Fixing structure and glass cutting device

Abstract

The utility model provides a fixing structure and a glass cutting device.The fixing structure comprises an operation platform, and the operation platform is provided with a supporting face used for supporting glass; the pair of first connecting arms are oppositely arranged on the supporting face in the first direction, and at least one first connecting arm is in sliding connection with the operation platform in the first direction. The pair of second connecting arms are oppositely arranged between the pair of first connecting arms in the second direction, and at least one second connecting arm is slidably connected to the pair of first connecting arms in the second direction; the pressing devices are provided with pressing parts arranged towards the supporting face and used for pressing glass, and the first connecting arm and the second connecting arm are connected with one or more of the pressing parts correspondingly; wherein the second direction and the first direction meet a vertical condition. According to the technical scheme, the pressing part can be adjusted in the first direction and the second direction, so that glass can be fixed according to different cutting size requirements.

Description

Technical Field

[0001] The present disclosure relates to the technical field of glass processing, and in particular to a fixing structure and a glass cutting device. Background Art

[0002] OLED (Organic Light-Emitting Diode) glass carrier, also known as OLED substrate or base plate, is one of the key components in the manufacturing process of OLED displays, so the physical and chemical properties of OLED glass carriers are very important. OLED glass carriers are often large in size during the production process. If they are tested directly, they may exceed the effective detection range of the testing equipment. Therefore, they need to be cut to reduce the size to ensure the effectiveness of the test.

[0003] In the prior art, glass cutting is performed by using a glass cutting device. Before cutting the glass, the glass cutting device needs to be fixed to avoid displacement of the glass during the cutting process and affecting the cutting accuracy. The existing glass cutting device can fix the glass in a variety of ways, such as setting a high-pressure fan under the workbench, and the high-pressure fan will blow the air through the air duct switching plate to switch the air duct, and then enter the air nozzle between the air inlet plate and the workbench through the air duct, and blow to the glass and use the suction of the wind to fix the glass on the workbench. This fixing method mainly relies on the wind force and suction generated by the high-pressure fan to fix the glass. If the wind force or direction is slightly inappropriate, it may cause the position of the glass to shift during the cutting process, affecting the cutting accuracy. In addition, this method has high requirements for the sealing of the workbench, increasing the manufacturing cost and maintenance cost. Alternatively, a fixed seat is fixedly installed at the four corners of the upper surface of the workbench, and each fixed seat is connected to a movable fixed block. The fixed block is connected to the driving end of the driving assembly to drive the fixed block to approach or move away from the glass, thereby achieving the effect of fixing the glass around. However, when a small area of ​​large-sized glass needs to be cut, since the positioning device positions the four sides of the entire glass, unnecessary pressure or friction may be generated in the non-cutting area, which may not only affect the cutting accuracy, but also cause unnecessary damage or scratches to the glass.

[0004] Therefore, a fixing structure is needed to at least solve the above problems. Utility Model Content

[0005] A technical problem to be solved by the present disclosure is: how to solve the problem that the existing glass cutting device cannot flexibly adjust the fixing effect according to the cutting requirements, thereby resulting in low fixing effect and affecting the cutting accuracy.

[0006] In order to solve the above technical problems, the embodiments of the present disclosure provide a fixed structure including: an operating platform, the operating platform having a supporting surface for supporting glass; a pair of first connecting arms, the pair of first connecting arms are relatively arranged on the supporting surface along a first direction, and at least one first connecting arm is slidably connected to the operating platform along the first direction; a pair of second connecting arms, the pair of second connecting arms are relatively arranged between the pair of first connecting arms along a second direction, and at least one second connecting arm is slidably connected to the pair of first connecting arms along the second direction; a plurality of clamping devices, the clamping devices have a clamping portion arranged toward the supporting surface, the clamping portion is used to clamp the glass, the first connecting arm and the second connecting arm are respectively connected to one or more of the plurality of clamping portions; wherein the second direction satisfies a vertical condition with the first direction.

[0007] In some embodiments, the second connecting arm is a telescopic structure, and the second connecting arm can be telescoped along the first direction; the fixed structure also includes: a first limiter, the first limiter is arranged on the second connecting arm, and is used to limit the telescopic movement of the second connecting arm.

[0008] In some embodiments, the second connecting arm includes a first rod portion and a second rod portion, the second rod portion is slidably connected to the first rod portion along a first direction, a first through hole is provided on the surface of the first rod portion, and the first limiting member can pass through the first through hole and abut against the surface of the second rod portion.

[0009] In some embodiments, the fixed structure also includes: a connecting portion, which is slidably connected to the first connecting arm along the second direction, and both ends of the second connecting arm are slidably connected to a pair of first connecting arms through the connecting portion; a second limiting member, which is connected to the connecting portion and the first connecting arm and is used to limit the displacement of the connecting portion relative to the first connecting arm.

[0010] In some embodiments, a second through hole is provided on the surface of the connecting portion, and the second limiting member can pass through the second through hole and abut against the surface of the first connecting arm.

[0011] In some embodiments, the operating platform is provided with side walls on two opposite sides along the second direction, and the two ends of at least one first connecting arm are respectively slidably connected to a pair of side walls; the fixed structure also includes: a third limiting member, a third through hole is provided on the surface of at least one side wall, and the third limiting member can pass through the third through hole and abut against the end surface of the first connecting arm.

[0012] In some embodiments, the first connecting arm and the second connecting arm are spaced apart from the supporting surface, and the pressing portion is connected to a side of the connecting portion facing the supporting surface.

[0013] In some embodiments, the clamping device further includes a driving device, a driving end of which is connected to the clamping portion and is used to drive the clamping portion to move closer to or away from the supporting surface.

[0014] In some embodiments, a scale is provided on a surface of the first connecting arm and / or the second connecting arm facing away from the supporting surface.

[0015] The disclosed embodiment also provides a glass cutting device, comprising the above-mentioned fixing structure.

[0016] Through the above technical scheme, the fixing structure provided by the present invention is slidably connected to the operating platform along the first direction through at least one first connecting arm, so that it can slide freely in the first direction to adapt to glass of different lengths; it is slidably connected to a pair of first connecting arms along the second direction through at least one second connecting arm, so that it can slide freely in the second direction to adapt to glass of different widths; the clamping part of the clamping device directly acts on the glass surface, which is used to provide a uniform and stable clamping force for the glass when it is fixed, and is connected to one or more of the multiple clamping parts through the first connecting arm and the second connecting arm, so that the clamping part can be precisely adjusted in the first direction and the second direction, so as to achieve stable support and precise positioning of glass with different sizes or according to different cutting size requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 is a schematic structural diagram of a glass cutting device disclosed in an embodiment of the present disclosure;

[0019] Figure 2 It is a front view of the glass cutting device disclosed in the embodiment of the present disclosure.

[0020] Description of reference numerals:

[0021] 1. operating platform; 101. side wall; 102. slide groove; 2. first connecting arm; 3. second connecting arm; 301. first rod; 302. second rod; 4. pressing part; 5. connecting part; 6. first limiter; 7. second limiter; 8. third limiter; 9. cutting mechanism; 901. support frame; 902. cutting knife; X, first direction; Y, second direction. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0023] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0024] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present disclosure 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 cannot be understood as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0025] In addition, the words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0026] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0027] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

[0028] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0029] Example 1

[0030] In order to solve the problems existing in the prior art, the present disclosure provides a fixing structure, such as Figure 1 and Figure 2 As shown, it includes: an operating platform 1, the operating platform 1 has a supporting surface for supporting glass; a pair of first connecting arms 2, the pair of first connecting arms 2 are relatively arranged on the supporting surface along a first direction X, and at least one first connecting arm 2 is slidably connected to the operating platform 1 along the first direction X; a pair of second connecting arms 3, the pair of second connecting arms 3 are relatively arranged between the pair of first connecting arms 2 along a second direction Y, and at least one second connecting arm 3 is slidably connected to the pair of first connecting arms 2 along the second direction Y; a plurality of clamping devices, the clamping devices have a clamping portion 4 arranged toward the supporting surface, the clamping portion 4 is used to clamp the glass, the first connecting arm 2 and the second connecting arm 3 are respectively connected to one or more of the plurality of clamping portions 4; wherein the second direction Y and the first direction X meet a perpendicular condition.

[0031] The fixing structure provided by the embodiment of the present disclosure is arranged relatively along the first direction X by a pair of first connecting arms 2, and a pair of second connecting arms 3 are arranged relatively between the pair of first connecting arms 2 along the second direction Y perpendicular to the first direction X, so as to form a "well"-shaped structure, and the range surrounded by the "well"-shaped structure can be used as the required cutting range of the glass. At least one first connecting arm 2 is slidably connected to the operating platform 1 along the first direction X, so that it can slide freely in the first direction X to adapt to glass of different lengths; at least one second connecting arm 3 is slidably connected to the pair of first connecting arms 2 along the second direction Y, so that it can slide freely in the second direction Y to adapt to glass of different widths; the pressing part 4 of the pressing device directly acts on the glass surface to ensure that the glass is subjected to uniform and stable pressing force when being fixed, and the first connecting arm 2 and the second connecting arm 3 are connected to one or more of the plurality of pressing parts 4, so that the pressing part 4 can be accurately adjusted in the first direction X and the second direction Y, so as to realize stable support and precise positioning of glass with different sizes or according to different cutting size requirements. Wherein the first direction X and the second direction Y are parallel to the supporting surface respectively.

[0032] In some embodiments, the second connecting arm 3 is a telescopic structure, and the second connecting arm 3 can be telescoped along the first direction X; the fixed structure also includes a first limiter 6, which is arranged on the second connecting arm 3 and is used to limit the telescopic movement of the second connecting arm 3.

[0033] The second connecting arm 3 can be an electric push rod structure. Since the second connecting arm 3 is connected between a pair of first connecting arms 2, the second connecting arm 3 adopts an electric push rod structure that can be extended and retracted along the first direction X, so that the second connecting arm 3 can drive at least one first connecting arm 2 to move along the first direction X. By arranging a first limiter 6 on the second connecting arm 3, the movement of the first connecting arm 2 along the first direction X can be effectively limited when the second connecting arm 3 is extended and retracted along the first direction X, so that the range of the glass to be cut can be accurately determined in the first direction X and fixed.

[0034] In some embodiments, the second connecting arm 3 includes a first rod portion 301 and a second rod portion 302, the second rod portion 302 is slidably connected to the first rod portion 301 along the first direction X, a first through hole is provided on the surface of the first rod portion 301, and the first limit member 6 can pass through the first through hole and abut against the surface of the second rod portion 302.

[0035] The first rod portion 301 is a hollow rod structure that can be sleeved on the second rod portion 302, and the second rod portion 302 is slidably connected to the first rod portion 301 along the first direction X. The first stopper 6 can be an adjustable bolt top screw, and the first stopper 6 can pass through the first through hole and contact or abut against the surface of the second rod portion 302, so as to limit the sliding stroke of the second rod portion 302 along the first direction X, and avoid excessive extension or retraction of the second connecting arm 3 due to operational errors or mechanical failures, thereby achieving effective and precise control of the movement of the first connecting arm 2, so as to ensure that when the first connecting arm 2 is adjusted according to the cutting size requirements, the glass can be firmly and accurately fixed in position.

[0036] In some embodiments, the fixed structure also includes a connecting portion 5, which is slidably connected to the first connecting arm 2 along the second direction Y, and both ends of the second connecting arm 3 are slidably connected to a pair of first connecting arms 2 through the connecting portion 5; a second limiting member 7, which is connected to the connecting portion 5 and the first connecting arm 2, and is used to limit the displacement of the connecting portion 5 relative to the first connecting arm 2.

[0037] The first connecting arm 2 is a rod structure, and the connecting part 5 can be a hollow rod structure. The connecting part 5 is sleeved on the first connecting arm 2, and the connecting part 5 and the first connecting arm 2 are clearance-matched, so that the connecting part 5 can slide along the second direction Y. At least one second connecting arm 3 is connected to the first connecting arm 2 at both ends through the connecting part 5, so that the second connecting arm 3 can move along the second direction Y to adapt to the glass with different cutting size requirements. By arranging a second stopper 7 on each connecting part 5, the movement range of the second connecting arm 3 can be effectively limited when it moves along the second direction Y, so that the range of glass to be cut can be accurately determined in the second direction Y and fixed.

[0038] In some embodiments, a second through hole is provided on the surface of the connecting portion 5 , and the second limiting member 7 can pass through the second through hole and abut against the surface of the first connecting arm 2 .

[0039] The second limiting member 7 can be a bolt top screw with the same structure as the first limiting member 6. The second limiting member 7 can pass through the second through hole and contact or tightly abut the surface of the first connecting arm 2, so as to limit the sliding stroke of the second connecting arm 3 along the second direction Y, so as to ensure that when the second connecting arm 3 is adjusted according to the cutting size requirements, the glass can be firmly and accurately fixed in position.

[0040] In some embodiments, the operating platform 1 is provided with side walls 101 on opposite sides along the second direction Y, and the two ends of at least one first connecting arm 2 are respectively slidably connected to a pair of side walls 101; the fixed structure also includes a third limiting member 8, and the surface of at least one side wall 101 is provided with a third through hole, and the third limiting member 8 can pass through the third through hole and abut against the end surface of the first connecting arm 2.

[0041] The pair of side walls 101 arranged opposite to each other along the second direction Y can limit the displacement of the first connecting arm 2 in the second direction Y. By sliding the first connecting arm 2 to the pair of side walls 101, the distance between the pair of first connecting arms 2 can be flexibly adjusted according to the cutting requirements. The third through hole can be a long through hole, and the length direction of the long through hole is arranged along the first direction X. The length of the third through hole can be designed to be maximized with the motion range of the first connecting arm 2 to adapt to glass of different sizes. The third limiter 8 can be a bolt top screw. By passing the third limiter 8 through the third through hole and contacting or tightly abutting with the end surface of the first connecting arm 2, the displacement of the first connecting arm 2 relative to the operating platform 1 can be limited.

[0042] In some embodiments, the two ends of a pair of first connecting arms 2 are respectively slidably connected to a pair of side walls 101, and the third limit members 8 are a pair. The pair of third limit members 8 are respectively used to pass through the third through holes and abut against the end surfaces of the pair of first connecting arms 2. By sliding the two ends of a pair of first connecting arms 2 to the pair of side walls 101, the cutting range can be moved to the bottom of the cutting knife 902 for cutting, and without moving the glass, continuous or selective cutting can be achieved at different positions of the same piece of glass only by changing the sliding connection points of the pair of first connecting arms 2 on the side walls 101.

[0043] By combining the through hole with the limit piece, not only the assembly process of the fixed structure is simplified, but also the later fine-tuning or maintenance and replacement of the limit position is convenient, thereby reducing the use cost and maintenance difficulty of the fixed structure.

[0044] In some embodiments, Figure 2 As shown, the first connecting arm 2 and the second connecting arm 3 are spaced apart from the supporting surface, and the pressing portion 4 is connected to the side of the connecting portion 5 facing the supporting surface.

[0045] A pair of side walls 101 are provided with third through holes along the first direction X, and the third through holes are at a certain distance from the support surface of the operating platform 1. A pair of first connecting arms 2 are provided with connecting blocks at both ends, and the connecting blocks extend into the third through holes. The inner wall of the third through hole can support the first connecting arm 2 to form a certain distance from the support surface on one side facing the support surface. Each connecting portion 5 is connected to a clamping portion 4 on one side facing the support surface. When the second connecting arm 3 moves along the second direction Y through the connecting portion 5, the clamping portion 4 can be driven to move, thereby fixing the glass plate according to the cutting requirements.

[0046] In some embodiments, both ends of a pair of second connecting arms 3 are slidably connected to the first connecting arm 2 via the connecting portion 5. Thus, the pressing portion 4 can evenly fix the glass at four positions, further improving the fixing effect.

[0047] In some embodiments, the clamping device further includes a driving device, a driving end of which is connected to the clamping portion 4 and is used to drive the clamping portion 4 to move closer to or away from the supporting surface.

[0048] The driving device can be an electric telescopic rod structure. When the electric telescopic rod starts working, the motor drives the internal mechanism to operate, thereby realizing the effective extension or shortening of the telescopic rod, so as to drive the clamping part 4 connected thereto to move synchronously, so that the clamping part 4 can be close to or away from the support surface. Driving the clamping part 4 by the driving device can ensure that the clamping part 4 applies a suitable and stable clamping force to the object to meet the requirements of different working conditions. The clamping part 4 can be a clamping block or a suction cup, etc.

[0049] In some embodiments, the first connecting arm 2 may be a hollow rod structure, the driving device may be partially disposed inside the first connecting arm 2 and be slidably connected to the first connecting arm 2 to save installation space, and a long through hole may be provided on the side of the first connecting arm 2 facing the support surface to avoid interference with the rod portion of the driving device when moving along the first connecting arm 2.

[0050] In some embodiments, a scale is provided on the surface of the first connecting arm 2 and / or the second connecting arm 3 facing away from the supporting surface.

[0051] By setting a scale, the operator can intuitively and accurately read the telescopic position of the first connecting arm 2 and / or the second connecting arm 3, so that the glass can be fixed according to the cutting requirements, and the position of the connecting arm can be fine-tuned without additional measuring tools, which simplifies the operation process and improves work efficiency.

[0052] The fixing structure provided by the embodiment of the present disclosure applies the pressing force directly to the glass surface via the pressing part 4, and drives the plurality of pressing parts 4 to be fixed according to the required cutting range of the glass through the relative movement of a pair of first connecting arms 2 and a pair of second connecting arms 3 in the first direction X and the second direction Y, thereby avoiding unnecessary pressure or friction in the non-cutting area, improving the fixing effect and thus improving the positioning accuracy.

[0053] Example 2

[0054] The embodiment of the present disclosure provides a glass cutting device, such as Figure 1 and Figure 2 As shown, it includes the fixing structure provided by the above embodiment.

[0055] The glass cutting device further comprises a cutting mechanism 9, which comprises a support frame 901 and a cutting knife 902. The support frame 901 is a U-shaped structure, which spans above the support surface of the operating platform 1 along the second direction Y. The cutting knife 902 is arranged toward the support surface of the operating platform 1, and the end of the cutting knife 902 away from the support surface can be connected to the crossbeam of the support frame 901 through an electric telescopic rod, and the electric telescopic rod can drive the cutting knife 902 to approach or move away from the support surface. The cutting mechanism 9 also comprises a linear drive mechanism, which is connected to the crossbeam of the support frame 901, and the driving end of the linear drive mechanism is connected to the cutting knife 902 to drive the cutting knife 902 to move along the second direction Y. The operating platform 1 has a pair of slide grooves 102 arranged oppositely along the second direction Y, and the opposite ends of the support frame 901 are respectively slidably connected to the pair of slide grooves 102, so that the cutting mechanism 9 can move along the first direction X, wherein a side wall of the slide groove 102 can overlap with the side wall 101 on the operating platform. The cutting blade 902 of the cutting mechanism 9 moves along the first direction X and the second direction Y, so that the glass can be cut in the length and / or width direction, thereby improving the efficiency and flexibility of cutting.

[0056] The glass cutting device provided in the embodiment of the present disclosure utilizes the fixed structure provided in embodiment 1 of the present disclosure, so that the glass cutting device can accurately position and cut around the position where the glass needs to be cut according to different cutting requirements of the glass, thereby ensuring the accuracy and consistency of the cutting, avoiding unnecessary pressure or friction in non-cutting areas and material waste or cutting errors, thereby improving the cutting accuracy.

[0057] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0058] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A fixing structure, characterized in that: include: An operating platform (1), the operating platform (1) having a supporting surface for supporting glass; A pair of first connecting arms (2), the pair of first connecting arms (2) being arranged on the support surface opposite to each other along a first direction, and at least one of the first connecting arms (2) being slidably connected to the operating platform (1) along the first direction; a pair of second connecting arms (3), the pair of second connecting arms (3) being arranged relatively between the pair of first connecting arms (2) along a second direction, and at least one of the second connecting arms (3) being slidably connected to the pair of first connecting arms (2) along the second direction; and, A plurality of pressing devices, each of which has a pressing portion (4) disposed toward the supporting surface, the pressing portion (4) being used to press the glass, the first connecting arm (2) and the second connecting arm (3) being respectively connected to one or more of the plurality of pressing portions (4); The second direction and the first direction meet a perpendicular condition.

2. The fixing structure according to claim 1, characterized in that: The second connecting arm (3) is a telescopic structure, and the second connecting arm (3) can be telescoped along the first direction; Also includes: A first limiting member (6), wherein the first limiting member (6) is arranged on the second connecting arm (3) and is used for limiting the telescopic movement of the second connecting arm (3).

3. The fixing structure according to claim 2, characterized in that: The second connecting arm (3) comprises a first rod portion (301) and a second rod portion (302); the second rod portion (302) is slidably connected to the first rod portion (301) along the first direction; a first through hole is provided on the surface of the first rod portion (301); the first limiting member (6) can pass through the first through hole and abut against the surface of the second rod portion (302).

4. The fixing structure according to claim 1, characterized in that: Also includes: A connecting portion (5), the connecting portion (5) being slidably connected to the first connecting arm (2) along the second direction, and two ends of the second connecting arm (3) being slidably connected to a pair of the first connecting arms (2) via the connecting portion (5); A second limiting member (7), the second limiting member (7) is connected to the connecting portion (5) and the first connecting arm (2), and is used to limit the displacement of the connecting portion (5) relative to the first connecting arm (2).

5. The fixing structure according to claim 4, characterized in that: A second through hole is provided on the surface of the connecting portion (5), and the second limiting member (7) can pass through the second through hole and abut against the surface of the first connecting arm (2).

6. The fixing structure according to claim 1, characterized in that: The operating platform (1) is provided with side walls (101) on two opposite sides along the second direction, and two ends of at least one of the first connecting arms (2) are slidably connected to a pair of the side walls (101); Also includes: A third limiting member (8), a third through hole is provided on the surface of at least one of the side walls (101), and the third limiting member (8) can pass through the third through hole to abut against the end surface of the first connecting arm (2).

7. The fixing structure according to claim 4, characterized in that: The first connecting arm (2) and the second connecting arm (3) are spaced apart from the supporting surface, and the pressing portion (4) is connected to a side of the connecting portion (5) facing the supporting surface.

8. The fixing structure according to claim 7, characterized in that: The clamping device further comprises a driving device, wherein a driving end of the driving device is connected to the clamping portion (4) and is used to drive the clamping portion (4) to move closer to or away from the supporting surface.

9. The fixing structure according to claim 1, characterized in that: A scale is provided on the surface of the first connecting arm (2) and / or the second connecting arm (3) facing away from the supporting surface.

10. A glass cutting device, characterized in that: Comprising at least one fixing structure according to any one of claims 1 to 9.

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