A steel mesh mounting and fixing assembly facilitating steel mesh replacement

Abstract

The utility model discloses a steel net installation fixed subassembly convenient to steel net replacement, including installation frame, lift pressure assembly, hook arm tensioning subassembly, the installation frame is square frame, and the middle part is equipped with the cavity, the installation frame includes the border, and the corner code subassembly is connected fixed through the corner code subassembly to the adjacent border, the border middle part is equipped with the installation cavity, the hook arm tensioning subassembly is located in the installation cavity, and its lower end passes out the accommodation slot of the border lower surface, the top of lift pressure assembly is located in the installation cavity, and its bottom is located in the lower surface of installation frame, the utility model discloses a steel net installation fixed subassembly convenient to steel net replacement is through the pressure structure, tensioning structure to steel net and is taut and is positioned when using, when steel net needs replacement, through the pressure structure, tensioning structure of pneumatic drive can quickly remove the fixed position of steel net, to this convenient replacement steel net, after replacing steel net, the pressure structure, tensioning structure reset pressure tight, tensioning steel net.

Description

Technical Field

[0001] This utility model relates to the field of surface mount technology, and in particular to a steel mesh installation and fixing component that facilitates steel mesh replacement. Background Technology

[0002] SMT (Surface Mount Technology), also known as surface mount technology, is currently the most popular technology and process in the electronics assembly industry. It is a circuit assembly technology that mounts leadless or short-lead surface mount components onto the surface of a printed circuit board or other substrate, and then assembles them using methods such as reflow soldering or dip soldering. The core of SMT processing lies in using a stencil with pre-set mesh for solder paste printing.

[0003] With the advocacy and development of environmental protection concepts, the steel mesh used for printing has gradually evolved from the early fixed integrated structure to movable steel mesh that can be moved and replaced.

[0004] Traditional SMT stencil fixing methods are usually:

[0005] 1. Traditionally, the aluminum frame is welded in one piece, the nylon mesh is stretched with glue to achieve tension, and then the steel sheet is glued on.

[0006] 2. Insert the steel mesh into the frame on the work platform, and then fix the outer edge of the steel mesh with several bolts. Although this threaded connection method is relatively stable, when replacing the steel mesh, it is necessary to remove several bolts on both sides of the frame in sequence to disassemble the steel mesh, and then screw the bolts in again during installation. The operation process is cumbersome, time-consuming, and seriously affects work efficiency. Utility Model Content

[0007] The purpose of this utility model is to provide a steel mesh installation and fixing component that facilitates steel mesh replacement. Its structural design is simple and reasonable. During use, the steel mesh is tightened and limited by the clamping structure and the tensioning structure. When the steel mesh is damaged or needs to be replaced due to other circumstances, the clamping structure and the tensioning structure can be quickly released from the fixed limit of the steel mesh by air pressure, thus facilitating the replacement of the steel mesh. After the steel mesh is replaced, the clamping structure and the tensioning structure reset to clamp and tension the steel mesh.

[0008] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0009] A steel mesh installation and fixing assembly that facilitates steel mesh replacement includes an installation frame, a lifting and pressing assembly, and a hook arm tensioning assembly;

[0010] The mounting frame is a square frame with a cavity in the middle; the mounting frame includes a frame and corner brackets, the frame consists of four pieces located on the four sides, and adjacent frames are connected and fixed by corner brackets.

[0011] The frame has a mounting cavity in the middle; the hook arm tensioning assembly is located inside the mounting cavity, and its lower end protrudes through the clearance groove on the lower surface of the frame.

[0012] The top end of the lifting and pressing assembly is located inside the mounting cavity, and its bottom end is located on the lower surface of the mounting frame.

[0013] The corner code assembly includes an air inlet and outlet, a first flow channel, a second flow channel, and a lifting air chamber. The air inlet and outlet are respectively connected to the first flow channel and the second flow channel.

[0014] The lifting and pressing assembly includes a lifting frame, a piston rod, and a return spring. The lifting frame is horizontally positioned, with the piston rod connected vertically at its four corners. The top of the piston rod is inserted into the lifting air chamber, fitting tightly against the inner wall of the chamber. When high-pressure gas is injected into the lifting air chamber through the flow channel, it pushes the piston rod downward, thereby pushing the lifting frame downward. As the lifting frame moves downward, the pressure on the steel mesh is released. When the lifting air chamber is vented or at normal pressure, the piston rod is pushed upward by the spring force of the return spring (in a compressed state), causing the lifting frame to move upward and press against the lower surface of the mounting frame. The return spring is sleeved on the outer wall of the piston rod, with its upper and lower ends respectively fitting against the piston rod and the mounting frame.

[0015] The hook arm tensioning assembly includes a pry bar hook arm, a second return spring, and a push piston. A piston air chamber is provided within the frame. The push piston is located within the piston air chamber, movably connected to the piston air chamber, and sealed against the inner wall of the piston air chamber. An air inlet is provided at the top of the piston air chamber, with its two ends connected to the second flow channel and the piston air chamber, respectively.

[0016] The frame also has a shaft cavity inside;

[0017] The pry bar hook arm includes a pry bar, a rotating shaft, a hook arm, and a reset spring mounting hole slot. The two ends of the rotating shaft are respectively connected to the pry bar and the hook arm; the pry bar, rotating shaft, and hook arm are integrally formed.

[0018] The pry bar hook arm is located in the mounting cavity of the frame, with the top of the pry bar abutting the bottom surface of the top-pushing piston, its rotating shaft located in the shaft cavity, and its hook arm located in the clearance groove.

[0019] The bottom of the mounting cavity of the frame is provided with a reset spring mounting hole groove; the upper and lower ends of the reset spring two are respectively located in the reset spring mounting hole groove of the pry bar hook arm and the reset spring mounting hole groove of the frame.

[0020] When high-pressure gas flows into the piston chamber through flow channel two, the gas pushes the push piston downward, which in turn presses down the pry bar. The rotating shaft rotates within the shaft cavity, causing the hook arm to swing upward and retract. The retracted hook arm releases the tension on the steel mesh. When the piston chamber exhausts, releases gas, or returns to normal pressure, the pry bar hook arm returns to its working tension state under the elastic force of return spring two.

[0021] Only when replacing the steel mesh is high-pressure airflow injected into the air inlet and outlet ports to provide power to the lifting and pressing assembly and the hook arm tensioning assembly, causing the lifting frame to move down and the hook arm to retract, making it easy to remove and replace the steel mesh; after replacing the steel mesh, the air is vented and the pressure is released, and the lifting and pressing assembly and the hook arm tensioning assembly are pressed and tensioned by the return spring and the second return spring, restoring the steel mesh to its working state.

[0022] The beneficial effects of this utility model are:

[0023] Its structural design is simple and reasonable. During use, the steel mesh is tightened and limited by the pressing structure and the tensioning structure. When the steel mesh is damaged or needs to be replaced due to other reasons, the pressing structure and the tensioning structure can be quickly released from the fixed limit of the steel mesh by air pressure, so as to facilitate the replacement of the steel mesh. After the steel mesh is replaced, the pressing structure and the tensioning structure reset to press and tension the steel mesh. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a steel mesh installation and fixing component that facilitates steel mesh replacement according to the present invention.

[0025] Figure 2 This is a bottom view of a steel mesh installation and fixing component that facilitates steel mesh replacement according to the present invention.

[0026] Figure 3 This is a front view of a steel mesh installation and fixing component that facilitates steel mesh replacement according to this utility model.

[0027] Figure 4 for Figure 3 A cross-sectional view along the AA direction;

[0028] Figure 5 for Figure 4 Enlarged view on the right (after rotation);

[0029] Figure 6 for Figure 3 Cross-sectional view along the BB direction;

[0030] Figure 7 for Figure 6 Enlarged view on the right;

[0031] Figure 8 for Figure 7 A schematic diagram of the structure after rotating upwards by an angle;

[0032] Figure 9 This is a schematic diagram of the lifting and pressing assembly. Detailed Implementation

[0033] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0034] like Figures 1-9 As shown, a steel mesh installation and fixing assembly for easy steel mesh replacement includes an installation frame 1, a lifting and pressing assembly 2, and a hook arm tensioning assembly 3.

[0035] The mounting frame 1 is a square frame with a cavity in the middle; the mounting frame 1 includes a frame 11 and corner bracket components 12. The frame 11 consists of four pieces, which are located on the four sides. Adjacent frames 11 are connected and fixed by corner bracket components 12.

[0036] The frame 11 has a mounting cavity 10 in the middle; the hook arm tensioning assembly 3 is located inside the mounting cavity 10, and its lower end protrudes through the clearance groove 13 on the lower surface of the frame 11.

[0037] The top end of the lifting and pressing assembly 2 is located inside the mounting cavity 10, and its bottom end is located on the lower surface of the mounting frame 1.

[0038] The corner code assembly 12 includes an air inlet / outlet port 14, a first flow channel, a second flow channel, and a lifting air chamber 24. The air inlet / outlet port 14 is connected to the first flow channel and the second flow channel, respectively.

[0039] The lifting and pressing assembly 2 includes a lifting and pressing frame 21, a piston rod 22, and a return spring 20 (e.g., Figure 9 (As shown); the lifting pressure frame 21 is horizontally positioned, with vertically positioned piston rods 22 connected to its four corners. The top of the piston rod 22 is inserted into the lifting air chamber 24, fitting tightly against the inner wall of the chamber. When high-pressure gas is injected into the lifting air chamber 24 through the flow channel, it pushes the piston rod 22 downward, thereby pushing the lifting pressure frame 21 downward. When the lifting pressure frame 21 moves downward, it releases the pressure on the steel mesh. When the lifting air chamber 24 is under exhaust or normal pressure, the piston rod 22 is pushed upward by the elastic force of the return spring 20 (in a compressed state), causing the lifting pressure frame 21 to move upward and press tightly against the lower surface of the mounting frame 1. The return spring 20 is sleeved on the outer wall of the piston rod 22, with its upper and lower ends fitting against the piston rod 22 and the mounting frame 1, respectively. The lifting air chamber 24 is connected to the flow channel.

[0040] The hook arm tensioning assembly 3 includes a pry bar hook arm 31, a second return spring (not shown in the figure), and a push piston 33. A piston air chamber 15 is provided within the frame 11. The push piston 33 is located within the piston air chamber 15, movably connected to the piston air chamber 15, and sealed against the inner wall of the piston air chamber 15. An air inlet 150 is provided at the top of the piston air chamber 15, with both ends of the air inlet 150 connected to the second flow channel and the piston air chamber 15, respectively.

[0041] The frame 11 is also provided with a shaft cavity 16;

[0042] The pry bar hook arm 31 includes a pry bar 311, a rotating shaft 312, a hook arm 313, and a reset spring mounting hole 314. The two ends of the rotating shaft 312 are respectively connected to the pry bar 311 and the hook arm 313; the pry bar 311, the rotating shaft 312, and the hook arm 313 are integrally formed.

[0043] The pry bar hook arm 31 is located in the mounting cavity 10 of the frame 11. The top of the pry bar 311 is attached to the bottom surface of the top push piston 33. The rotating shaft 312 is located in the shaft cavity 16, and the hook arm 313 is located in the relief groove 13.

[0044] The top of the mounting cavity 10 of the frame 11 is provided with a reset spring mounting hole 314; the upper and lower ends of the reset spring 2 are respectively located in the reset spring mounting hole 314 of the pry bar hook arm 31 and the reset spring mounting hole 314 of the frame 11.

[0045] When high-pressure gas is injected into the piston chamber 15 through the flow channel 2, the gas pushes the push piston 33 downward, which in turn causes the pry bar 311 to press down. The rotating shaft 312 rotates in the shaft cavity 16, which in turn causes the hook arm 313 to swing upward and retract, releasing the tension on the steel mesh. When the piston chamber 15 is venting, releasing gas, or at normal pressure, the pry bar hook arm 31 returns to its working tension state under the elastic force of the return spring 2.

[0046] Only when the steel mesh is replaced, the air source (air pump) injects high-pressure airflow into the air inlet and outlet 14, and at the same time provides power to the lifting and pressing assembly 2 and the hook arm tensioning assembly 3, so that the lifting and pressing frame 21 moves down and the hook arm 313 retracts, making it easy to remove and replace the steel mesh; after the steel mesh is replaced, the air is vented and the pressure is released, and the lifting and pressing assembly 2 and the hook arm tensioning assembly 3 are pressed and tensioned by the return spring and the second return spring, restoring the steel mesh to the working state.

[0047] Preferably, in order to ensure that the force on the pry bar hook arm 31 is uniform, the push piston 33 and piston air chamber 15 are in several groups and are evenly distributed on the top of the pry bar 311.

[0048] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and alterations to these embodiments without departing from the principles and spirit of this utility model will still fall within the protection scope of this utility model.

Claims

1. A steel mesh installation and fixing component that facilitates steel mesh replacement, characterized in that: Includes mounting frame, lifting and clamping assembly, and hook arm tensioning assembly; The mounting frame is a square frame with a cavity in the middle; the mounting frame includes a frame and corner brackets, the frame consists of four pieces located on the four sides, and adjacent frames are connected and fixed by corner brackets. The frame has a mounting cavity in the middle; the hook arm tensioning assembly is located inside the mounting cavity, and its lower end protrudes through the clearance groove on the lower surface of the frame. The top end of the lifting and pressing assembly is located inside the mounting cavity, and its bottom end is located on the lower surface of the mounting frame.

2. The steel mesh installation and fixing assembly for easy steel mesh replacement according to claim 1, characterized in that: The corner code assembly includes an air inlet and outlet, a first flow channel, a second flow channel, and a lifting air chamber. The air inlet and outlet are respectively connected to the first flow channel and the second flow channel.

3. The steel mesh installation and fixing assembly for easy steel mesh replacement according to claim 2, characterized in that: The lifting and pressing assembly includes a lifting frame, a piston rod, and a return spring; the lifting frame is horizontally arranged, and the piston rod is vertically arranged at its four corners; the top of the piston rod is inserted into the lifting air chamber and fits tightly against the inner wall of the lifting air chamber; the return spring is sleeved on the outer wall of the piston rod, and its upper and lower ends fit against the piston rod and the mounting frame, respectively. The rising and falling air chambers are connected to the flow channels.

4. The steel mesh installation and fixing assembly for easy steel mesh replacement according to claim 2 or 3, characterized in that: The hook arm tensioning assembly includes a pry bar hook arm, a return spring, and a push piston; a piston air chamber is provided inside the frame; the push piston is located inside the piston air chamber, is movably connected to the piston air chamber, and is sealed and fitted to the inner wall of the piston air chamber. The piston chamber is equipped with an air inlet at the top, and the two ends of the air inlet are connected to the flow channel 2 and the piston chamber, respectively.

5. The steel mesh installation and fixing assembly for easy steel mesh replacement according to claim 4, characterized in that: The frame also has a shaft cavity inside; The pry bar hook arm includes a pry bar, a rotating shaft, a hook arm, and a reset spring mounting hole slot. The two ends of the rotating shaft are respectively connected to the pry bar and the hook arm; the pry bar, rotating shaft, and hook arm are integrally formed. The pry bar hook arm is located in the mounting cavity of the frame, with the top of the pry bar abutting the bottom surface of the top-pushing piston, its rotating shaft located in the shaft cavity, and its hook arm located in the clearance groove.

6. The steel mesh installation and fixing assembly for easy steel mesh replacement according to claim 5, characterized in that: The bottom of the mounting cavity of the frame is provided with a reset spring mounting hole groove; the upper and lower ends of the reset spring two are respectively located in the reset spring mounting hole groove of the pry bar hook arm and the reset spring mounting hole groove of the frame.

7. The steel mesh installation and fixing assembly for easy steel mesh replacement according to claim 4, characterized in that: The push piston and piston air chamber are in several groups.

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