Glass cutting positioning device

Abstract

The utility model relates to the technical field of glass cutting positioning, in particular to a glass cutting positioning device. The device comprises a supporting table, the supporting table comprises a supporting frame and a supporting plate arranged on the supporting frame, and a plurality of through grooves are formed in the supporting plate; the lifting plate is arranged below the supporting plate in a lifting moving mode, a plurality of lifting protrusions which are in sliding coupling with the through grooves are arranged on the lifting plate, protruding balls are rotationally arranged at the tops of the lifting protrusions, and the balls are higher than the top face of the supporting plate after the lifting plate is lifted; the lifting mechanism is arranged on the supporting frame, connected with the lifting table and used for driving the lifting plate to ascend and descend. The lifting mechanism drives the lifting table to ascend and descend, the lifting protrusions ascend and descend in a unified mode, glass is jacked up through the multiple balls under the uniform pressure to adjust the direction, use is convenient, the structure is simple, and great popularization value is achieved.

Description

Technical Field

[0001] This utility model relates to the field of glass cutting and positioning technology, specifically to a glass cutting and positioning device. Background Technology

[0002] Currently, existing glass cutting positioning tools present challenges during glass cutting. When large pieces of glass are placed on the worktable, their weight and large area make it difficult to adjust their position later. If the glass position is off, the cutting line may not align with the preset marks, resulting in dimensional errors. This requires multiple people to work together to adjust, which is time-consuming and labor-intensive. Furthermore, frequent movement of the glass increases the risk of breakage.

[0003] Patent publication number "CN217618700U" discloses a glass processing fixture with convenient angle adjustment. The fixture features a placement plate with multiple grooves containing multiple telescopic columns, each topped with a ball bearing. The glass is moved by extending the telescopic columns. However, the structure of the telescopic columns and a method for uniformly controlling them are not disclosed. The varying degrees of extension and contraction among the multiple columns result in inconsistent extension lengths, causing variations in the pressure exerted by the ball bearings on the glass. In particular, excessive extension of any one column can easily lead to glass breakage. Summary of the Invention

[0004] The main purpose of this invention is to address the shortcomings of the aforementioned background technology and provide a glass cutting positioning device that facilitates the positioning and adjustment of glass.

[0005] The technical solution adopted in this utility model is: a glass cutting and positioning device, which includes:

[0006] A support platform, the support platform including a support frame and a support plate disposed on the support frame, the support plate being provided with multiple through slots;

[0007] A lifting plate is provided below the support plate and can be raised and lowered. The lifting plate is provided with multiple lifting protrusions that are slidably coupled to the through groove. The top of the lifting protrusions is provided with protruding balls that rotate. After the lifting plate is raised, the balls are higher than the top surface of the support plate.

[0008] A lifting mechanism is provided, which is mounted on a support frame and connected to a lifting platform, and is used to drive the lifting plate to move up and down.

[0009] Furthermore, the lifting mechanism includes a lead screw, a movable seat, and a diagonal brace that is rotatably connected to the support frame and hinged to the movable seat and the lifting plate at both ends, respectively; the two diagonal braces are symmetrically distributed and their rotation axes are parallel; the lead screw is provided with two reverse threads, and the two movable seats are respectively threaded to the two threads of the lead screw, and move synchronously towards or away from each other when the lead screw rotates.

[0010] Furthermore, the lifting mechanism also includes a drive device, the output end of which is fixedly connected to one end of a lead screw, for driving the lead screw to rotate.

[0011] Furthermore, the driving device includes a motor, which is mounted on a support frame and its output end is fixedly connected to one end of a lead screw.

[0012] Furthermore, it also includes a guiding mechanism, which is mounted on the support frame and connected to the lifting plate, for limiting non-vertical movement of the lifting plate.

[0013] Furthermore, the guiding mechanism includes a plurality of vertical guide rods fixedly connected to the lifting plate; the support frame is provided with positioning holes corresponding to the guide rods, and the guide rods are slidably disposed vertically within the positioning holes.

[0014] Furthermore, the support frame includes multiple columns and multiple connecting plates connecting adjacent columns; the connecting plates are provided with positioning holes corresponding to the guide rods.

[0015] Furthermore, the through groove is a strip-shaped groove, and multiple strip-shaped grooves are arranged in parallel and spaced apart on the support plate; the lifting protrusion is a strip-shaped structure coupled with the strip-shaped groove, and the top surface of the lifting protrusion is provided with multiple arc-shaped grooves spaced apart along the strip direction, and the protruding ball is rotatably provided in the arc-shaped groove.

[0016] Furthermore, the multiple through slots are distributed in a star-like pattern, and the multiple lifting protrusions are distributed in a star-like pattern coupling the through slots. Each lifting protrusion is provided with a ball bearing at its top.

[0017] Furthermore, the lifting protrusion is provided with a limiting cover, which has multiple limiting holes with a diameter smaller than that of the ball, and the ball protrudes out of the limiting cover through the limiting holes.

[0018] Furthermore, it also includes a pressing mechanism for pressing and fixing the glass; the pressing mechanism includes a mounting shaft rotatably disposed on the periphery of the lifting plate or on the support platform, a pressing swing member disposed on the mounting shaft, and a driving member that is pulsatorically connected to the mounting shaft. The driving member is used to drive the mounting shaft to rotate, thereby causing the pressing swing member to rotate and press and fix the glass.

[0019] Furthermore, the driving component includes a telescopic rod, with a support frame and a transmission lever hinged to both ends of the telescopic rod, and a shaft fixedly mounted to the other end of the transmission lever.

[0020] Furthermore, multiple pressing elements are slidably spaced on the mounting shaft, and the pressing elements are fitted with a limiting surface that restricts the rotation of the pressing elements; the pressing elements are provided with threaded holes, and bolts that abut against the mounting shaft are used to fix the pressing elements in the threaded holes.

[0021] Furthermore, the mounting shaft has a rectangular mounting section, the pressing swing piece has an L-shaped structure and a rectangular hole for coupling the mounting section at one end, and the pressing swing piece has a threaded hole that vertically connects to the rectangular hole.

[0022] Furthermore, the support plate is equipped with anti-slip pads.

[0023] The beneficial effects of this utility model include: 1. The support platform can hold the glass to be cut. Multiple through slots on the support plate allow the lifting protrusions on the lifting plate to slide through. The ball bearings are located on the top surface of the lifting protrusions. When the lifting mechanism moves the lifting plate, the multiple ball bearings move up and down with the lifting plate, exhibiting consistency. After the lifting plate rises, the multiple ball bearings protrude from the top surface of the support plate and can lift the glass. The pressure of the multiple ball bearings on the glass is uniform, making it less prone to breakage. It is easy to move the glass position and can be applied to larger glass sizes. It is convenient to use.

[0024] 2. The lifting mechanism of this utility model has a simple structure. When the lead screw rotates, the two moving seats move synchronously towards each other or away from each other through two sections of reverse threads. The horizontal movement of the moving seats is converted into the vertical lifting motion of the lifting plate through symmetrical diagonal bracing. It is easy to use.

[0025] 3. The drive device facilitates the rotation of the lead screw, and the lifting plate can be easily adjusted by controlling the drive device;

[0026] 4. The lifting plate is guided to move up and down through a guide mechanism, which restricts non-vertical movement of the lifting plate and prevents it from tilting after moving up and down.

[0027] 5. The guide mechanism has a simple structure, with multiple vertical guide rods slidingly connected to the positioning holes of the support frame to ensure the vertical lifting movement of the lifting plate;

[0028] 6. The through groove is a strip groove, which is spaced out on the support plate. The raised protrusion is coupled to the strip groove and is equipped with multiple balls, which facilitates manufacturing.

[0029] 7. The limiting hole diameter of the limiting cover is smaller than the diameter of the ball. When the cover is placed on the ball, the ball protrudes from the top surface of the limiting cover and is restricted to the raised protrusion to prevent the ball from slipping off.

[0030] 8. The pressing mechanism can press and fix the glass after the glass position is adjusted, in conjunction with the lifting plate. The driving component drives the mounting shaft to rotate, thereby driving the pressing swing piece to rotate, so that the pressing swing piece presses down on the glass to fix it.

[0031] 9. The structure of the drive component connecting the mounting shaft is very simple. The telescopic rod is connected by hinges at both ends. When it extends or retracts, it drives the transmission swing arm to rotate around the mounting shaft, thereby driving the mounting shaft to rotate.

[0032] 10. Multiple pressing components are slidably mounted on the mounting shaft at intervals, making it easy to adjust the spacing and make the pressing force more uniform, adapting to glass of different sizes; the relative rotation between the pressing components and the mounting shaft can be restricted by the limiting surface; the pressing components can be fixed by bolting the mounting components to abut against the mounting shaft, making installation simple.

[0033] The glass cutting and positioning device of this utility model is suitable for adjusting the orientation of large glass after lifting. The lifting plate is moved up and down by the lifting mechanism, so that multiple lifting protrusions on the lifting plate are raised and lowered in a unified manner. The lifting protrusions slide up and down in the through groove, so that the ball bearings protrude from the top surface of the support plate. The glass is lifted with uniform pressure, which makes it easy to adjust the orientation of the glass, is not easy to break, and is convenient to use. It has great promotional value. Attached Figure Description

[0034] Figure 1 : A three-dimensional structural diagram of this glass cutting and positioning device;

[0035] Figure 2 Another three-dimensional structural diagram of this glass cutting and positioning device;

[0036] Figure 3 : A schematic diagram of the lifting mechanism connected to the support frame;

[0037] Figure 4 : A schematic diagram of the structure of the lifting plate connecting the lifting mechanism;

[0038] Figure 5 : A schematic diagram of the pressing mechanism;

[0039] The components include: 1. Support plate; 2. Anti-slip mat; 3. Support frame; 4. Through groove; 5. Lead screw; 6. Drive device; 7. Moving seat; 8. Diagonal brace; 9. Connecting plate; 10. Guide rod; 11. First hinge seat; 12. Lifting plate; 13. Ball bearing; 14. Limiting cover; 15. Second hinge seat; 16. Mounting shaft; 17. Pressing swing piece; 18. Anti-slip layer; 19. Bolt; 20. Transmission lever; 21. Rotating seat; 22. Telescopic rod. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary. The drawings are not drawn to scale and are intended to explain this utility model, and should not be construed as limiting this utility model.

[0041] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] Furthermore, 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 one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0044] This utility model relates to a glass cutting and positioning device, which is suitable for adjusting the position after lifting large glass. The lifting plate 12 is moved up and down by a lifting mechanism, so that multiple lifting protrusions on the lifting plate 12 are raised and lowered in a unified manner. The lifting protrusions slide up and down in the through groove 4, so that the ball bearing 13 protrudes from the top surface of the support plate 1. The ball bearing 13 lifts the glass and applies uniform pressure to the glass, making it less prone to breakage. Workers can easily push the glass to make fine adjustments to its position, solving the problem of moving large glass. It is convenient to use and has great promotional value.

[0045] A glass cutting and positioning device, specifically, such as Figure 1-5 As shown, the system includes a support platform, a lifting plate 12, and a lifting mechanism. The support platform includes a support frame 3 and a support plate 1 located on top of the support frame 3. The support plate 1 has multiple through slots 4. The lifting plate 12 is movable and height-adjustable below the support plate 1. The lifting plate 12 has multiple lifting protrusions with sliding coupling through slots 4. The top of each lifting protrusion has a protruding ball bearing 13 that rotates and is higher than the top surface of the support plate 1 after the lifting plate 12 is raised. The lifting mechanism is located on the support frame 3 and connected to the lifting platform, used to drive the lifting plate 12 to move up and down. Preferably, the support plate 1 has an anti-slip pad 2. The multiple lifting protrusions with ball bearings 13 are uniformly installed on the lifting plate 12 and rise and fall together with the lifting plate 12. The lifting height is consistent, resulting in more even pressure on the glass when lifting it, making the glass less prone to breakage.

[0046] In one embodiment, the lifting mechanism is described, such as... Figure 3-4As shown, the lifting mechanism includes a lead screw 5, a movable seat 7, and a diagonal brace 8. The two ends of the lead screw 5 are rotatably connected to a support frame 3, located within the support frame 3. The support frame 3 is rotatably connected to the lead screw 5 via bearings and serves to support the lead screw 5. The lead screw 5 has two opposing threads, and two movable seats 7 are threadedly connected to the two threads of the lead screw 5 respectively, moving synchronously towards or away from each other when the lead screw 5 rotates. The two ends of the diagonal brace 8 are hinged to the movable seat 7 and the lifting plate 12 respectively. The two diagonal braces 8 are symmetrically distributed, and their rotation axes (hinges) are parallel. When the lead screw 5 rotates, the movable seat 7 is constrained by the diagonal brace 8 and rotates relative to the lead screw 5, thereby achieving axial movement along the lead screw 5. After the movable seat 7 moves, it changes the inclination angle of the diagonal brace 8, thereby raising or lowering the lifting plate 12, facilitating vertical movement of the lifting plate 12.

[0047] Multiple lifting mechanisms can be used to lift the lifting plate 12 together, which can improve the stability of the lifting plate 12 during lifting and prevent the lifting plate 12 from tilting during lifting.

[0048] Preferably, such as Figure 3 As shown, a first hinge seat 11 is fixed at the bottom of the lifting plate 12, and the diagonal brace 8 is hinged to the lifting plate 12 through the first hinge seat 11.

[0049] The lifting mechanism includes a lead screw 5, a movable seat 7, and a diagonal brace 8, such as Figure 2-3 As shown, the lifting mechanism also includes a drive device 6. The output end of the drive device 6 is fixedly connected to one end of the lead screw 5, which is used to drive the lead screw 5 to rotate, facilitating quick adjustment of the rotation of the lead screw 5. In use, a motor is preferably used as the drive device 6, and the motor is mounted on the support frame 3 with its output end fixedly connected to one end of the lead screw 5.

[0050] In a preferred embodiment, such as Figure 4 As shown, the glass cutting positioning device also includes a guide mechanism, which is mounted on the support frame 3 and connected to the lifting plate 12. The guide mechanism restricts the non-vertical movement of the lifting plate 12. The guide mechanism guides the lifting plate 12 in its vertical movement, restricts its non-vertical movement, and prevents it from tilting after vertical movement. The structure is simple and eliminates the need for multiple lifting mechanisms to provide stability.

[0051] The glass cutting positioning device also includes a guiding mechanism, such as... Figure 4 As shown, the guiding mechanism includes multiple vertical guide rods 10 fixed to the lifting plate 12; the support frame 3 has positioning holes corresponding to the guide rods 10, and the guide rods 10 are vertically slidably disposed in the positioning holes. In use, four guide rods 10 can be fixed at the corners of the rectangular lifting plate 12 to prevent the lifting plate 12 from tilting when it moves up and down.

[0052] In one alternative, the support frame 3 includes multiple columns and a connecting plate 9 connecting the columns, with the support plate 1 fixedly connected to the top of the columns; the connecting plate 9 is provided with the above-mentioned positioning holes corresponding to the guide rod 10.

[0053] Reinforcing plates can be added between the columns, and the drive device 6 can be fixed to the reinforcing plate.

[0054] In some embodiments, multiple through slots 4 are distributed in a star-like pattern, and multiple lifting protrusions are distributed in a star-like pattern coupling through slots 4. Each lifting protrusion is provided with a ball bearing 13 at its top.

[0055] In some preferred embodiments, such as Figure 1 and Figure 4 As shown, the through groove 4 is a strip-shaped groove, with multiple strip-shaped grooves arranged in parallel and spaced intervals on the support plate 1; the lifting protrusion is a strip-shaped structure that couples the strip-shaped grooves, and the top surface of the lifting protrusion has multiple arc-shaped grooves spaced along the strip direction, with protruding ball bearings 13 rotatably arranged in the arc-shaped grooves. The through groove 4 is a strip-shaped groove, spaced apart on the support plate 1, and the lifting protrusion corresponds to and couples the strip-shaped groove and is provided with multiple ball bearings 13. The strip-shaped groove can reduce the number of slots and facilitate manufacturing.

[0056] In a preferred embodiment, such as Figure 4 As shown, a limiting cover 14 is provided on the lifting protrusion corresponding to the ball 13. The limiting cover 14 has multiple limiting holes with a diameter smaller than that of the ball 13. The ball 13 protrudes from the limiting cover 14 through the limiting holes. The limiting cover 14 is detachably fixed on the lifting protrusion. When it is placed on the ball 13, the ball 13 protrudes from the top surface of the limiting cover 14 and is restricted to the lifting protrusion to prevent the ball 13 from slipping off.

[0057] In one embodiment, the glass cutting and positioning device further includes a pressing mechanism, which is used to press and fix the glass in conjunction with the lifting plate 12 or the support plate 1. When in conjunction with the lifting plate 12, after the multiple rollers 13 lift the glass, the pressing mechanism presses the glass onto the multiple rollers 13 for fixation; when in conjunction with the support plate 1, after the rollers 13 lift the glass to adjust its position, the glass is lowered and falls onto the support plate 1, and then the pressing mechanism presses and fixes the glass onto the support plate 1.

[0058] like Figure 5 As shown, the pressing mechanism includes a mounting shaft 16 rotatably mounted on the side of the lifting plate 12 or on a support platform, a pressing swing member 17 mounted on the mounting shaft 16, and a driving member that is pulsatorically connected to the mounting shaft 16. The driving member drives the mounting shaft 16 to rotate, thereby causing the pressing swing member 17 to rotate and press the fixed glass. The mounting shaft 16 can be rotatably connected to the side of the lifting plate 12 or on the support platform via a second hinge seat 15.

[0059] Preferably, such as Figure 5As shown, the driving component includes a telescopic rod 22, which is preferably an electric push rod. The support frame 3 and one end of the transmission lever 20 are respectively hinged to both ends of the telescopic rod 22. The other end of the transmission lever 20 is fixed to the mounting shaft 16. The two ends of the telescopic rod 22 and the other end of the transmission lever 20 form a triangular structure. When the telescopic rod 22 extends, it drives the transmission lever 20 to rotate around the mounting shaft 16. This rotation of the mounting shaft 16 then causes the pressing element 17 to rotate around the mounting shaft 16, pressing down on the glass for fixation.

[0060] Based on the pressing mechanism including pressing element 17, such as Figure 5 As shown, multiple slidable, spaced-apart push-button components 17 are mounted on the mounting shaft 16. Each push-button component 17 has a limiting surface that restricts its rotation. Each push-button component 17 has a threaded hole, with a bolt 19 threaded into the hole to abut against the mounting shaft 16 and fix the push-button component 17. One side of each push-button component 17 may have an anti-slip layer 18 for contact with the glass. The multiple push-button components 17 are slidably mounted on the mounting shaft 16 at intervals, facilitating spacing adjustment and ensuring more uniform pressing force, adapting to different glass sizes. The limiting surface restricts relative rotation between the push-button components 17 and the mounting shaft 16. The push-button components 17 are fixed by bolting the push-button components against the mounting shaft 16, simplifying installation.

[0061] In a certain preferred solution, such as Figure 5 As shown, the mounting shaft 16 has a rectangular mounting section, the pressing swing member 17 has an L-shaped structure and a rectangular hole for coupling the mounting section at one end, and a threaded hole for vertically connecting the rectangular hole on the pressing swing member 17.

[0062] In actual use, one end of the lead screw 5 is rotatably mounted on the support frame 3, and the other end is fixedly connected to the motor output end mounted on the support frame 3. Two movable seats 7 are screwed onto the two reverse threaded sections of the lead screw 5. Two diagonal braces 8 are hinged to the movable seats 7 and the lifting plate 12 in a figure-eight shape (or an inverted figure-eight shape). One end of the electric push rod is hinged to the support frame 3 through the rotating seat 21, and the other end is hinged to the transmission lever 20. The end of the transmission lever 20 away from the electric push rod is fixedly connected to the mounting shaft 16. The mounting shaft 16 includes a rectangular mounting section, with the rectangular side serving as a limiting surface. Multiple L-shaped pressing ornaments 17 are spaced along the axial direction on the rectangular mounting section. The pressing ornaments 17 are fixed to the mounting shaft 16 by bolts 19. After the pressing ornaments 17 rotate, they press and fix the glass onto multiple ball bearings 13 after it is raised.

[0063] Working principle: After the glass is placed on the support plate 1, the motor rotates to drive the lead screw 5 to rotate. The two moving seats 7 move synchronously towards or away from each other, and the lifting plate 12 is raised by the inclined support 8. The lifting protrusion of the lifting plate 12 moves upward, passes through the through groove 4, and lifts the glass through multiple balls 13, so that the glass is suspended on the multiple balls 13. After adjusting the glass position, the telescopic rod 22 extends, causing the transmission lever 20 to rotate around the mounting shaft 16. The mounting shaft 16 rotates, driving the pressing swing piece 17 to rotate until it abuts against the glass, pressing and fixing the glass on the multiple balls 13. Then, the cutting is performed. After the cutting operation is completed, the telescopic rod 22 retracts, and the motor rotates in the opposite direction to move the lifting plate 12 downward, so that the glass is on the support plate 1.

[0064] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A glass cutting and positioning device, characterized in that: include, The support platform includes a support frame (3) and a support plate (1) disposed on the support frame (3), and the support plate (1) is provided with a plurality of through slots (4); Lifting plate (12), which is movable and adjustable below support plate (1), has multiple lifting protrusions that slide and couple the through groove (4) on the lifting plate (12), and a protruding ball (13) is rotatably provided on the top of the lifting protrusion. The ball (13) is higher than the top surface of support plate (1) after the lifting plate (12) is lifted. The lifting mechanism is mounted on the support frame (3) and connected to the lifting platform, and is used to drive the lifting plate (12) to move up and down.

2. The glass cutting and positioning device as described in claim 1, characterized in that: The lifting mechanism includes a lead screw (5) rotatably connected in the support frame (3), a movable seat (7), and a diagonal brace (8) with the movable seat (7) and the lifting plate (12) respectively hinged at both ends; the two diagonal braces (8) are symmetrically distributed and their rotation axes are parallel; the lead screw (5) is provided with two reverse threads, and the two movable seats (7) are respectively threaded to the two threads of the lead screw (5), and move synchronously towards or away from each other when the lead screw (5) rotates.

3. The glass cutting and positioning device as described in claim 2, characterized in that: The lifting mechanism also includes a drive device (6), the output end of which is fixed to one end of a lead screw (5) for driving the lead screw (5) to rotate.

4. The glass cutting and positioning device as described in claim 2, characterized in that: It also includes a guide mechanism, which is mounted on the support frame (3) and connected to the lifting plate (12) to restrict the non-vertical movement of the lifting plate (12).

5. The glass cutting and positioning device as described in claim 4, characterized in that: The guiding mechanism includes a plurality of vertical guide rods (10) fixedly connected to the lifting plate (12); the support frame (3) is provided with positioning holes corresponding to the guide rods (10), and the guide rods (10) are vertically slidably disposed in the positioning holes.

6. A glass cutting and positioning device as described in any one of claims 1-5, characterized in that: The through groove (4) is a strip groove, and multiple strip grooves are arranged in parallel and spaced on the support plate (1); the lifting protrusion is a strip structure coupled with the strip groove, and multiple arc-shaped grooves are provided at intervals along the strip direction on the top surface of the lifting protrusion, and the protruding ball (13) is rotatably provided in the arc-shaped groove.

7. A glass cutting and positioning device as described in claim 6, characterized in that: The lifting protrusion is provided with a limiting cover (14), and the limiting cover (14) is provided with multiple limiting holes with a diameter smaller than that of the ball (13). The ball (13) protrudes out of the limiting cover (14) through the limiting holes.

8. The glass cutting and positioning device as described in claim 1, characterized in that: It also includes a pressing mechanism for pressing and fixing the glass; the pressing mechanism includes a mounting shaft (16) rotatably disposed on the periphery of the lifting plate (12) or on the support platform, a pressing swing piece (17) disposed on the mounting shaft (16), and a driving member that is connected to the mounting shaft (16) for transmission. The driving member is used to drive the mounting shaft (16) to rotate, thereby driving the pressing swing piece (17) to rotate and pressing and fixing the glass.

9. A glass cutting and positioning device as described in claim 8, characterized in that: The driving component includes a telescopic rod (22), with a support frame (3) and a transmission lever (20) hinged at both ends of the telescopic rod (22), and a shaft (16) fixedly connected to the other end of the transmission lever (20).

10. A glass cutting and positioning device as described in claim 8, characterized in that: Multiple pressing elements (17) are slidably spaced on the mounting shaft (16). The pressing elements (17) and the mounting shaft (16) are provided with a limiting surface to restrict the rotation of the pressing elements (17). The pressing elements (17) are provided with threaded holes, and bolts (19) that abut against the mounting shaft (16) to fix the pressing elements (17) are threadedly connected in the threaded holes.

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