A multi-stage adjustable fixture

Abstract

The invention discloses a multi-section adjustable jig, which comprises a support plate, an upper profiling block, a left profiling block, a right profiling block, a lower profiling block, a middle profiling block, a positioning Y profiling block, a positioning profiling block Y seat, a left hinge profiling block and a right hinge profiling block. Guide rail slider mechanisms are respectively provided on the upper side, the left side and the right side of the support plate. These guide rail slider mechanisms are respectively connected to the upper side profiling block, the left side profiling block and the right side profiling block to drive the three side profiling blocks to move toward or away from the center of the support plate; the left hinge profiling block and the right hinge profiling block are arranged on both sides of the lower side profiling block, and the three and the middle profiling block are all fixed on the support plate; the positioning profiling block Y seat is arranged on the middle profiling block and fixedly connected to the support plate, and the positioning Y profiling block is adaptively mounted on the positioning profiling block Y seat; the left hinge profiling block and the right hinge profiling block are respectively used for positioning the glued fixed ends of the rotating shaft hinge.

Description

Technical Field

[0001] The present disclosure relates to the field of gluing jigs, and in particular to a multi-section adjustable jig. Background Art

[0002] Laptop cover glued parts currently typically use a one-piece gluing jig. Following 3D product profiling development and design, the glued parts are sequentially placed into the profiling development jig. The jig structure is highly correlated with the product structure, placing high demands on jig manufacturing precision and product dimensional tolerances. Multi-section gluing jigs are also common, where cylinders are used on three sides to increase the bonding strength between the glued parts and the three sides. However, these structures have drawbacks: the gap and step difference between the aluminum parts of the laptop case, the glued plastic parts, and the hinge are difficult to adjust; the gluing stability of the aluminum parts of the laptop case is poor, making uneven gluing prone to occur later; maintenance and disassembly during mass production is inconvenient and costly; compatibility between covers with different logos is incompatible; and the side gluing requires cylinder support, increasing jig costs. Summary of the Invention

[0003] The present disclosure provides a multi-stage adjustable fixture to at least solve one of the technical problems existing in the prior art.

[0004] A multi-stage adjustable jig includes a support plate, an upper profiling block, a left profiling block, a right profiling block, a lower profiling block, a middle profiling block, a positioning Y profiling block, a positioning profiling block Y seat, a left hinge profiling block, and a right hinge profiling block. Guide rail slider mechanisms are respectively provided on the upper side, left side, and right side of the support plate. These guide rail slider mechanisms are respectively connected to the upper profiling block, the left profiling block, and the right profiling block to drive the three profiling blocks toward or away from the center of the support plate.

[0005] The left hinge profiling block and the right hinge profiling block are arranged on both sides of the lower profiling block and the three and the middle profiling block are fixed on the support plate. The positioning profiling block Y seat is arranged on the middle profiling block and fixedly connected to the support plate. The positioning Y profiling block is adapted to be installed on the positioning profiling block Y seat.

[0006] The left hinge profiling block and the right hinge profiling block are respectively used to locate the glued fixed ends of the rotating shaft hinge.

[0007] In one embodiment, the hinge further comprises a hinge auxiliary support block and a hinge stop block, wherein the hinge auxiliary support block and the hinge stop block are provided in two groups, corresponding to the positions of the left hinge profiling block and the right hinge profiling block respectively; the rotating shaft hinge comprises the glued fixed end and the first fixed end;

[0008] The hinge auxiliary support block is fixed on the hinge stop block, the hinge stop block is fixed on the support plate, and the first fixed end of the rotating shaft hinge is detachably connected to the hinge auxiliary support block.

[0009] In one embodiment, the left hinge profiling block and the right hinge profiling block are respectively provided with grooves adapted to the glued fixed ends of the rotating shaft hinge, and a protrusion and a positioning pin are provided on the grooves. The glued fixed ends of the rotating shaft hinge are adapted to the corresponding positions thereof and are provided with a recessed portion and a positioning hole so that the glued fixed ends of the rotating shaft hinge are positioned on the left hinge profiling block and the right hinge profiling block.

[0010] In one embodiment, a waist-shaped positioning hole is provided on the hinge auxiliary support block to enable the hinge auxiliary support block to adjust its position in the Y direction.

[0011] In one embodiment, a groove matching the positioning profiling block Y seat is provided in the middle portion of the middle profiling block, so that the positioning profiling block Y seat is installed in the groove, and a profiling groove matching the positioning Y profiling block is provided on the positioning profiling block Y seat, and the positioning Y profiling block is fixed in the profiling groove and protrudes from the surface of the positioning profiling block Y seat.

[0012] In one embodiment, it also includes a positioning square pin, and the lower side profiling block, the middle profiling block, the positioning profiling block Y seat, the left hinge profiling block and the right hinge profiling block are all positioned on the support plate through the positioning square pin and fixedly connected to the support plate through fixing members.

[0013] In one embodiment, it also includes glued positioning pins, and positioning holes are respectively opened in the upper side profiling block, the left side profiling block, the right side profiling block, the lower side profiling block, the middle profiling block, the left hinge profiling block and the right hinge profiling block, and glued positioning pins are installed in the positioning holes.

[0014] In one embodiment, it also includes a guide column and a base plate, the guide column has a guide part and a fixing part, the guide column fixing part is fixed to the base plate, and guide holes are respectively opened at corresponding positions of the upper side profiling block, the left side profiling block, the right side profiling block and the support plate, and the guide part of the guide column is inserted into the guide hole to guide the profiling blocks on the three sides.

[0015] In one embodiment, the guide holes opened in the upper profiling block, the left profiling block and the right profiling block are arranged obliquely, and the guide parts of the corresponding guide columns are arranged obliquely, and the diameter of the guide holes on the support plate is smaller than the diameter of the fixing part of the guide column.

[0016] In one embodiment, a damping column is further provided between the support plate and the bottom plate to provide damping and positioning between the support plate and the bottom plate.

[0017] In one embodiment, the positioning Y-shaped block and the positioning shaped block Y seat are replaced with positioning L-shaped blocks, and two positioning L-shaped blocks are provided, which are located between the upper shaped block and the middle shaped block and are spaced apart.

[0018] The positioning L-shaped block is positioned on the support plate through a positioning square pin and is fixedly connected to the support plate through a fixing piece; a positioning hole is also provided in the positioning L-shaped block, and a positioning nail is provided in the positioning hole.

[0019] Compared with the existing technology, the advantages of the multi-stage adjustable fixture of the present application are: 1) The multi-stage adjustable fixture of the present application can effectively adjust the gluing gap and step difference of the product; improve the stability of product gluing and reduce the defective rate; 2) The multi-stage adjustable fixture of the present application is easy to disassemble and assemble, greatly reducing the subsequent maintenance cost; breaking the whole into parts, facilitating the gluing and replacement of notebook covers with different logos, and improving the utilization rate of the fixture; 3) The present application removes the cylinder to optimize the pressing structure, ensuring that the gluing surfaces can be fully pressed during the downward pressing process.

[0020] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood by reading the detailed description below with reference to the accompanying drawings, in which several embodiments of the present disclosure are shown by way of example and not limitation, wherein:

[0022] In the drawings, the same or corresponding reference numerals denote the same or corresponding parts.

[0023] Figure 1 A schematic diagram of the overall structure of a multi-stage adjustable fixture according to embodiment 1 of the present disclosure is shown;

[0024] Figure 2 Shown Figure 1 Schematic diagram of the structure after removing the upper cover of the fixture;

[0025] Figure 3 Shown Figure 2 A schematic diagram of a structure in which a multi-stage adjustable fixture is connected to a rotating shaft hinge;

[0026] Figure 4 Shown Figure 3 Disassembly diagram of the

[0027] Figure 5 Shown Figure 4 Schematic diagram from another angle;

[0028] Figure 6 Shown Figure 3 Explosion diagram of

[0029] Figure 7Schematic diagram showing the upper, left, right and lower profile blocks Figure 1 ;

[0030] Figure 8 Schematic diagram showing the upper, left, right and lower profile blocks Figure 2 ;

[0031] Figure 9 A schematic diagram showing the connection between the guide post and the support plate of Example 1 of the present disclosure is shown;

[0032] Figure 10 A schematic structural diagram of the multi-stage adjustable jig of embodiment 2 of the present disclosure after the jig cover is removed is shown;

[0033] Figure 11 Shown Figure 10 Schematic diagram of the structure of a multi-section adjustable fixture connected to a rotating shaft hinge.

[0034] Explanation of the numbers in the figure: 1-upper side profiling block, 2-left side profiling block, 3-right side profiling block, 4-lower side profiling block, 5-left hinge profiling block, 6-right hinge profiling block, 7-hinge auxiliary support block, 8-hinge stopper, 9-positioning L profiling block, 10-positioning pin, 11-positioning profiling block Y seat, 12-positioning Y profiling block, 13-middle profiling block, 14-positioning square pin, 15-gluing positioning pin, 16-support plate, 17-guide column, 18-damping column, 19-bottom plate, 20-rotating shaft hinge, 21-guide rail slider mechanism, 22-first fixed end, 23-groove, 24-raised portion, 25-profiling groove, 26-waist-shaped positioning hole, 27-gluing fixed end, 28-jig cover. DETAILED DESCRIPTION

[0035] To make the purposes, features, and advantages of the present disclosure more apparent and understandable, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present disclosure without creative work shall fall within the scope of protection of the present disclosure.

[0036] Example 1

[0037] The glued parts of a laptop cover generally include the laptop cover, three-frame plastic parts, bottom frame plastic parts, and hinges. Each glued part has high requirements for glued position and flatness. Therefore, based on the components of the laptop cover glued parts, the present invention adopts a multi-segment fixture combination design to achieve the purpose of easy adjustment and easy replacement, greatly improving the stability of the glue and effectively reducing maintenance costs. It reduces the constraints of the dimensional chain, optimizes the structural design, removes traditional cylinder supports, reduces costs, and greatly improves mass production yield. In addition, the multi-segment adjustable fixture of this application is designed with two positioning combination blocks for laptop covers (i.e., laptop shells) with legion and Y logos; matching combination blocks are selected according to different needs to improve the utilization rate of the fixture.

[0038] This embodiment 1 specifically describes the multi-stage adjustable fixture required for preparing a notebook cover with a Y logo. Figure 1-Figure 2 As shown, a multi-stage adjustable jig includes an upper profiling block 1, a left profiling block 2, a right profiling block 3, a lower profiling block 4, a left hinge profiling block 5, a right hinge profiling block 6, a hinge auxiliary support block 7, a hinge stopper 8, a positioning profiling block Y seat 11, a positioning Y profiling block 12, a middle profiling block 13, a positioning square pin 14, a glued positioning pin 15, a support plate 16, a guide column 17, a damping column 18, a base plate 19, and a jig cover 28. The jig is positioned entirely on the support plate 16 to ensure a uniform reference surface for easy pressing.

[0039] like Figure 2-4 As shown, guide rail slider mechanisms 21 are respectively provided on the upper side, left side and right side of the support plate 16, and these guide rail slider mechanisms are respectively connected to the upper side profiling block 1, the left side profiling block 2 and the right side profiling block 3 to drive these three side profiling blocks to move closer to or away from the center of the support plate 16; specifically, the guide rail slider mechanism 21 includes a guide rail and a corresponding slider, on which the upper side profiling block 1, the left side profiling block 2 and the right side profiling block 3 are respectively fixedly connected.

[0040] The lower profiling block 4 is disposed between the left profiling block 2 and the right profiling block 3, and is opposite to the upper profiling block 1. The left hinge profiling block 5 and the right hinge profiling block 6 are disposed on either side of the lower profiling block 4. These three profiling blocks, along with the central profiling block 13, are positioned on the support plate 16 via positioning square pins 14 and fixed to the support plate 16 via screws.

[0041] like Figure 4As shown, the center portion of the central profiling block 13 has a groove that matches the positioning profiling block Y-base 11. The positioning profiling block Y-base 11 is positioned within the groove of the central profiling block 13 and on the support plate 16 via a positioning square pin 14. The positioning profiling block Y-base 11 is also fixed to the central profiling block 13 and the support plate 16 via screws. The positioning profiling block Y-base 11 has a profiling groove 25 that matches the positioning Y-profiling block 12. The positioning Y-profiling block 12 is fixed within this profiling groove 25 and protrudes from the surface of the positioning profiling block Y-base 11. The lower profiling block 4, the left hinge profiling block 5, the right hinge profiling block 6, the positioning profiling block Y-base 11, and the central profiling block 13 are each equipped with at least two positioning square pins 14 to limit the degrees of freedom in the X and Y directions. Screw locking controls the degree of freedom in the Z direction, ensuring more precise installation. If dimensional deviations occur, the positioning square pins 14 can be replaced to re-align the position.

[0042] like Figure 4-8 As shown, since the thickness of each glued part (including the rotating shaft hinge, three-frame plastic parts and lower frame plastic parts) that constitutes the notebook cover glued part is different, in order to ensure that the overall height of the notebook cover glued part finally prepared meets the requirements, grooves are respectively opened on the upper side profiling block 1, the left side profiling block 2, the right side profiling block 3, the lower side profiling block 4, the left hinge profiling block 5, the right hinge profiling block 6 and the middle profiling block 13 to ensure that the overall height meets the requirements. Those skilled in the art can open corresponding grooves according to the thickness of each glued part. And in order to further position each glued part, a number of positioning holes are respectively opened in the grooves of the upper side profiling block 1, the left side profiling block 2, the right side profiling block 3, the lower side profiling block 4, the left hinge profiling block 5, the right hinge (Hinge) profiling block 6 and the middle profiling block 13, and adhesive positioning pins 15 are installed in the positioning holes. From Figure 2, Figure 3 、 Figure 7 and Figure 8 It can be seen that the height of these gluing positioning nails does not exceed the height of the grooves in which they are located, and these gluing positioning nails 15 cannot be higher than the glued plastic parts to affect the gluing.

[0043] Among them, such as Figure 4-Figure 6 As shown, two sets of hinge auxiliary support blocks 7 and hinge stop blocks 8 are provided, corresponding to the positions of the left hinge shaped block 5 and the right hinge shaped block 6, respectively. The pivot hinge 20 has a glued fixed end 27 and a first fixed end 22. The hinge auxiliary support block 7 is screwed to the hinge stop block 8, which is also screwed to the support plate 16. The first fixed end 22 of the pivot hinge 20 is detachably connected to the hinge auxiliary support block 7. A waist-shaped positioning hole 26 is defined in the hinge auxiliary support block 7, and a positioning pin is installed in the waist-shaped positioning hole 26 to facilitate adjustment of the hinge auxiliary support block 7 in the Y direction.

[0044] like Figure 3-6As shown, in order to position the pivot hinge 20 on the left hinge profiling block 5 and the right hinge profiling block 6, the left hinge profiling block 5 and the right hinge profiling block 6 are each provided with a groove 23 adapted to the glued fixed end of the pivot hinge. The glued fixed end of the pivot hinge 20 is placed in the groove 23 to ensure the height of the glued surface of the pivot hinge. The groove 23 is provided with a protrusion 24 and a glue positioning pin 15. The glued fixed end 27 of the pivot hinge is provided with a recessed portion and a positioning hole adapted to the corresponding position thereof, so that the glued fixed end of the pivot hinge is positioned on the left hinge profiling block 5 and the right hinge profiling block 6. For applications where high precision is required for gluing the hinge, the need for jig freedom limits is also increased. This application not only adds gluing positioning pins 15 to the left hinge profiling block 5 and the right hinge profiling block 6, but also adds raised portions to the left hinge profiling block 5 and the right hinge profiling block 6, making the hinge positioning in the X and Y directions more precise. At the same time, an auxiliary hinge support block 7 is used in the Z direction to prevent one side of the hinge from tilting. Furthermore, the structure of the auxiliary hinge support block 7 is custom designed based on the custom standard for the initial shipping angle of the hinge, such as Figure 6 As shown, the hinge auxiliary support block 7 is designed into an L-shaped structure, and a waist-shaped positioning hole 26 is opened on the hinge auxiliary support block 7. The reason for designing the positioning hole into a waist shape is to facilitate Y-axis adjustment and better control of the angle. In addition, the fixture will also wear and tear during long-term use, especially at the position of the shaft hinge. The wear cycle of the profiling block is greatly reduced. The multi-stage adjustable fixture of this application is broken down into parts. The left hinge profiling block 5 and the right hinge profiling block 6 are designed to be small, independent and easy to disassemble. When flatness wear and tear occurs, the original profiling block can be directly replaced, greatly improving work efficiency and yield rate.

[0045] like Figure 5 、 Figure 6 and Figure 9 As shown, in order to guide and position the upper profiling block 1, the left profiling block 2, and the right profiling block 3, a guide column 17 is provided on the base plate 19. The guide column 17 has a guiding portion and a fixing portion. The fixing portion of the guide column 17 is fixed to the base plate 19 by screws. Guide holes are respectively provided at corresponding positions of the upper profiling block 1, the left profiling block 2, the right profiling block 3 and the support plate 16. The guide holes provided in the upper profiling block 1, the left profiling block 2, and the right profiling block 3 are obliquely arranged, and the corresponding guide portions of the guide columns 17 are obliquely inclined. The diameter of the guide holes on the support plate 16 is smaller than the diameter of the fixing portion of the guide columns.

[0046] For the upper profiling block 1, the left profiling block 2, and the right profiling block 3, in previous fixture designs, the three frames and the side of the upper cover are generally pressed together by cylinder support. The multi-stage adjustable fixture of the present application designs the guide positioning holes (i.e., guide holes) of the upper profiling block 1, the left profiling block 2, and the right profiling block 3 to be inclined outward at a certain angle. Each profiling block is designed with two guide positioning holes, which are guided and positioned by the guide column 17. The support plate 16 has a hole at each guide position, and the diameter is smaller than the diameter of the lower end of the guide column 17; the lower end of the guide column 17 is designed as a step to have a limiting protection function.

[0047] like Figure 5 、 Figure 9 As shown, a damping column 18 is provided between the support plate 16 and the bottom plate 19. The damping column 18 is a spring column that provides damping and limiting between the support plate 16 and the bottom plate 19. The upper end of the damping column 18 is fixedly connected to the lower end of the support plate 16 by screws, and the lower end of the damping column 18 is fixedly connected to the bottom plate 19 by screws. A certain number of damping columns 18 are installed between the support plate 16 and the bottom plate 19 for support. During the pressing process, due to the oblique design of the guide holes of the upper profiling block 1, the left profiling block 2, and the right profiling block 3, the upper profiling block 1, the left profiling block 2, and the right profiling block 3 are subjected to a certain component of force on the side glued surfaces of the upper profiling block 1, the left profiling block 2, and the right profiling block 3 with the notebook cover. This ensures that the upper profiling block 1, the left profiling block 2, and the right profiling block 3 and the bottom and side glued surfaces of the three plastic frames of the notebook cover can all withstand force during the pressing process.

[0048] The working process of the multi-stage adjustable jig of the present application is as follows: the three-side plastic parts, the lower side plastic parts, and the rotating shaft hinge are placed on the corresponding profiling blocks in turn, and then the notebook cover is placed, and then the jig cover is closed on the notebook cover. The jig cover is pressed down and glued by air pressure, and the support plate is pressed down together with the jig cover. The damping column on the bottom plate plays the role of supporting the support plate on the one hand, and on the other hand, it damps and limits the support plate, and at the same time, the guide column on the bottom plate positions the profiling block. After gluing is completed, the notebook cover glued parts are taken out.

[0049] Example 2

[0050] like Figure 10-11As shown, the multi-stage adjustable fixture of Example 2 is designed for laptop lids with legions. The structure of Example 2 is generally the same as that of Example 1, except that the positioning Y-shaped block 12 and positioning Y-shaped block seat 11 of Example 1 are replaced with two positioning L-shaped blocks 9, spaced apart and located between the upper and middle shaped blocks 1 and 13. The L-shaped blocks 9 are positioned on the support plate 16 using positioning square pins 14 and are fixed to the support plate 16 using screws. The L-shaped blocks 9 also have positioning holes in them, into which positioning pins 10 are installed to position the glued parts.

[0051] It should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the present disclosure, "plurality" means two or more, unless otherwise specifically defined.

[0052] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "middle", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0053] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A multi-stage adjustable fixture, characterized by: The invention comprises a support plate (16), an upper profiling block (1), a left profiling block (2), a right profiling block (3), a lower profiling block (4), a middle profiling block (13), a positioning Y profiling block (12), a positioning profiling block Y seat (11), a left hinge profiling block (5) and a right hinge profiling block (6), wherein the upper side, the left side and the right side of the support plate (16) are respectively provided with guide rail slider mechanisms, and these guide rail slider mechanisms are respectively connected to the upper profiling block, the left profiling block and the right profiling block to drive the three side profiling blocks to move toward or away from the center of the support plate; The left hinge profiling block (5) and the right hinge profiling block (6) are arranged on both sides of the lower profiling block (4) and the three and the middle profiling block (13) are fixed on the support plate (16), the positioning profiling block Y seat (11) is arranged on the middle profiling block (13) and fixedly connected to the support plate (16), and the positioning Y profiling block (12) is adapted to be mounted on the positioning profiling block Y seat (11); The left hinge profiling block (5) and the right hinge profiling block (6) are respectively used to position the glued fixed ends of the rotating shaft hinge (20); The multi-stage adjustable fixture further comprises a hinge auxiliary support block (7) and a hinge stop block (8), wherein the hinge auxiliary support block (7) and the hinge stop block (8) are provided in two groups, corresponding to the positions of the left hinge profiling block and the right hinge profiling block respectively; the rotating shaft hinge (20) comprises the glued fixed end and the first fixed end; The hinge auxiliary support block (7) is fixed on the hinge stop block (8), the hinge stop block (8) is fixed on the support plate (16), and the first fixed end of the rotating shaft hinge (20) is detachably connected to the hinge auxiliary support block (7); The left hinge profiling block (5) and the right hinge profiling block (6) are respectively provided with grooves adapted to the glued fixed end of the rotating shaft hinge (20), and a protrusion and a positioning pin are provided on the grooves. The glued fixed end of the rotating shaft hinge (20) is adapted to the corresponding position thereof and provided with a recessed portion and a positioning hole, so that the glued fixed end of the rotating shaft hinge is positioned on the left hinge profiling block (5) and the right hinge profiling block (6); A waist-shaped positioning hole is provided on the hinge auxiliary support block (7) so that the position of the hinge auxiliary support block (7) can be adjusted in the Y direction; The multi-stage adjustable fixture further comprises a guide column (17) and a base plate (19), wherein the guide column (17) comprises a guide portion and a fixed portion, wherein the fixed portion of the guide column (17) is fixed to the base plate (19), and guide holes are respectively provided at corresponding positions of the upper profiling block (1), the left profiling block (2), the right profiling block (3) and the support plate (16), and the guide portion of the guide column is inserted into the guide hole to guide the profiling blocks on the three sides; The guide holes provided in the upper profiling block (1), the left profiling block (2) and the right profiling block (3) are arranged obliquely, and the guide portions of the corresponding guide posts are arranged obliquely and tilted, and the diameter of the guide holes on the support plate is smaller than the diameter of the fixing portion of the guide post; A damping column (18) is further provided between the support plate (16) and the bottom plate (19) to provide damping and limiting between the support plate (16) and the bottom plate (19).

2. The multi-stage adjustable fixture according to claim 1, characterized in that: The middle portion of the middle profiling block (13) is provided with a groove matching the positioning profiling block Y seat (11), so that the positioning profiling block Y seat (11) is installed in the groove, and the positioning profiling block Y seat (11) is provided with a profiling groove matching the positioning Y profiling block (12), and the positioning Y profiling block (12) is fixed in the profiling groove and protrudes from the surface of the positioning profiling block Y seat (11).

3. The multi-stage adjustable fixture according to claim 1, characterized in that: It also includes a positioning square pin (14), the lower side profiling block (4), the middle profiling block (13), the positioning profiling block Y seat (11), the left hinge profiling block (5) and the right hinge profiling block (6) are all positioned on the support plate (16) through the positioning square pin (14) and fixedly connected to the support plate (16) through a fixing member.

4. The multi-stage adjustable fixture according to claim 1, characterized in that: The invention also includes a glued positioning pin (15), and positioning holes are respectively opened in the upper side profiling block (1), the left side profiling block (2), the right side profiling block (3), the lower side profiling block (4), the middle profiling block (13), the left side hinge profiling block (5) and the right side hinge profiling block (6), and the glued positioning pin (15) is installed in the positioning hole.

5. A multi-stage adjustable fixture according to any one of claims 1 to 4, characterized in that: The positioning Y profiling block (12) and the positioning profiling block Y seat (11) are replaced with the positioning L profiling block (9), wherein two positioning L profiling blocks (9) are provided, and are located between the upper profiling block (1) and the middle profiling block (13) and are spaced apart from each other; The positioning L-shaped block (9) is positioned on the support plate (16) through the positioning square pin (14) and is fixedly connected to the support plate (16) through the fixing member; A positioning hole is also provided in the positioning L-shaped profiling block (9), and a positioning pin (10) is provided in the positioning hole.

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