Frame and framework for fixing movable steel mesh

Abstract

The invention discloses a frame and a framework for fixing a movable steel mesh, and relates to the field of movable steel mesh printing, the frame and the framework comprise a frame body, a mounting cavity is formed in the frame body, and a receding opening is formed in the top of the mounting cavity; the tensioning piece comprises a main body and a hook part, the main body is movably mounted in the mounting cavity, and the hook part extends out of the frame body from the avoiding opening; and the first pneumatic part is arranged in the mounting cavity, the output end of the first pneumatic part is connected with the main body, and the first pneumatic part drives the hook part to move through the main body to generate or release the tensioning force. The frame can simultaneously control the movement of the hook part and the pressing plate through an external air source, is simple and convenient, and realizes efficient disassembly and assembly.

Description

Technical Field

[0001] This invention relates to the field of movable stencil printing, and in particular to a frame and border for fixing movable stencils. Background Technology

[0002] SMT (Surface Mount Technology) is a method for mounting and connecting electronic components. The core of SMT processing lies in using a movable stencil with pre-set mesh for solder paste printing. With the advocacy and development of environmental protection concepts, the movable stencils used for solder paste printing have gradually evolved from the early fixed integrated structure to movable stencils that can be moved and replaced freely.

[0003] Existing movable steel mesh is typically disassembled and replaced by a pneumatic device within the frame that drives a movable swing arm. After replacement, a spring-loaded mechanism returns the swing arm to press and tension the steel mesh onto the frame for printing. Because the swing arm oscillates around a single axis, it requires significant space at both ends, resulting in a large overall frame size. This not only complicates assembly but also significantly impacts overall cost. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a frame and edge for fixing movable steel mesh. The tensioning components of this solution can be controlled within a small operating space, thereby effectively reducing the size of the frame and lowering manufacturing costs. The frame uses hooks and pressure plates to fix the edges of the movable steel mesh. The movement of the hooks and pressure plates can be controlled simultaneously via an external air source, making it simple, convenient, and enabling efficient assembly and disassembly.

[0005] The technical solution adopted by this invention to solve its technical problem is: a frame for fixing a movable steel mesh, comprising:

[0006] The frame has an internal mounting cavity, and the top of the mounting cavity has an opening for clearance.

[0007] The tensioning member includes a main body and a hook, the main body being movably installed in the mounting cavity, and the hook extending from the clearance opening to the outside of the frame;

[0008] A first pneumatic component is disposed in the mounting cavity. The output end of the first pneumatic component is connected to the main body. The first pneumatic component drives the hook to move through the main body to generate or release tension.

[0009] The frame of this design is located on the side of the frame, with hooks used to engage the edge of the movable steel mesh from below. The tensioning element drives the main body, i.e., it moves the hooks, allowing the tensioning element to slide to both sides to tension and release the movable steel mesh.

[0010] Preferably, the main body includes an abutting part and a sliding part. The abutting part is connected to the output end of the pneumatic component, the sliding part is provided corresponding to the clearance opening, the sliding part slides in cooperation with the inner wall of the mounting cavity, and the end of the sliding part is fixed to the abutting part.

[0011] The abutting part is used to fix the output end of the pneumatic component, the sliding part can be used to block the inside of the clearance opening to prevent external objects from interfering with the structure inside the mounting cavity, and the hook part can move within the clearance opening to provide or release tension.

[0012] Before hooking the movable steel mesh, air is supplied through the second port, allowing the hook to approach the inner side, making it easier for the movable steel mesh to hook onto its edge. Then, air is released from the second port. Under the combined force of the spring provided by the first return spring and the thrust from the first air supply to the first piston, tension is quickly provided, tightening the edge of the movable steel mesh. The spring provides a more sustained tension. After the tension stabilizes, the air supply from the first port can be appropriately released, primarily relying on the spring for tension, or, if the spring tension is insufficient, the first air port can assist in providing greater tension. When it is necessary to release the tension, air is released from the first port and supplied from the second port, overcoming the spring force and causing the hook to slide inward again.

[0013] Preferably, the first pneumatic component includes a cylinder body, a first piston, a push rod, and a first return spring. The first piston is slidably fitted inside the cylinder body. The inner end of the push rod is fixed to the first piston. The push rod extends slidably from the cylinder port of the cylinder body to the outside. A first air port is provided at one end of the cylinder body near the cylinder port. The first return spring is located between the first piston and the cylinder port. A second air port is provided at the bottom of the cylinder body.

[0014] Air is supplied to the cylinder through the first and second air ports respectively, which pushes the first piston to slide. The first piston can realize the movement of the external body through the push rod, and the tension control is more precise.

[0015] Preferably, each tensioning member is provided with a plurality of first pneumatic members arranged in parallel, each first air port is connected to a corresponding air source through a first air passage, and each second air port is connected to a corresponding air source through a second air passage.

[0016] Since the frame is long and narrow, the corresponding tensioning component is also long and narrow. Therefore, setting several parallel first pneumatic components can improve the driving force and provide a more balanced driving force to each part of the tensioning component, thus avoiding jamming caused by inconsistent displacement.

[0017] Preferably, reinforcing beams are fixed side-by-side on the outer wall of the frame. By providing reinforcing beams, the overall rigidity of the frame can be significantly improved.

[0018] A frame for fixing a movable steel mesh includes four corner connectors and four side frames, the corner connectors and the side frames being alternately connected to form a rectangle.

[0019] A frame with the aforementioned borders can provide more stable tension.

[0020] Preferably, the corner connector is provided with a third air passage and a fourth air passage, the two ends of the third air passage are respectively connected to the first air passage, wherein the first air passage or the third air passage is provided with at least a first air nozzle, the first air nozzle is connected to a corresponding air source, the two ends of the fourth air passage are respectively connected to the second air passage, wherein the second air passage or the fourth air passage is provided with at least a second air nozzle, the second air nozzle is connected to a corresponding air source.

[0021] The third and fourth air passages connect the air circuits of the starting components on each frame, enabling synchronous tensioning and detensioning. External air is supplied through the first and second air nozzles respectively.

[0022] Preferably, the corner connector is equipped with a second pneumatic component. The output end of the second pneumatic component is positioned above the corner connector, and the output ends of adjacent second pneumatic components are connected by a pressure plate. The pressure plate is used to press the movable steel mesh. The pressure plate is positioned above the hook. When the first pneumatic component drives the hook to generate tension, the second pneumatic component drives the pressure plate downward. The two second pneumatic components can move the pressure plate up and down. While the tensioning component is tensioning, the second pneumatic components drive the pressure plate downward, pressing the edge of the movable steel mesh downward and locking the edge of the movable steel mesh in a more stable tensioning and fixing manner.

[0023] Preferably, the bottom of the second pneumatic component is provided with a third air port, the third air port is connected to the second air channel through a fifth air channel, and a second return spring is provided in the half cavity opposite to the third air port.

[0024] The first and second pneumatic components can be linked together, and one of the air sources can be shared. That is, while the first pneumatic component provides tension to the tensioning component, the second pneumatic component also loses its air supply. The driving force of the second return spring can also drive the pressure plate to press down, thereby pressing and fixing the edge of the movable steel mesh. When the first pneumatic component releases the tension of the tensioning component, the second pneumatic component simultaneously drives the pressure plate to move up.

[0025] Preferably, the second pneumatic component includes a movable cavity, a second piston, and a column. The movable cavity is disposed within the corner connector. The second piston is slidably fitted into the movable cavity. The inner end of the column is fixed to the second piston. A sealing plate is provided at the opening of the movable cavity. A second return spring is sleeved on the column. Both ends of the second return spring abut against the sealing plate and the second piston, respectively. The third air port is disposed at the bottom of the movable cavity.

[0026] The beneficial effects of this invention are:

[0027] Compared to lever-type tensioners, this solution allows for control within a smaller operating space, effectively reducing the frame size and manufacturing costs. Furthermore, assembly is simple and convenient; the tensioner is simply slid into the mounting cavity from one end of the frame.

[0028] The frame uses hooks and pressure plates to fix the edges of the movable steel mesh. The movement of the hooks and pressure plates can be controlled simultaneously by an external air source, which is simple, convenient and enables efficient assembly and disassembly. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only eleven of the drawings in the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 This is a three-dimensional structural diagram of the frame in the embodiments of this application;

[0031] Figure 2 This is a cross-sectional view of the frame and the steel mesh in the embodiment of this application;

[0032] Figure 3 This is a schematic diagram of the first pneumatic component, tensioning component, and steel mesh in the embodiments of this application;

[0033] Figure 4 This is a perspective view of the cooperation between the first pneumatic component and the tensioning component in the embodiments of this application;

[0034] Figure 5This is a schematic diagram of the border in the embodiments of this application;

[0035] Figure 6 This is a schematic diagram of the cylinder block and the first and second air passages after being cut open in the embodiment of this application;

[0036] Figure 7 This is a perspective view of the corner connector in the embodiment of this application;

[0037] Figure 8 This is a schematic diagram showing the corner connectors cutting open the third and fourth air passages respectively in the embodiment of this application;

[0038] Figure 9 This is a schematic diagram of the pressure plate and column in the embodiment of this application;

[0039] Figure 10 This is a cross-sectional view of the second pneumatic component according to an embodiment of this application;

[0040] Figure 11 This is a schematic diagram of the frame being bent under pressure in the existing technology;

[0041] Among them, 10, frame; 11, mounting cavity; 12, clearance opening; 13, first air passage; 14, second air passage; 15, protruding strip; 16, slot; 20, tensioning element; 21, main body; 211, abutting part; 212, sliding part; 22, hook part; 30, first pneumatic component; 31, first air port; 32, second air port; 33, first return spring; 34, first piston; 35, push rod; 36, cylinder body; 40. Pressure plate; 50. Corner connector; 51. Third air passage; 52. Fourth air passage; 53. Movable cavity; 60. Second pneumatic component; 61. Third air port; 62. Fifth air passage; 63. Second return spring; 64. Second piston; 641. Inner cavity; 642. Locking port; 65. Column; 66. Spring pin; 70. Movable steel mesh; 71. Assembly strip; 72. Connecting strip; 73. Connecting corner; 74. Reinforcing beam. Detailed Implementation

[0042] To enhance understanding of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. These embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0043] Example 1

[0044] A frame for fixing movable steel mesh, in conjunction with Figure 1 and 2. Figure 2 As shown, it includes:

[0045] The frame 10 is a strip-shaped structure. The frame 10 has an installation cavity 11 that extends and penetrates along the length direction inside. The top of the installation cavity 11 has a clearance opening 12, which also extends along the length direction of the frame 10.

[0046] Combination Figure 4 As shown, the tensioning member 20 includes a main body 21 and a hook 22. The main body 21 is movably installed in the mounting cavity 11, and the hook 22 extends from the clearance opening 12 to the outside of the frame 10 to cooperate with the movable steel mesh 70. The hook 22 is configured as a long strip-shaped bent structure. Of course, in some other embodiments, the hook 22 and the main body 21 can also be configured as a strip-shaped intermittent structure, and this application does not make specific limitations in this regard. The continuous strip structure of the hook 22 provides more uniform tension and better tension effect for the movable steel mesh 70, and the continuous strip structure of the main body 21 also facilitates the driving of the first pneumatic component 30 and improves stability.

[0047] Combination Figure 5 As shown, it should be noted that the clearance opening 12 needs to have a certain width of space to allow for the movement of the hook 22 of the tensioning member 20. When the tensioning member 20 slides under the drive of the first pneumatic member 30, the hook 22 can also move at the clearance opening 12. That is to say, when the first pneumatic member 30 drives the tensioning member 20 to move to the release state, the clearance opening 12 can at least retain the space for the hook 22 to separate from the movable steel mesh 70, and when the first pneumatic member 30 moves to the tension state, the clearance opening 12 can at least retain the space for the hook 22 to hook with the movable steel mesh 70.

[0048] Combination Figure 3 As shown, a first pneumatic component 30 is disposed in the mounting cavity 11. The output end of the first pneumatic component 30 is connected to the main body 21. The first pneumatic component 30 drives the hook 22 to move through the main body 21 to generate or release tension. Compared with the swing-arm type tensioner 20, the tensioner 20 of this solution can be controlled in a smaller working space, thereby effectively reducing the volume of the frame and lowering manufacturing costs. Furthermore, during assembly, the tensioner 20 can be slid into the mounting cavity 11 from one end of the frame, making the assembly process simple and convenient.

[0049] The frame of this design is located on the side of the frame, and the hook 22 is used to hook the edge of the movable steel mesh 70 from below. The tensioning member 20 can drive the main body 21, that is, drive the hook 22 to move, so that the tensioning member 20 can slide to both sides to achieve tensioning and releasing of the movable steel mesh 70.

[0050] The main body 21 includes an abutment portion 211 and a sliding portion 212. The abutment portion 211 is connected to the output end of the pneumatic component. The sliding portion 212 is provided corresponding to the clearance opening 12 and slides against the inner wall of the mounting cavity 11. The end of the sliding portion 212 is fixed to the end of the abutment portion 211. In this embodiment, the main body 21 has an L-shaped structure.

[0051] The abutting part 211 is used to fix the output end of the pneumatic component, the sliding part 212 can be used to block the inside of the clearance opening 12 to prevent external objects from interfering with the structure inside the mounting cavity 11, and the hook part 22 can move within the clearance opening 12 to provide or release tension.

[0052] The first pneumatic component 30 can be a cylinder or a pneumatic push rod 35, etc. The first pneumatic component 30 drives the hook 22 to move, so that the hook 22 can switch between a tensioned state and a release state, so as to facilitate the disassembly and installation of the movable steel mesh 70.

[0053] Since the tensioning member 20 in this embodiment can switch states by sliding, the required space is smaller than that required by the existing switching method that requires the rotation of a pivot, which in turn reduces the size of the frame and effectively reduces the manufacturing cost.

[0054] Before hooking the movable steel mesh 70, air is supplied through the second air inlet, allowing the hook 22 to move closer to the inside, making it easier for the movable steel mesh 70 to hook onto its edge. Then, air is released from the second air inlet 32. Under the combined force of the spring provided by the first return spring 33 and the thrust provided by the air supply from the first air inlet 31 to the first piston 34, tension is quickly provided, tightening the edge of the movable steel mesh 70. The spring can provide a more sustained tension. After the tension stabilizes, the air supply from the first air inlet 31 can be appropriately released, with the spring primarily providing the tension, or, if the spring tension is insufficient, the first air inlet 31 can assist in providing a greater tension. When it is necessary to release the tension, air is released from the first air inlet 31, and air is supplied from the second air inlet 32, overcoming the spring force and causing the hook 22 to slide inward again.

[0055] The first pneumatic component 30 includes a cylinder body 36, a first piston 34, and a push rod 35. The first piston 34 is slidably fitted inside the cylinder body 36. The inner end of the push rod 35 is fixed to the first piston 34. The push rod 35 extends slidably from the cylinder port of the cylinder body 36 to the outside. A first air port 31 is provided at one end of the cylinder body 36 near the cylinder port. The first return spring 33 is located between the first piston 34 and the cylinder port. A second air port 32 is provided at the bottom of the cylinder body 36.

[0056] Air is supplied to the cylinder 36 through the first air port 31 and the second air port 32 respectively, which pushes the first piston 34 to slide. The first piston 34 can realize the movement of the external main body 21 through the push rod 35, and the tension control is more precise.

[0057] The cylinder thrust can be selected according to the following formula:

[0058] Thrust F (N) = Air pressure P (Pa) × Cylinder cross-sectional area S (m²)

[0059] Simplified practical version (common units can be directly calculated):

[0060] F(N)=P(MPa)×π×(D / 2)²×10 6

[0061] (D is the cylinder inner diameter, in mm; π is taken as 3.14)

[0062] 1. To convert to kilogram-force (kgf), divide the result by 9.8 (for a rough calculation, divide by 10).

[0063] 2. This is the theoretical thrust. The actual thrust needs to take into account air pressure loss, cylinder friction, and seal resistance, and is usually 85%-95% of the theoretical value.

[0064] 3. The cylinder pull force will be slightly less than the thrust force (because the piston rod occupies part of the cross-sectional area). The effective force-bearing area (cylinder diameter area - rod diameter area) is required to calculate the pull force.

[0065] Combination Figure 6 As shown, a tensioning member 20 is provided with several first pneumatic members 30 arranged in parallel. Each first air port 31 is connected to the corresponding air source through a first air passage 13, and each second air port 32 is connected to the corresponding air source through a second air passage 14.

[0066] The cylinder 36 of the first pneumatic component 30 in the same group is disposed on the side wall of a strip structure, wherein the first air passage 13 and the second air passage 14 are disposed inside the strip structure.

[0067] Since the frame 10 is long and narrow, the corresponding tensioning member 20 will also be long and narrow. Therefore, setting several parallel first pneumatic members 30 can improve the driving force on the one hand, and provide a more balanced driving force to each part of the tensioning member 20 on the other hand, so as to avoid the jamming caused by inconsistent displacement.

[0068] The first pneumatic component 30 arranged in parallel forms a cylinder strip. In order to release the stress on the outer frame 10 evenly, protrusions 15 are provided on the outer side and the lower side of the inner wall of the upper surface of the cylinder strip. Corresponding grooves 16 are provided on the inner wall of the outer frame 10 to fit the protrusions 15. The cylinder body is inserted from the end of the outer frame 10. The protrusions 15 and the grooves 16 are correspondingly engaged. The cylinder strip can be firmly locked in the outer frame 10 through two points. Adding this structure can reduce the deformation by 3-4mm.

[0069] Meanwhile, in the assembly process of the frame of the present application embodiment, it is only necessary to push the tensioning member 20 and the first pneumatic member 30 from one end of the frame to the other end to the designated position in the mounting cavity 11. Compared with the prior art which requires precise alignment and other operations, the assembly method of the frame of the present application embodiment is simpler and more convenient, effectively reducing the assembly cost of the frame.

[0070] Combination Figure 2 As shown, reinforcing beams 74 are fixed side-by-side on the outer wall of the frame 10. By providing reinforcing beams 74, the overall rigidity of the frame 10 can be significantly improved. Because the frame 10 is fixed in the printing equipment, combined with... Figure 11 As shown, multiple cylinders are provided downwards from the upper part for clamping, so the middle part of the frame 10 will be subjected to greater pressure, causing the frame 10 to deform. At the same time, when the tensioning member 20 tightens the movable steel mesh 70, the frame 10 will also be subjected to greater lateral tension, which can also easily cause the frame 10 to deform. Therefore, the rigidity of the frame 10 will directly affect the fixation of the movable steel mesh 70. This solution can significantly improve the rigidity of the frame 10 by setting the reinforcing beam 74, resulting in smaller deformation and better meeting production needs.

[0071] Example 2

[0072] like Figure 1 and Figure 7 As shown, a frame for fixing a movable steel mesh 70 includes four corner connectors 50 and four side frames, the corner connectors 50 and the side frames being alternately connected to form a rectangle.

[0073] A frame with the aforementioned borders can provide more stable tension.

[0074] Combination Figure 8 As shown, the corner connector 50 is provided with a third air passage 51 and a fourth air passage 52. The two ends of the third air passage 51 are respectively connected to the first air passage 13. The first air passage 13 or the third air passage 51 is provided with at least a first air nozzle, which is connected to a corresponding air source. The two ends of the fourth air passage 52 are respectively connected to the second air passage 14. The second air passage 14 or the fourth air passage 52 is provided with at least a second air nozzle, which is connected to a corresponding air source.

[0075] The loops formed by the first air passage 13 and the third air passage 51, and the loops formed by the second air passage 14 and the fourth air passage 52, are all under the same air pressure in the first pneumatic component 30 inside the frame, which can simultaneously drive the tensioning component 20, so that the tensioning component 20 can be tensioned and released more smoothly with the site and the movable steel mesh 70.

[0076] The air passages of the starting components of each frame are connected through the third air passage 51 and the fourth air passage 52, enabling synchronous tensioning and detensioning. External air is supplied through the first and second air nozzles respectively.

[0077] All the first pneumatic components 30 in the loop are connected, so only an external air source needs to supply air to the air supply channel to enable all pneumatic components to work simultaneously, that is, to push the main body 21 to slide in the mounting cavity 11, that is, to drive the hooks 22 of each frame to move.

[0078] The frame is mainly tensioned and released by the tensioning element 20, so that the movable steel mesh 70 can be fixed on the frame for printing operations.

[0079] Combination Figure 9 As shown, the corner connector 50 is equipped with a second pneumatic component 60. The output end of the second pneumatic component 60 is positioned above the corner connector 50. The output ends of adjacent second pneumatic components 60 are connected by a pressure plate 40. The pressure plate 40 is used to press the movable steel mesh 70. The pressure plate 40 is positioned above the hook 22. When the first pneumatic component 30 drives the hook 22 to generate tension, the second pneumatic component 60 drives the pressure plate 40 to press downward. The two second pneumatic components 60 can drive the pressure plate 40 to move upward and downward. While the tensioning component 20 is tensioning, the second pneumatic component 60 drives the pressure plate 40 to press downward, pressing the edge of the movable steel mesh 70 downward. This locking of the edge of the movable steel mesh 70 in the correct orientation achieves more stable tension and fixation.

[0080] The pressure plate 40 is a strip-shaped plate structure that extends along the length of the frame, with its middle section covering the top of the frame. Since one pressure plate 40 needs to be controlled by the supports on the two corner connectors 50, two pressure plates 40 can be provided. The two pressure plates 40 are set on opposite sides of the frame, and the corresponding pressure plates 40 on both sides can press the sides of the movable steel mesh 70, providing good stability.

[0081] It should be noted that when the movable steel mesh 70 is installed on the frame, the pressure plate 40 can at least partially cover the edge of the movable steel mesh 70, so that the movable steel mesh 70 can be installed on the frame more stably. When the support member moves upward after being filled with gas in the movable cavity 53240, the output end of the second pneumatic member 60 can lift the pressure plate 40 to facilitate the replacement or disassembly of the movable steel mesh 70.

[0082] The bottom of the second pneumatic component 60 is provided with a third air port 61, which is connected to the second air passage 14 through a fifth air passage 62. A second return spring 63 is provided in the half-cavity opposite to the third air port 61. The difference between the internal structure of the second pneumatic component 60 and the first pneumatic component 30 is that the half-cavity corresponding to the second return spring 63 does not have an air port connected to the air source. The air port is only used to maintain balance with the external air pressure. The second return spring 63 drives the internal first piston 34 to return to its original position.

[0083] The first pneumatic component 30 and the second pneumatic component 60 can be linked together, and one of the air sources can be shared. That is, while the first pneumatic component 30 provides tension to the tensioning component 20, the second pneumatic component 60 also loses its air supply. The driving force of the second return spring 63 can also drive the pressure plate 40 to press down, thereby pressing and fixing the edge of the movable steel mesh 70. When the first pneumatic component 30 releases the tension of the tensioning component 20, the second pneumatic component 60 simultaneously drives the pressure plate 40 to move upward.

[0084] The beneficial effects of this invention are:

[0085] Compared to the rocker arm type tensioner 20, the tensioner 20 in this solution can be controlled within a smaller operating space, thereby effectively reducing the size of the frame and lowering manufacturing costs. Furthermore, during assembly, the tensioner 20 can be slid into the mounting cavity 11 from one end of the frame, making the assembly process simple and convenient.

[0086] The frame uses hooks 22 and pressure plates 40 to fix the edge of the movable steel mesh 70. The movement of hooks 22 and pressure plates 40 can be controlled simultaneously by an external air source, which is simple, convenient and efficient for assembly and disassembly.

[0087] Example 3

[0088] Combination Figure 11As shown, the outer edge of the movable steel mesh 70 is provided with a connecting component, which includes an assembly strip 71, a connecting strip 72, and a connecting angle 73. One side of the assembly strip 71 is provided with a bending structure. The outer side of the bending structure is used for the pressure plate 40 to press downward, and the inner side of the bending structure is used for the hook part 22 to hook outward. The pressure plate 40 and the hook part 22 cooperate to limit the assembly strip 71. The other side of the assembly strip 71 and one side of the connecting strip 72 adopt a detachable slot connection method. Specifically, a narrower through groove is provided on the other side of the assembly strip 71, and an end fitting the through groove is provided on one side of the connecting strip 72. Specifically, the through groove can be a rectangular groove, a circular groove, a dovetail groove, or a trapezoidal groove. The other side of the connecting strip 72 is directly fixed to the outer edge of the movable steel mesh 70. With this solution, the assembly strip 71 and the connecting strip 72 can be detachably connected. Specifically, the assembly strip 71 can be recycled and reused. The assembly strip 71 and connecting strip 72 are arranged side by side on the outer edge of the movable steel mesh 70, and their ends are connected to the corner of the outer edge of the movable steel mesh 70 by connecting angle 73, which serves as a connection on the one hand and as a plug at the end of the through groove on the other.

[0089] Example 4

[0090] Compared to Embodiment 2, this embodiment also includes the following differences: the second pneumatic component 60 includes a movable cavity 53, a second piston 64, and a column 65. The movable cavity 53 is disposed within the corner connector 50. The second piston 64 is slidably fitted into the movable cavity 53. The inner end of the column 65 is fixed to the second piston 64. A sealing plate is provided at the opening of the movable cavity 53. The second return spring 63 is sleeved on the column 65. The two ends of the second return spring 63 abut against the sealing plate and the second piston 64, respectively. The third air port 61 is disposed at the bottom of the movable cavity 53.

[0091] The second piston 64 is provided with an inner cavity 641, which communicates with the inner end face of the second piston 64. A locking port 642 communicating with the inner cavity 641 is provided on the side wall of the second piston 64. A spring pin 66 is provided on the side wall of the movable cavity 53 corresponding to the locking port 642. When the second piston 64 moves to the innermost end of the movable cavity 53, the spring pin 66 slides outward and engages with the locking port 642, thereby locking the second piston 64 in the inner end of the movable cavity 53 and preventing external extreme pulling from pushing the second piston 64 out through the support column. When the air chamber is filled with air, since the inner cavity 641 is connected to the movable cavity 53, the high-pressure air will pass through the locking port 642 and onto the outer end face of the spring pin 66, pushing the spring pin 66 out of the locking port 642, thus unlocking the second piston 64. Afterward, the high-pressure air pushes the second piston 64 to slide outward normally, and the support column lifts the pressure plate 40. It is important to note that the cross-sectional area of ​​the lock 642 and the second piston 64 needs to be larger to increase the pressure of the internal high-pressure air, so that the spring pin 66 can be smoothly pushed out of the lock 642. In order to better push out the spring pin 66, the distance from the spring pin 66 to the lock 642 should not be too long.

[0092] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0093] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A frame for fixing a movable steel mesh, characterized in that, include: A frame (10) has an installation cavity (11) inside, and an avoidance opening (12) is provided at the top of the installation cavity (11); Tensioner (20), the tensioner (20) includes a body (21) and a hook (22), the body (21) is movably installed in the mounting cavity (11), and the hook (22) extends from the clearance opening (12) to the outside of the frame (10); The first pneumatic component (30) is disposed in the mounting cavity (11). The output end of the first pneumatic component (30) is connected to the main body (21). The first pneumatic component (30) drives the hook (22) to move through the main body (21) to generate or release tension.

2. The frame for fixing a movable steel mesh according to claim 1, characterized in that: The main body (21) includes an abutment part (211) and a sliding part (212). The abutment part (211) is connected to the output end of the pneumatic component. The sliding part (212) is provided corresponding to the clearance opening (12). The sliding part (212) slides and engages with the inner wall of the mounting cavity (11). The sliding part (212) is fixed to the end of the abutment part (211).

3. The frame for fixing a movable steel mesh according to claim 2, characterized in that: The first pneumatic component (30) includes a cylinder (36), a first piston (34), a push rod (35), and a first return spring (33). The first piston (34) is slidably fitted inside the cylinder (36). The inner end of the push rod (35) is fixed to the first piston (34). The push rod (35) extends slidably from the cylinder port of the cylinder (36) to the outside. A first air port (31) is provided at one end of the cylinder (36) near the cylinder port. The first return spring (33) is located between the first piston (34) and the cylinder port. A second air port (32) is provided at the bottom of the cylinder (36).

4. The frame for fixing a movable steel mesh according to claim 3, characterized in that: Each tensioning member (20) is provided with a plurality of first pneumatic members (30) arranged in parallel. Each first air port (31) is connected to the corresponding air source through a first air passage (13), and each second air port (32) is connected to the corresponding air source through a second air passage (14).

5. A frame for fixing a movable steel mesh according to claim 4, characterized in that: The outer wall of the frame is fixed with reinforcing beams (74) in parallel.

6. A frame for fixing a movable steel mesh, characterized in that: A frame for fixing a movable steel mesh according to claim 5 includes four corner connectors (50) and four frame edges, wherein the corner connectors (50) and the frame edges are alternately connected to form a rectangle.

7. A frame for fixing a movable steel mesh according to claim 6, characterized in that: The corner connector (50) is provided with a third air passage (51) and a fourth air passage (52). The two ends of the third air passage (51) are respectively connected to the first air passage (13). The first air passage (13) or the third air passage (51) is provided with at least a first air nozzle, which is connected to a corresponding air source. The two ends of the fourth air passage (52) are respectively connected to the second air passage (14). The second air passage (14) or the fourth air passage (52) is provided with at least a second air nozzle, which is connected to a corresponding air source.

8. A frame for fixing a movable steel mesh according to claim 7, characterized in that: The corner connector (50) is provided with a second pneumatic component (60). The output end of the second pneumatic component (60) is positioned above the corner connector (50). The output ends of adjacent second pneumatic components (60) are connected by a pressure plate (40). The pressure plate (40) is used to press the movable steel mesh (70). The pressure plate (40) is positioned above the hook (22). When the first pneumatic component (30) drives the hook (22) to generate tension, the second pneumatic component (60) drives the pressure plate (40) to press downward.

9. A frame for fixing a movable steel mesh according to claim 8, characterized in that: The bottom of the second pneumatic component (60) is provided with a third air port (61), which is connected to the second air passage (14) through the fifth air passage (62). A second return spring (63) is provided in the half cavity opposite to the third air port (61).

10. A frame for fixing a movable steel mesh according to claim 9, characterized in that: The second pneumatic component (60) includes a movable cavity (53), a second piston (64), and a column (65). The movable cavity (53) is disposed inside the corner connector (50). The second piston (64) is slidably fitted into the movable cavity (53). The inner end of the column (65) is fixed to the second piston (64). A sealing plate is provided at the opening of the movable cavity (53). The second return spring (63) is sleeved on the column (65). The two ends of the second return spring (63) abut against the sealing plate and the second piston (64) respectively. The third air port (61) is disposed at the bottom of the movable cavity (53).

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