述升降机构上安装有从动轴座,所述旋转单元面向所述从动轴座的一端安装有第一连接板,所述从动轴座面向所述旋转单元的一端安装有第二连接板,所述第一连接板和第二连接板之间连接有载板,所述载板上设置有前后对称的两个矩形窗口,所述载板的前后侧各设置有多个侧挡块,所述载板中部左右对称设置有两个第一中间挡块,两个所述第一中间挡块之间左右对称设置有两个第二中间挡块,所述载板的一端设置有第一端挡块,所述载板的另一端设置有第二端挡块,所述载板的周围设置有多个夹持气缸。

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Abstract

The utility model discloses a double window turnover laser etching fixture, including two elevating mechanisms, install rotary unit and driven shaft seat respectively, rotary unit one end is installed with first connecting plate, and driven shaft seat one end is installed with second connecting plate, and the first connecting plate is connected with the second connecting plate between the carrier plate, and is equipped with two rectangular windows on the carrier plate, and each is equipped with a plurality of side stoppers on the front and back sides of carrier plate, and the middle part of carrier plate is equipped with two first intermediate stoppers left and right symmetry, and two second intermediate stoppers are equipped left and right symmetry between two first intermediate stoppers, and one end of carrier plate is equipped with first end stopper, and the other end of carrier plate is equipped with second end stopper, and the periphery of carrier plate is equipped with a plurality of clamping pneumatic cylinders. This double window turnover laser etching fixture has two laser etching windows, and can turn over the product in cooperation with rotary unit, and carries out laser etching to the inside of two areas corresponding to the product and rectangular window, and can carry the product to low position and place on corresponding assembly line to convey after laser etching is completed.
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Description

Technical Field

[0001] This utility model relates to the field of laser engraving, specifically to a double-window flip laser engraving fixture. Background Technology

[0002] Laser engraving uses a laser beam to create permanent marks on the surface of various materials. It can be done by evaporating the surface material to expose the deeper material, by causing chemical and physical changes in the surface material through light energy to create marks, or by burning away part of the material with light energy to reveal the desired pattern or text.

[0003] Patent CN210254747U discloses a universal laser engraving positioning fixture, including a laser engraving positioning fixture and an oil spraying clamp. The oil spraying clamp is set on the laser engraving positioning fixture. Multiple positioning posts are fixedly set on the laser engraving positioning fixture. Each positioning post has a cylindrical protrusion at its top, and the diameter of the protrusion of at least one post is smaller than the diameter of the protrusions of the other posts. The side of the oil spraying clamp facing the laser engraving positioning fixture has the same number of drill holes as the number of positioning posts of the laser engraving positioning fixture, and the inner diameter of at least one drill hole is smaller than the inner diameter of the other drill holes. The drill holes are used to accommodate the protrusions of the positioning posts of the laser engraving positioning fixture.

[0004] This general-purpose laser engraving positioning fixture cannot flip the product, which means that the bottom surface of the product cannot be laser engraved after it is positioned, and dual-station laser engraving cannot be achieved. Utility Model Content

[0005] The purpose of this utility model is to provide a double-window flip laser engraving fixture. This double-window flip laser engraving fixture has two laser engraving windows. With the help of a rotating unit, the product can be flipped and laser engraved in the two areas corresponding to the rectangular windows. After the laser engraving is completed, the product can be carried to a lower position by a lifting mechanism and placed on the corresponding production line for conveying.

[0006] To achieve the above objectives, this utility model provides a double-window flip laser engraving fixture, which includes two symmetrically arranged lifting mechanisms. One lifting mechanism is equipped with a rotating unit, and the other lifting mechanism is equipped with a driven shaft seat. A first connecting plate is installed at the end of the rotating unit facing the driven shaft seat, and a second connecting plate is installed at the end of the driven shaft seat facing the rotating unit. A carrier plate is connected between the first and second connecting plates. The carrier plate has two rectangular windows symmetrically arranged front and back. Multiple side blocks are arranged on the front and back sides of the carrier plate. Two first intermediate blocks are symmetrically arranged left and right in the middle of the carrier plate, and two second intermediate blocks are symmetrically arranged left and right between the two first intermediate blocks. A first end block is arranged at one end of the carrier plate, and a second end block is arranged at the other end of the carrier plate. Multiple clamping cylinders are arranged around the carrier plate.

[0007] Preferably, the lifting mechanism includes a base plate and a gantry frame disposed on the base plate. Two guide rods are symmetrically arranged between the top plate of the gantry frame and the base plate. A square housing for mounting the rotating unit or driven shaft seat is slidably disposed on the guide rod. A lifting cylinder is installed at the upper end of the top plate. The cylinder shaft of the lifting cylinder passes downward through the top plate and is connected to the square housing.

[0008] Preferably, limit buffers are installed on both sides of the lifting cylinder on the top plate, and the limit buffers are configured to contact the top surface of the square housing for limit buffering.

[0009] Preferably, the rotating unit includes a tilting cylinder and a first connecting plate mounted on the shaft end of the tilting cylinder. The first connecting plate is provided with a plurality of first mounting holes. The first end of the carrier plate is provided with a first waist hole corresponding to the plurality of first mounting holes. At least two first bolts are inserted into the first waist hole. The first bolts pass through at least one of the first mounting holes and are then locked.

[0010] Preferably, a rotating shaft is rotatably disposed inside the driven shaft seat, and the end of the rotating shaft is connected to a second connecting plate. The second connecting plate is provided with a plurality of second mounting holes, and the second end of the carrier plate is provided with a first waist hole corresponding to the plurality of second mounting holes. At least two first bolts are inserted into the first waist hole, and the first bolts are locked after passing through at least one of the second mounting holes.

[0011] Preferably, the two portal frames are provided with connecting corner plates of equal height on the same side; a horizontally arranged U-shaped plate is fixed on the connecting corner, and the outer end of the U-shaped plate is provided with two parallel elongated holes; two laser engraving machines are installed on the U-shaped plate, and the two laser engraving machines are respectively used to laser engrave the part of the product located in the two rectangular windows.

[0012] Preferably, the carrier plate has two second waist holes extending forward and backward at the side stop, and a first screw is inserted into the second waist hole and screwed into a first screw hole at the bottom of the side stop; the carrier plate has two third waist holes extending forward and backward at the first middle stop, and a second screw is inserted into the third waist hole and screwed into a second screw hole at the bottom of the first middle stop; the carrier plate has two fourth waist holes extending forward and backward at the second middle stop, and a third screw is inserted into the fourth waist hole and screwed into a third screw hole at the bottom of the second middle stop.

[0013] Preferably, the first end block is fixed to the carrier plate by at least two fourth screws; the carrier plate is provided with two fifth waist holes extending to the left and right at the second end block, and a fifth screw is inserted into the fifth waist hole, and the fifth screw is screwed into the fourth screw hole preset at the bottom of the second end block.

[0014] Preferably, the carrier plate has two notches at each end, and vertical plates are installed at the two ends of the carrier plate at the notches by a sixth screw. A horizontal plate is installed at the bottom of the vertical plate by a seventh screw, and the clamping cylinder is installed on the horizontal plate by an eighth screw.

[0015] Preferably, the vertical plate is provided with a seventh slotted hole through which the sixth screw passes, and the horizontal plate is provided with an eighth slotted hole through which the eighth screw passes.

[0016] According to the above technical solution, this utility model provides a double-window flip laser engraving fixture, which includes two symmetrically arranged lifting mechanisms. One of the lifting mechanisms is equipped with a rotating unit, and the other lifting mechanism is equipped with a driven shaft seat. A first connecting plate is installed on the end of the rotating unit facing the driven shaft seat, and a second connecting plate is installed on the end of the driven shaft seat facing the rotating unit. A carrier plate is connected between the first and second connecting plates. The carrier plate is provided with two rectangular windows symmetrically arranged front and back. Multiple side blocks are provided on the front and back sides of the carrier plate. Two first intermediate blocks are symmetrically arranged left and right in the middle of the carrier plate. Two second intermediate blocks are symmetrically arranged left and right between the two first intermediate blocks. A first end block is provided at one end of the carrier plate, and a second end block is provided at the other end of the carrier plate. Multiple clamping cylinders are arranged around the carrier plate.

[0017] The usage and beneficial effects of this double-window flip laser engraving fixture are as follows: When in use, after the robotic arm grabs the product and places it on the fixture surface of the carrier plate, the product is limited by multiple side blocks on both sides and the first and second end blocks at the ends. Then, the two first intermediate blocks in the middle are adjusted to position one side of the product, and the two second intermediate blocks in the middle are adjusted to position the other side of the product. The connecting part in the middle of the product passes through the gap between the two second intermediate blocks. Then, the product is clamped by multiple clamping cylinders around it, so that the product is stably fixed. Then, the carrier plate is rotated by the rotating unit. Under the coordinated action of the first connecting plate, the second connecting plate and the driven shaft seat, the product is flipped. Since the engraving position of the product is inside the product, the laser engraving machine above can be used for laser engraving after the product is flipped. After the laser engraving is completed, the product is lowered by the lifting mechanism at both ends. After it is lowered to a certain distance below the production line, the clamping cylinder is released, allowing the product to fall onto the production line. Finally, all parts return to their original positions and the next work begins.

[0018] This dual-window flip laser engraving fixture has two laser engraving windows. With the help of a rotating unit, it can flip the product and perform laser engraving on the two areas corresponding to the rectangular windows. After the laser engraving is completed, the product can be carried to a lower position by a lifting mechanism and placed on the corresponding production line for conveying.

[0019] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a front view structural diagram of a preferred embodiment of a dual-window flip laser engraving fixture; Figure 2 This is a schematic diagram of the installation and connection structure between the rotating unit and the lifting mechanism; Figure 3 This is a schematic diagram of the installation and connection structure between the driven shaft seat and the lifting mechanism; Figure 4 This is a schematic diagram of the front structure of the carrier plate; Figure 5 This is a schematic diagram of the back structure of the carrier plate; Figure 6 This is a schematic diagram of a dual-window flip-up laser engraving fixture containing the product.

[0021] Explanation of reference numerals in the attached figures 101-Carrier plate; 102-Side stop block; 103-Second end stop block; 104-First end stop block; 105-Second waist hole; 106-Fifth waist hole; 107-First intermediate stop block; 108-Second intermediate stop block; 109-Third waist hole; 110-Fourth waist hole; 111-First waist hole; 112-First bolt; 113-Notch; 114-Vertical plate; 115-Clamping cylinder; 116-Rectangular window; 117-Horizontal plate; 118-Fourth screw; 119-Seventh waist hole; 120-Sixth screw; 121-Eighth waist hole Hole; 122-Eighth screw; 123-First screw; 124-Third screw; 125-Second screw; 2-Lifting mechanism; 201-Base plate; 202-Gantry frame; 203-Guide rod; 204-Square housing; 205-First connecting plate; 206-First mounting hole; 207-Tilting cylinder; 208-Lifting cylinder; 209-Driven shaft seat; 210-Second connecting plate; 211-Second mounting hole; 212-Limit buffer; 3-U-shaped plate; 4-Connecting corner plate; 5-Product; 6-Laser engraving machine; 7-Elongated hole. Detailed Implementation

[0022] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0023] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside" in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as a limitation on the term.

[0024] See Figure 1-6 The double-window flip laser engraving fixture shown includes two symmetrically arranged lifting mechanisms 2. One lifting mechanism 2 is equipped with a rotating unit, and the other lifting mechanism 2 is equipped with a driven shaft seat 209. A first connecting plate 205 is mounted on the end of the rotating unit facing the driven shaft seat 209, and a second connecting plate 210 is mounted on the end of the driven shaft seat 209 facing the rotating unit. A carrier plate 101 connects the first connecting plate 205 and the second connecting plate 210. The plate 101 has two rectangular windows 116 symmetrically arranged front and back. Multiple side blocks 102 are arranged on the front and back sides of the plate 101. Two first intermediate blocks 107 are symmetrically arranged in the middle of the plate 101. Two second intermediate blocks 108 are symmetrically arranged between the two first intermediate blocks 107. A first end block 104 is arranged at one end of the plate 101. A second end block 103 is arranged at the other end of the plate 101. Multiple clamping cylinders 115 are arranged around the plate 101.

[0025] Through the implementation of the above technical solution, in use, after the robotic arm grasps the product 5 and places it on the jig surface of the carrier plate 101, the product 5 is limited by multiple side stops 102 on both sides and the first end stop 104 and the second end stop 103 at the ends. Then, the two first intermediate stops 107 in the middle are adjusted to position one side of the product 5, and the two second intermediate stops 108 in the middle are adjusted to position the other side of the product 5. The connecting part in the middle of the product 5 passes through the gap between the two second intermediate stops 108, and then the product is clamped by multiple clamping cylinders 115 arranged around it. Product 5 is clamped to secure it stably. Then, the carrier plate 101 is rotated by the rotating unit. Under the coordinated action of the first connecting plate 205, the second connecting plate 210, and the driven shaft seat 209, product 5 is flipped. Since the engraving position of product 5 is inside, after flipping product 5, it can be laser-engraved by the laser engraving machine 6 above. After laser engraving, product 5 is lowered by the lifting mechanisms 2 at both ends. After it has descended a certain distance to the lower assembly line, the clamping cylinder 115 is released, allowing product 5 to fall onto the assembly line. Finally, all components return to their original positions, and the next operation begins. This double-window flip laser engraving fixture has two laser engraving windows. With the help of the rotating unit, product 5 can be flipped to perform laser engraving on the two areas corresponding to the rectangular window 116. After laser engraving, product 5 can be carried to a lower position by the lifting mechanism 2 and placed on the corresponding assembly line for conveying.

[0026] In this embodiment, to further provide a lifting mechanism 2, the lifting mechanism 2 includes a base plate 201 and a gantry frame 202 disposed on the base plate 201. Two guide rods 203 are symmetrically arranged between the top plate of the gantry frame 202 and the base plate 201. A square housing 204 for mounting the rotating unit or driven shaft seat 209 is slidably disposed on the guide rod 203. A lifting cylinder 208 is mounted on the upper end of the top plate. The cylinder shaft of the lifting cylinder 208 passes downward through the top plate and connects to the square housing 204. During lifting, the lifting cylinders 208 at both ends work synchronously, respectively driving the corresponding square housing 204 to carry the rotating unit or driven shaft seat 209 vertically, thereby carrying the carrier plate 101 vertically. A floating joint can be provided at the connection between the lifting cylinder 208 and the square housing 204.

[0027] In this embodiment, limit buffers 212 are installed on both sides of the lifting cylinder 208 on the top plate. The limit buffers 212 are configured to contact the top surface of the square housing 204 for limiting and buffering. The upward position of the square housing 204 is limited by the limit buffers 212.

[0028] In this embodiment, to further provide a rotating unit, the rotating unit includes a tilting cylinder 207 and a first connecting plate 205 mounted on the shaft end of the tilting cylinder 207. The first connecting plate 205 is provided with a plurality of first mounting holes 206. The first end of the carrier plate 101 is provided with a first waist hole 111 corresponding to the plurality of first mounting holes 206. At least two first bolts 112 are inserted into the first waist hole 111, and the first bolts 112 pass through at least one of the first mounting holes 206 and are then locked. The left and right positions of the carrier can be adjusted by adjusting the mounting to different positions of the first mounting holes 206.

[0029] In this embodiment, a rotating shaft is rotatably mounted inside the driven shaft seat 209. The end of the rotating shaft is connected to a second connecting plate 210. The second connecting plate 210 is provided with a plurality of second mounting holes 211. The second end of the carrier plate 101 is provided with a first waist hole 111 corresponding to the plurality of second mounting holes 211. At least two first bolts 112 are inserted into the first waist hole 111. The first bolts 112 pass through at least one of the second mounting holes 211 and are then locked. The inner cavity of the driven shaft seat 209 is connected to the rotating shaft by a bearing. The first waist hole 111 and the first bolt 112 at both ends of the carrier plate 101 have the same structure. The first waist hole 111 is countersunk, and the cap end of the first bolt 112 is recessed to avoid obstructing the product 5. The lower end of the first bolt 112 is locked by a nut. The left and right positions of the carrier plate 101 can be adjusted by adjusting the mounting to different positions of the first mounting holes 206.

[0030] In this embodiment, connecting corner plates 4 of equal height are provided on the same side of the two portal frames 202; a horizontally arranged U-shaped plate 3 is fixed on the connecting corner, and two parallel elongated holes 7 are provided on the outer end of the U-shaped plate 3; two laser engraving machines 6 are installed on the U-shaped plate 3, and the two laser engraving machines 6 are respectively used to laser engrave the parts of the product 5 located in the two rectangular windows 116. At least two connecting corner plates 4 are provided on the side of each portal frame 202 to improve the strength of the connecting U-shaped plate 3. The outer end of the U-shaped plate 3 is used to install the laser engraving machine 6. The engraving head of the laser engraving machine 6 extends to the position above the carrier plate 101. The third bolt for installing the laser engraving machine 6 passes through the elongated holes 7 for easy position adjustment. The main body of the laser engraving machine 6 includes a vertical cylinder and a horizontal cylinder connected to the vertical cylinder. The engraving head is connected to the shaft end of the horizontal cylinder. The position of the engraving head can be adjusted in two-dimensional space through the vertical cylinder and the horizontal cylinder.

[0031] In this embodiment, the carrier plate 101 has two second waist holes 105 extending forward and backward at the side stop 102, and a first screw 123 is inserted into the second waist hole 105, which is screwed into a first screw hole at the bottom of the side stop 102; the carrier plate 101 has two third waist holes 109 extending forward and backward at the first intermediate stop 107, and a second screw 125 is inserted into the third waist hole 109, which is screwed into a second screw hole at the bottom of the first intermediate stop 107; the carrier plate 101 has two fourth waist holes 110 extending forward and backward at the second intermediate stop 108, and a third screw 124 is inserted into the fourth waist hole 110, which is screwed into a third screw hole at the bottom of the second intermediate stop 108. This configuration allows the side stops 102, the first intermediate stops 107, and the second intermediate stops 108 to be adjusted in the front-to-back direction to accommodate different products 5. The two first intermediate stops 107, in conjunction with the two side stops 102 on one side, limit the left side of the product 5, while the two second intermediate stops 108, in conjunction with the two side stops 102 on the other side, limit the right side of the product 5, preventing the two parts of the product 5 from shaking during flipping and thus avoiding deformation or damage to the relatively weak connecting parts.

[0032] In this embodiment, the first end block 104 is fixed to the carrier plate 101 by at least two fourth screws 118; the carrier plate 101 has two left-right extending fifth waist holes 106 located at the second end block 103, and fifth screws are inserted into the fifth waist holes 106, which are screwed into the fourth screw holes preset at the bottom of the second end block 103. With this arrangement, the first end block 104 is fixedly set, and the second end block 103 can be adjusted left and right to adapt to different products 5.

[0033] In this embodiment, two recesses 113 are provided at each end of the carrier plate 101. Vertical plates 114 are mounted at both ends of the carrier plate 101 at the recesses 113 via sixth screws 120. A horizontal plate 117 is mounted at the bottom of the vertical plates 114 via seventh screws. The clamping cylinder 115 is mounted on the horizontal plate 117 via an eighth screw 122. This arrangement allows the clamping cylinder 115 to be lowered, enabling adjustment of the clamping thickness and height. The type of clamping cylinder 115 can be selected as needed, such as a pressure clamping cylinder or a rotary clamping cylinder.

[0034] In this embodiment, the vertical plate 114 is provided with a seventh slot 119 through which the sixth screw 120 passes, and the horizontal plate 117 is provided with an eighth slot 121 through which the eighth screw 122 passes. This arrangement allows the clamping cylinder 115 to be adjusted horizontally and vertically.

[0035] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0036] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0037] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A double-window flip laser engraving fixture, characterized in that, The device includes two symmetrically arranged lifting mechanisms (2), one of which is equipped with a rotating unit, and the other is equipped with a driven shaft seat (209). A first connecting plate (205) is installed on the end of the rotating unit facing the driven shaft seat (209), and a second connecting plate (210) is installed on the end of the driven shaft seat (209) facing the rotating unit. A carrier plate (101) connects the first connecting plate (205) and the second connecting plate (210), and the carrier plate (101) is provided with symmetrical front and rear features. Two rectangular windows (116) are provided. Multiple side blocks (102) are provided on the front and rear sides of the carrier plate (101). Two first intermediate blocks (107) are symmetrically arranged in the middle of the carrier plate (101). Two second intermediate blocks (108) are symmetrically arranged between the two first intermediate blocks (107). A first end block (104) is provided at one end of the carrier plate (101). A second end block (103) is provided at the other end of the carrier plate (101). Multiple clamping cylinders (115) are provided around the carrier plate (101).

2. The dual-window flip laser engraving fixture according to claim 1, characterized in that, The lifting mechanism (2) includes a base plate (201) and a gantry frame (202) disposed on the base plate (201). Two guide rods (203) are symmetrically arranged between the top plate of the gantry frame (202) and the base plate (201). A square housing (204) for mounting the rotating unit or driven shaft seat (209) is slidably disposed on the guide rod (203). A lifting cylinder (208) is installed at the upper end of the top plate. The cylinder shaft of the lifting cylinder (208) passes downward through the top plate and is connected to the square housing (204).

3. The dual-window flip laser engraving fixture according to claim 2, characterized in that, Limiting buffers (212) are installed on both sides of the lifting cylinder (208) on the top plate. The limiting buffers (212) are configured to contact the top surface of the square housing (204) for limiting and buffering.

4. The dual-window flip laser engraving fixture according to claim 2, characterized in that, The rotating unit includes a tilting cylinder (207) and a first connecting plate (205) mounted on the shaft end of the tilting cylinder (207). The first connecting plate (205) is provided with a plurality of first mounting holes (206). The first end of the carrier plate (101) is provided with a first waist hole (111) corresponding to the plurality of first mounting holes (206). At least two first bolts (112) are inserted into the first waist hole (111). The first bolts (112) pass through at least one of the first mounting holes (206) and are then locked.

5. The dual-window flip laser engraving fixture according to claim 2, characterized in that, A rotating shaft is rotatably disposed inside the driven shaft seat (209), and the end of the rotating shaft is connected to the second connecting plate (210). The second connecting plate (210) is provided with a plurality of second mounting holes (211). The second end of the carrier plate (101) is provided with a first waist hole (111) corresponding to the plurality of second mounting holes (211). At least two first bolts (112) are inserted into the first waist hole (111), and the first bolts (112) are locked after passing through at least one of the second mounting holes (211).

6. The dual-window flip laser engraving fixture according to claim 2, characterized in that, Two portal frames (202) are provided with connecting corner plates (4) of equal height on the same side; A horizontally arranged U-shaped plate (3) is fixed on the connecting corner, and two parallel elongated holes (7) are provided at the outer end of the U-shaped plate (3). Two laser engraving machines (6) are installed on the U-shaped plate (3). The two laser engraving machines (6) are used to engrave the parts of the product (5) located in the two rectangular windows (116).

7. The dual-window flip laser engraving fixture according to claim 2, characterized in that, The carrier plate (101) is provided with two second waist holes (105) extending forward and backward at the side block (102). A first screw (123) is inserted into the second waist hole (105) and the first screw (123) is screwed into the first screw hole at the bottom of the side block (102). The carrier plate (101) is provided with two third waist holes (109) extending forward and backward at the first intermediate block (107). A second screw (125) is inserted into the third waist hole (109) and screwed into the second screw hole at the bottom of the first intermediate block (107). The carrier plate (101) is provided with two fourth waist holes (110) extending forward and backward at the second intermediate block (108). A third screw (124) is inserted into the fourth waist hole (110) and screwed into the third screw hole at the bottom of the second intermediate block (108).

8. The dual-window flip laser engraving fixture according to claim 2, characterized in that, The first end stop (104) is fixed to the carrier plate (101) by at least two fourth screws (118); The carrier plate (101) is provided with two fifth waist holes (106) extending to the left and right at the second end block (103). A fifth screw is inserted into the fifth waist hole (106) and screwed into the fourth screw hole at the bottom of the second end block (103).

9. The dual-window flip laser engraving fixture according to claim 2, characterized in that, The carrier plate (101) has two notches (113) at each end. Vertical plates (114) are installed at the two ends of the carrier plate (101) at the notches (113) by a sixth screw (120). A horizontal plate (117) is installed at the bottom of the vertical plate (114) by a seventh screw. The clamping cylinder (115) is installed on the horizontal plate (117) by an eighth screw (122).

10. The dual-window flip laser engraving fixture according to claim 9, characterized in that, The vertical plate (114) is provided with a seventh waist hole (119) through which the sixth screw (120) passes, and the horizontal plate (117) is provided with an eighth waist hole (121) through which the eighth screw (122) passes.