Screen stretching frame for silk-screen printing

Abstract

The utility model relates to a screen stretching frame for silk-screen printing. The screen stretching frame comprises a screen frame body, a first screen fixing assembly and a handle assembly. A mounting groove is formed in the screen frame main body. The first screen fixing assembly is movably contained in the mounting groove and used for fixing a screen. The handle assembly comprises a handle and a pull rod, the first end of the pull rod is connected with the handle, the second end of the pull rod penetrates through the screen frame body and is connected with the first screen fixing assembly, and the first end is opposite to the second end. The handle is arranged on the side face of the screen frame body and can eccentrically rotate relative to the screen frame body under the action of external force so as to drive the first screen fixing assembly to move in the installation groove in the direction away from the center of the screen frame body, and the screen is tightened. The screen stretching frame for silk-screen printing is simple in structure and low in manufacturing cost. Due to the fact that tensioning of the silk screen is achieved through eccentric rotation of the handle, the silk screen tensioning speed is high, and the silk screen tensioning effect is good. A heavy stretching machine is not needed in the whole stretching process, so that the input cost is greatly saved.

Description

Technical Field

[0001] The utility model relates to the technical field of screen printing, and particularly relates to a screen printing frame for stretching a screen. Background Art

[0002] The screen printing process is widely used in people's production and life. During the screen printing process, the screen needs to maintain a certain tension to ensure the printing effect.

[0003] In the related art, the screen stretching methods usually include two forms: machine stretching and manual stretching. Machine stretching is mainly carried out by a stretching machine, and then the screen is fixed on the frame by gluing. Machine stretching requires large equipment to complete screen stretching, resulting in high production costs. Manual stretching is carried out by manually pulling the screen, which requires a high level of proficiency for the screen stretcher and is difficult to ensure the stretching effect. Summary of the Utility Model

[0004] An object of the utility model is to solve the deficiencies in the prior art, and to provide a screen printing frame for stretching a screen with convenient stretching operation and low cost. To solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A screen printing frame for stretching a screen, comprising:

[0006] A frame body, provided with an installation groove;

[0007] A first screen fixing assembly, movably accommodated in the installation groove, and the first screen fixing assembly is used for fixing the screen; and

[0008] A handle assembly, comprising a handle and a pull rod, the first end of the pull rod is connected to the handle, the second end of the pull rod penetrates through the frame body and is connected to the first screen fixing assembly, the first end and the second end are opposite to each other, the handle is arranged on the frame body and can eccentrically rotate relative to the frame body under the action of an external force to drive the first screen fixing assembly to move in the installation groove in a direction away from the center of the frame body, so as to stretch the screen.

[0009] In one embodiment, the handle assembly includes a rotating shaft, the handle is provided with a rotating hole, the axial direction of the rotating hole is perpendicular to the axial direction of the pull rod, the rotating shaft is arranged in the rotating hole, and the first end of the pull rod is hinged to the rotating shaft.

[0010] In one embodiment, the handle includes a wheel seat portion and a handle portion, the rotating hole is eccentrically arranged in the wheel seat portion, and the handle portion is connected to the wheel seat portion; and / or,

[0011] The second end of the pull rod is threadedly connected to the first screen fixing assembly.

[0012] In one embodiment, the handle assembly further includes a fixing base fixed on the outer surface of the screen frame body. The handle is rotatably mounted on the fixing base. The fixing base is provided with a perforation, and the first end of the pull rod passes through the perforation and is hinged to the handle; and / or,

[0013] The screen printing screen frame further includes an elastic member disposed between the groove wall of the installation groove and the first screen fixing assembly. When the elastic member is compressed, it can provide an elastic force towards the inside of the screen frame body to the first screen fixing assembly; and / or,

[0014] The screen printing screen frame further includes a fixing member connected to one side of the screen frame body, so that the screen printing screen frame is fixed to the screen printing main machine through the fixing member.

[0015] In one embodiment, the first screen fixing assembly includes a movable screen frame and a screen pressing strip. The movable screen frame is movably disposed in the installation groove, and the screen pressing strip is detachably disposed on the movable screen frame for pressing and fixing the screen on the movable screen frame.

[0016] In one embodiment, the movable screen frame is provided with a screen pressing groove, and the screen pressing strip is engaged in the screen pressing groove to press and fix the screen on the movable screen frame.

[0017] In one embodiment, the cross section of the screen pressing groove is arc-shaped, and the width of the notch of the screen pressing groove is smaller than the radial dimension of the screen pressing groove;

[0018] The screen pressing strip includes a main body and an extension portion connected to the main body. At least part of the main body is cylindrical, and the radial dimension of the main body matches the radial dimension of the screen pressing groove. The main body is rotatably mounted in the screen pressing groove.

[0019] In one embodiment, the circumferential surface of the main body has a recessed portion, and the radial dimension of the main body at the recessed portion is smaller than the width of the notch of the screen pressing groove.

[0020] In one embodiment, the screen printing screen frame further includes a second screen fixing assembly fixedly mounted in the installation groove. The second screen fixing assembly and the first screen fixing assembly are respectively used to fix different ends of the screen.

[0021] In one embodiment, the screen frame body includes four installation grooves that enclose a rectangle. The number of the first screen fixing assemblies is three, and the number of the second screen fixing assemblies is one. The three first screen fixing assemblies and one second screen fixing assembly are respectively and correspondingly disposed in the four installation grooves; and / or,

[0022] Two handle assemblies are connected to the first screen fixing assembly, and the two handle assemblies are respectively close to both ends of the first screen fixing assembly.

[0023] It can be seen from the above technical solutions that the present utility model has at least the following advantages and positive effects:

[0024] In the present utility model, a screen printing screen stretching frame includes a frame body, a first screen fixing component and a handle component. The first screen fixing component is used for fixing the screen and is movably arranged in the installation groove of the frame body. The handle component includes a handle and a pull rod, and the pull rod connects the handle and the first screen fixing component. The handle is arranged on the frame body and can rotate eccentrically relative to the frame body under the action of an external force, so as to drive the first screen fixing component to move in the installation groove to tighten the screen. This screen printing screen stretching frame has a simple structure and low manufacturing cost. The screen can be tensioned by eccentrically rotating the handle, and its screen stretching speed is relatively fast, the screen stretching effect is good, the operation is relatively simple, and the requirements for the screen stretcher are relatively low. Compared with using a bulky screen stretching machine, the cost is low. Description of the Drawings

[0025] Figure 1 is a schematic structural diagram of a screen printing screen stretching frame according to an embodiment.

[0026] Figure 2 is Figure 1 a schematic diagram of the screen pressing strip being snapped into the screen pressing groove in the structure shown.

[0027] Figure 3 is Figure 2 a schematic diagram of the screen pressing strip being limited and fixed in the screen pressing groove in the structure shown.

[0028] Figure 4 is Figure 1 a schematic diagram of the handle component in the initial state in the structure shown.

[0029] Figure 5 is Figure 4 a schematic diagram of the handle component in the state of screen tensioning in the structure shown.

[0030] Description of the reference numerals is as follows:

[0031] 100 - frame body; 110 - installation groove;

[0032] 200 - first screen fixing component;

[0033] 210 - movable frame; 211 - screen pressing groove;

[0034] 220 - screen pressing strip; 221 - main body; 222 - recessed part; 223 - extension part;

[0035] 300 - second screen fixing component; 310 - fixed frame; 320 - second screen pressing strip;

[0036] 400 - handle component;

[0037] 410 - handle; 411 - wheel seat part; 412 - handle part; 413 - first side; 414 - second side;

[0038] 420 - Tie rod; 430 - Rotating shaft;

[0039] 500 - Fixed seat; 600 - Elastic member; 700 - Fixing member. Detailed implementation manners

[0040] Typical implementation manners reflecting the features and advantages of the present utility model will be described in detail in the following description. It should be understood that the present utility model can have various variations in different implementation manners, all of which do not depart from the scope of the present utility model, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present utility model.

[0041] In the description of the present application, it should be understood that in the embodiments shown in the drawings, the indication of the direction or positional relationship (such as up, down, left, right, front, and back, etc.) is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. When these elements are in the positions shown in the drawings, these descriptions are appropriate. If the description of the positions of these elements changes, then the indication of these directions also changes accordingly.

[0042] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0043] See Figure 1 As shown, the screen printing screen stretching frame of the embodiment of the present application includes a frame body 100, a first screen fixing assembly 200, and a handle assembly 400. The frame body 100 is provided with an installation groove 110. The first screen fixing assembly 200 is movably received in the installation groove 110, and the first screen fixing assembly 200 is used for fixing the screen. The handle assembly 400 includes a handle 410 and a tie rod 420. The first end of the tie rod 420 is connected to the handle 410, and the second end of the tie rod 420 passes through the frame body 100 and is connected to the first screen fixing assembly 200, with the first end and the second end facing away from each other. The handle 410 is provided on the side of the frame body 100 and can rotate eccentrically relative to the frame body 100 under the action of an external force to drive the first screen fixing assembly 200 to move in the installation groove 110 in a direction away from the center of the frame body 100, so as to stretch the screen. This screen printing screen stretching frame has a simple structure and low manufacturing cost. Since the screen is tensioned by eccentrically rotating the handle 410, its screen stretching speed is relatively fast, the screen stretching effect is good, and the requirements for the screen stretcher are relatively low. Compared with using a bulky screen stretching machine, the cost is low.

[0044] Among them, the frame body 100 can be generally rectangular in shape. For example, the frame body 100 includes four side frames connected end to end in sequence, and the four side frames enclose a rectangular frame body 100. Each side frame is provided with an installation groove 110, and the installation grooves 110 can be interconnected or not interconnected. That is to say, the frame body 100 can include four installation grooves 110, and the four installation grooves 110 enclose to form a rectangle.

[0045] In other embodiments, the frame body 100 can also be a circular frame or an oval frame surrounded by more than two side frames, etc.; or the frame body 100 can also be other regular or irregular shapes.

[0046] The material of the frame body 100 can be plastic, wood, aluminum, steel, etc., and this application does not make any limitations in this regard.

[0047] Among them, the number of the first net-fixing components 200 can be four, and the four first net-fixing components 200 are respectively received in the installation grooves 110 of the four side frames. When stretching the net, the four first net-fixing components 200 can be pulled to move away from the center of the frame body 100 in the four installation grooves 110 respectively, so as to tighten the wire mesh from four directions.

[0048] Or, as Figure 1 shown, the number of the first net-fixing components 200 can be three, and the three first net-fixing components 200 are respectively received in three of the installation grooves 110 of the frame body 100. And, on the remaining side frame of the frame body 100, a net-fixing structure can be provided, and the net-fixing structure can be fixedly connected to the side frame of the frame body 100. The wire mesh is fixed on the net-fixing structure. When stretching the net, the three first net-fixing components 200 can be pulled to move away from the center of the frame body 100 in the three installation grooves 110 respectively, so as to tighten the wire mesh.

[0049] Refer to Figure 1 shown, in an embodiment, the wire mesh printing stretching frame further includes a second net-fixing component 300, and the second net-fixing component 300 is fixedly installed in one of the installation grooves 110. For example, the second net-fixing component 300 can be fixedly connected in the installation groove 110 by screws. Or the second net-fixing component 300 can be fixedly welded in the installation groove 110.

[0050] In this embodiment, the second net-fixing component 300 and the first net-fixing component 200 are respectively used to fix different ends of the wire mesh to better tighten the wire mesh. Specifically, as Figure 1As shown, the number of the first fixed network components 200 is three, and the number of the second fixed network components 300 is one. The three first fixed network components 200 and one second fixed network component 300 are respectively disposed in four mounting grooves 110 one by one. The three first fixed network components 200 and one second fixed network component 300 respectively fix four sides of the wire mesh.

[0051] For the convenience of description, it is stipulated that the side facing the center of the frame body 100 is the inner side, and the opposite side is the outer side. Thus, in the wire mesh printing frame stretching device of the present embodiment, each side of the wire mesh is respectively fixed on the first fixed network component 200 and the second fixed network component 300, and then the first fixed network component 200 is driven by the handle assembly 400 to move outwards respectively to realize the tensioning of the wire mesh.

[0052] That is to say, the process of stretching and tensioning the wire mesh is realized by the first fixed network components 200 on the three side frames moving outwards respectively. During specific implementation, one side of the wire mesh is fixed on the second fixed network component 300, and at this time, the position of this side of the wire mesh is fixed. And the other three edges of the wire mesh are respectively fixed on the first fixed network components 200 of the other three side frames. When stretching the wire mesh, the three first fixed network components 200 are moved outwards through the handle assembly 400, and the purpose of tensioning the wire mesh can be achieved.

[0053] See Figure 1 As shown, preferably, the notch of the mounting groove 110 on each side frame of the frame body 100 can be opened upwards. Among them, the width of the mounting groove 110 can be greater than the width of the first fixed network component 200, so that the first fixed network component 200 can move in the mounting groove 110. By arranging the mounting groove 110 on the frame body 100 to accommodate and set the first fixed network component 200, the overall structure of the frame stretching device is more compact, and at the same time, the movement of the first fixed network component 200 has reliable support and guidance, which is beneficial to improving the effect of stretching the wire mesh.

[0054] Certainly, in other embodiments, the notch of each mounting groove 110 can also face inwards. Or, the notch of each mounting groove 110 is arranged to face outwards.

[0055] In order to facilitate the fixation of the frame stretching device to the screen printing main machine, in a possible implementation manner, the wire mesh printing frame stretching device further includes a fixing member 700, and the fixing member 700 is connected to one side of the frame body 100, so that the wire mesh printing frame stretching device is fixed to the screen printing main machine through the fixing member 700. Among them, the fixing member 700 can be detachably connected to the frame body 100.

[0056] See Figure 1As shown, the fixing member 700 can be in a strip-like structure. The fixing member 700 can be fixedly connected to the frame of the screen frame body 100 provided with the second fixed network component 300 described above. Specifically, the fixing member 700 can adopt various structures capable of realizing detachable fixed connection to be fixed to the frame, such as snap-fastening structures, screw-locking structures, and so on.

[0057] Moreover, the fixing member 700 can also be fixed to the screen printing main machine, so that the screen frame can be fixed to the screen printing main machine through the fixing member 700. After the screen is tensioned by the screen frame, the screen printing main machine can be directly used to perform printing operations on the tensioned screen without repositioning and assembling the screen frame again, thus greatly improving the printing efficiency. For example, the fixing member 700 can be provided with a fixing bayonet to be fixed to the screen printing main machine through the fixing bayonet. Or, the fixing member 700 can also be provided with structures such as fixing holes and fixing blocks to realize fixation with the screen printing main machine.

[0058] See Figure 1 As shown, the first fixed network component 200 includes a movable screen frame 210 and a screen pressing strip 220. The movable screen frame 210 is movably arranged in the installation groove 110. The screen pressing strip 220 is detachably arranged on the movable screen frame 210 and is used to press and fix the screen on the movable screen frame 210. Specifically, the screen pressing strip 220 is mainly used to fix the edge of the screen on the movable screen frame 210. The connection method between the screen pressing strip 220 and the movable screen frame 210 can be: the movable screen frame 210 is provided with a screen pressing groove 211 for clamping the screen pressing strip 220, and the screen pressing strip 220 can be clamped in the screen pressing groove 211 to press and fix the screen on the movable screen frame 210.

[0059] In this example, the screen pressing strip 220 can be fixed on the movable screen frame 210 by means of concave-convex clamping, so that the screen can be fixed on the movable screen frame 210. Specifically, the edge of the screen is wrapped on the outer surface of the circumference of the screen pressing strip 220, and then the screen pressing strip 220 is clamped and pressed into the screen pressing groove 211. At this time, the screen is located between the outer surface of the screen pressing strip 220 and the inner surface of the screen pressing groove 211. Thus, the cooperation between the screen pressing strip 220 and the screen pressing groove 211 can realize pressing and fixing the edge of the screen on the movable screen frame 210. This fixing method is simple and easy to operate, making the fixing or detachment operation of the screen relative to the movable screen frame 210 more convenient and fast, thus effectively improving the screen tensioning efficiency.

[0060] As Figure 2 and Figure 3 shown, preferably, the cross-section of the screen pressing groove 211 is arc-shaped, and the width of the notch of the screen pressing groove 211 is smaller than the radial dimension of the screen pressing groove 211. The screen pressing strip 220 includes a cylindrical main body 221, and the radial dimension of the main body 221 matches the radial dimension of the screen pressing groove 211. The main body 221 is rotatably installed in the screen pressing groove 211.

[0061] In this example, the radial dimension of the main body 221 and the radial dimension of the mesh pressing groove 211 can be equal. When the main body 221 is snapped into the mesh pressing groove 211, the outer peripheral surface of the main body 221 fits against the concave surface of the mesh pressing groove 211, so that the main body 221 is tightly snapped into the mesh pressing groove 211. Since the width of the notch of the mesh pressing groove 211 is smaller than the radial dimension of the mesh pressing groove 211, the radial dimension of the main body 221 will be larger than the width dimension of the notch of the mesh pressing groove 211. Due to the relatively small design of the width of the notch of the mesh pressing groove 211, the mesh pressing strip 220 snapped into the mesh pressing groove 211 is not easily disengaged from the notch. Thus, it is ensured that the mesh pressing strip 220 can reliably press and fix the wire mesh on the movable mesh frame 210, avoiding the phenomenon that the wire mesh is prone to loosening during the stretching process.

[0062] Of course, in other embodiments, the cross-section of the mesh pressing groove 211 can also be U-shaped, triangular, or polygonal, etc. And the cross-sectional shape of the main body 221 of the mesh pressing strip 220 can also be U-shaped, triangular, or polygonal, etc.

[0063] Considering the smoothness and ease of operation of snapping the mesh pressing strip 220 into the mesh pressing groove 211, as Figure 2 shown, in one embodiment, the circumferential surface of the main body 221 has a recessed portion 222, and the radial dimension of the main body 221 at the recessed portion 222 is smaller than the width of the notch of the mesh pressing groove 211. Thus, by providing the recessed portion 222, the main body 221 can smoothly pass through the notch of the mesh pressing groove 211 and be snapped into the mesh pressing groove 211.

[0064] Specifically, since a recessed portion 222 is designed on one side of the circumferential surface of the main body 221, the radial dimension of the main body 221 corresponding to the recessed portion 222 is relatively small. For example, the radial dimension of the main body 221 corresponding to the recessed portion 222 can be smaller than the width of the notch of the mesh pressing groove 211. Therefore, the main body 221 can smoothly pass through the notch with a relatively small width and be snapped into the mesh pressing groove 211. See specifically Figure 2 shown.

[0065] Moreover, as Figure 3 shown, since the part of the main body 221 other than the recessed portion 222 fits against the inner wall of the mesh pressing groove 211, the radial dimension of this part is larger than the width dimension of the notch of the mesh pressing groove 211. Therefore, after the main body 221 enters the mesh pressing groove 211 as a whole, rotate the main body 221 by a certain angle in the direction of arrow A, so that the part of the main body 221 with a larger radial dimension is stuck at the notch. At this time, the notch can play a role in preventing the main body 221 from disengaging outward. Thus, the mesh pressing strip 220 can be reliably snapped and limited in the mesh pressing groove 211, ensuring that the wire mesh can be firmly fixed on the movable mesh frame 210.

[0066] When it is necessary to remove the wire mesh, only reverse-rotate the main body 221 so that the recessed portion 222 of the main body 221 approaches the notch, thereby enabling the wire pressing strip 220 to be smoothly removed, and realizing the detachment of the wire mesh from the movable mesh frame 210.

[0067] In other embodiments, the recessed portion 222 may not be designed on the main body 221. Instead, the main body 221 is made of a material with certain elasticity, and the main body 221 and the wire pressing groove 211 are in interference fit. When pressing the wire mesh, wrap the edge of the wire mesh around the circumferential surface of the main body 221, and use the elastic deformation ability of the main body 221 itself to squeeze and snap the main body 221 into the wire pressing groove 211.

[0068] See Figure 2 , the wire pressing strip 220 further includes an extension portion 223 fixedly connected to one circumferential side of the main body 221. By providing the extension portion 223, it is convenient for the operator to grip the wire pressing strip 220. Thus, the whole wire pressing strip 220 can be easily driven to rotate through the extension portion 223 to achieve the purpose of fixing or loosening the wire mesh.

[0069] In the embodiments of the present application, the first wire fixing assembly 200 realizes the fixing of the wire mesh through the movable mesh frame 210 and the wire pressing strip 220. However, the present application is not limited thereto. In other embodiments, the first wire fixing assembly 200 may also be other structures capable of fixing the wire mesh, which can be determined according to specific circumstances.

[0070] See Figure 1 , in the embodiments of the present application, the second wire fixing assembly 300 may include a fixed mesh frame 310 and a second wire pressing strip 320. The fixed mesh frame 310 is fixedly arranged in the installation groove 110. The second wire pressing strip 320 is detachably arranged on the fixed mesh frame 310 and is used to press and fix the wire mesh on the fixed mesh frame 310. Among them, the connection manner between the second wire pressing strip 320 and the fixed mesh frame 310 may be the same as the connection manner between the wire pressing strip 220 and the movable mesh frame 210 in the above text.

[0071] It can be understood that in other embodiments, the second wire fixing assembly 300 may also be other structures capable of fixing the wire mesh, which can be determined according to specific circumstances.

[0072] In the embodiments of the present application, the handle assembly 400 is mainly used to drive the first wire fixing assembly 200 to move in the installation groove 110 in the inner and outer directions to realize the tensioning and relaxation of the wire mesh. As Figure 1As shown, in one embodiment, the handle assembly 400 includes a handle 410 and a pull rod 420. The first end of the pull rod 420 is connected to the handle 410, and the second end of the pull rod 420 passes through the frame body 100 and is connected to the first net-fixing assembly 200, with the first end and the second end facing away from each other. Among them, the handle 410 is an eccentric handle 410, which can eccentrically rotate relative to the frame body 100 under the action of an external force to drive the first net-fixing assembly 200 to move in the inner and outer directions within the installation groove 110. In this embodiment, by the eccentric rotation of the handle 410, the first net-fixing assembly 200 can be driven to move within the installation groove 110 to achieve the tensioning and relaxation of the wire mesh.

[0073] As Figure 1 shown, in one embodiment, the way the first end of the pull rod 420 is connected to the handle 410 can be: the handle assembly 400 includes a rotating shaft 430. The handle 410 is provided with a rotating hole, and the axial direction of the rotating hole is perpendicular to the axial direction of the pull rod 420. The rotating shaft 430 is arranged in the rotating hole, and the first end of the pull rod 420 is hinged to the rotating shaft 430. Among them, the handle 410 includes a wheel seat portion 411, and the rotating hole is eccentrically arranged in the wheel seat portion 411.

[0074] The way the pull rod 420 passes through the frame body 100 can be: a through hole is provided on the outer side wall of the frame body 100, the pull rod 420 passes through the through hole, and the first end of the pull rod 420 is hinged to the wheel seat portion 411 through the rotating shaft 430, and the second end of the pull rod 420 is connected to the first net-fixing assembly 200.

[0075] See Figure 1 , in one embodiment, the way the second end of the pull rod 420 is connected to the first net-fixing assembly 200 can be: the second end of the pull rod 420 is threadedly connected to the first net-fixing assembly 200. By designing the threaded connection between the pull rod 420 and the first net-fixing assembly 200, fine adjustment of the moving distance of the first net-fixing assembly 200 in the inner and outer directions can be achieved, and further fine adjustment of the tension degree of the wire mesh can be achieved.

[0076] In other embodiments, the pull rod 420 can also be connected to the first net-fixing assembly 200 by welding, riveting or gluing, etc., as long as the purpose of driving the first net-fixing assembly 200 to move in the inner and outer directions within the installation groove 110 by the pull rod 420 can be achieved.

[0077] In the embodiments of the present application, the wheel seat portion 411 abuts against the outside of the frame body 100 and can rotate around the rotating shaft 430. Since the rotating hole is eccentrically arranged in the wheel seat portion 411 and the rotating shaft 430 is arranged in the rotating hole, the center of the wheel seat portion 411 is offset from the rotation center where the rotating shaft 430 is located by a certain distance. That is to say, the distances from the rotating shaft 430 to the opposite side circumferential surfaces of the wheel seat portion 411 are not equal.

[0078] For the sake of convenience of description, the circumferential surfaces on the opposite sides of the wheel seat portion 411 are respectively referred to as the first side surface 413 and the second side surface 414. Refer to Figure 4 As shown, the distance from the first side surface 413 to the rotating shaft 430 is significantly greater than the distance from the second side surface 414 to the rotating shaft 430.

[0079] As Figure 4 shown, when the handle assembly 400 is in the initial state, the second side surface 414 of the wheel seat portion 411 abuts against the outer surface of the screen frame main body 100. In combination with Figure 5 As shown, when the wheel seat portion 411 is rotated to rotate around the rotating shaft 430, the second side surface 414 moves away from the screen frame main body 100, and the first side surface 413 abuts against the outer surface of the screen frame main body 100. At this time, the rotating shaft 430 moves outward by a certain distance relative to the screen frame main body 100 compared with the initial state, so that the pull rod 420 can move outward correspondingly following the rotating shaft 430. Furthermore, the first screen fixing assembly 200 can move outward to achieve the tensioning of the wire mesh.

[0080] When the wire mesh needs to be removed after use, rotate the wheel seat portion 411 in the reverse direction so that the first screen fixing assembly 200 can move inward.

[0081] Refer to Figure 4 , in an embodiment, the handle 410 further includes a handle portion 412 fixedly connected to one side of the wheel seat portion 411. By providing the handle portion 412, it is convenient for the operator to grip, so as to facilitate the rotation of the wheel seat portion 411, achieve the purpose of pressing down the handle portion 412 to tighten the wire mesh, and pulling the handle portion 412 in the reverse direction can relax the wire mesh.

[0082] Refer to Figure 1 As shown, the handle assembly 400 further includes a fixing seat 500, and the fixing seat 500 is fixed on the outer surface of the screen frame main body 100. The handle 410 is rotatably mounted on the fixing seat 500. The fixing seat 500 is provided with a through hole, and the first end of the pull rod 420 passes through the through hole and is hinged to the handle 410. Among them, the fixing seat 500 can be made of wear-resistant materials such as nylon and wear-resistant rubber. The fixing seat 500 mainly plays a role in reliably fixing the handle 410 on the outer surface of the screen frame main body 100, and effectively prevents the wear of the wheel seat portion 411 and the screen frame main body 100, so as to be beneficial to extending the service life of the screen printing tensioning frame.

[0083] Refer to Figure 1, In one embodiment, the screen printing frame also includes an elastic member 600. The elastic member 600 is disposed between the wall of the installation groove 110 and the first screen-fixing assembly 200. When the elastic member 600 is compressed, it can provide an elastic force towards the inside of the frame body 100 to the first screen-fixing assembly 200. Among them, the elastic member 600 can be a compression spring, and the compression spring can be disposed in the installation groove 110. One end of the compression spring is connected to the inner wall of the installation groove 110, and the other end abuts against the outer side of the first screen-fixing assembly 200.

[0084] When pressing down the handle portion 412 to move the first screen-fixing assembly 200 outwards, the compression spring accumulates elastic force. When pulling the handle portion 412 in the reverse direction, the first screen-fixing assembly 200 can move inwards quickly under the action of the elastic force of the compression spring to reset quickly. Thus, the first screen-fixing assembly 200 can be quickly reset through the elastic member 600, the screen is loosened, which is convenient for the user to quickly remove the screen.

[0085] In other embodiments, the elastic member 600 can also be a structure such as a shrapnel or a flat spring, as long as it can provide an elastic restoring force for moving the first screen-fixing assembly 200 inwards.

[0086] See Figure 1 , In one embodiment, one or two or more handle assemblies 400 can be provided on the first screen-fixing assembly 200 to achieve the purpose of driving the first screen-fixing assembly 200 to move in the inner and outer directions. For example, two handle assemblies 400 are connected to the first screen-fixing assembly 200, and the two handle assemblies 400 are respectively close to both ends of the first screen-fixing assembly 200. By connecting two handle assemblies 400 at both ends of the first screen-fixing assembly 200 respectively, the acting force for driving the first screen-fixing assembly 200 to move outwards can be made uniform, ensuring the smooth movement of the first screen-fixing assembly 200, and thus making the effect of stretching the screen better.

[0087] Based on the above technical solutions, the screen tensioning process of the screen printing frame of the present application is roughly as follows:

[0088] In the initial state, the screen is laid flat and unfolded, and one side edge of the screen is pressed and fixed on the fixed frame 310 by the second screen pressing strip 320. The remaining three side edges of the screen are respectively pressed and fixed on the corresponding movable frames 210 by three screen pressing strips 220. At this time, the screen is in a stretched and not tensioned state. And in the initial state, for the handle 410 connected to each first screen-fixing assembly 200, the second side surface 414 of the wheel seat portion 411 abuts against the outer surface of the frame body 100.

[0089] Connect and fix the fixing member 700 to the fixed frame 310, and fix the fixing member 700 to the screen printing main machine.

[0090] Operate the handles 410 connected to each of the first fixed network components 200 separately. Specifically, pull the handle part 412 to rotate the wheel seat part 411 around the rotating shaft 430. When the wheel seat part 411 rotates until its first side surface 413 abuts against the outer surface of the screen frame main body 100, the rotating shaft 430 on the wheel seat part 411 moves outward by a certain distance. At the same time, the pull rod 420 moves outward by a certain distance following the movement of the wheel seat part 411, and drives the first fixed network component 200 to move outward by a certain distance. Thus, each of the first fixed network components 200 can move outward under the operation of the corresponding handle component 400, so that the sides of the wire mesh open outward, achieving the purpose of tensioning the wire mesh.

[0091] After a wire mesh is tensioned through the aforementioned screen tensioning process, the screen printing main machine can directly perform printing operations on the wire mesh. After printing is completed, remove the second screen pressing strip 320 from the fixed screen frame 310, and remove each screen pressing strip 220 from the corresponding movable screen frame 210, then the printed wire mesh can be removed. Then, fix the sides of the next wire mesh to the second fixed network component 300 and each of the first fixed network components 200 respectively, and continue the aforementioned screen tensioning operation.

[0092] The screen printing screen tensioning frame according to the embodiment of the present application has at least the following advantages and positive effects:

[0093] The screen printing screen tensioning frame of the present application can be used independently of the screen printing main machine, or can also be fixed on the screen printing main machine for use, with a more flexible usage method and stronger practicability.

[0094] The screen printing screen tensioning frame uses the structural form of the screen frame main body 100, the first fixed network component 200 and the second fixed network component 300 to fix the wire mesh, and drives the first fixed network component 200 to move outward by the eccentric rotation of each handle component 400 to achieve screen tensioning. The overall structure is simple and the manufacturing cost is low. Moreover, the wire mesh is firmly fixed to each fixed network component, and the operation of tensioning the wire mesh is simple. There is no need to use a bulky screen tensioning machine, which greatly saves the input cost.

[0095] By providing the installation groove 110 on the screen frame main body 100 to accommodate and set the first fixed network component 200, the overall structure of the screen tensioning frame is more compact, and at the same time, the movement of the first fixed network component 200 has reliable support and guidance, which is beneficial to improving the screen tensioning effect.

[0096] By designing the structure of the screen pressing groove 211 and cooperating with the screen pressing strip 220, reliable fixation of the wire mesh can be achieved, ensuring that the wire mesh can be firmly fixed on the first fixed network component 200.

[0097] By designing the threaded connection between the pull rod 420 and the first fixed network component 200, fine adjustment of the moving distance of the first fixed network component 200 in the inner and outer directions can be achieved, and further fine adjustment of the screen tensioning degree can be achieved.

[0098] The above embodiments are only illustrative examples of the structure. The structures in each embodiment are not fixedly combined structures. Without structural conflicts, the structures in multiple embodiments can be arbitrarily combined and used.

[0099] Although the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be broadly construed within the spirit and scope defined by the appended claims. Therefore, all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A screen printing frame for stretching a screen, characterized in that, Comprising: A screen frame body provided with an installation groove; A first screen-fixing component movably accommodated in the installation groove, the first screen-fixing component being used for fixing the screen; And A handle component including a handle and a pull rod, a first end of the pull rod being connected to the handle, a second end of the pull rod passing through the screen frame body and being connected to the first screen-fixing component, the first end and the second end being opposite to each other, the handle being arranged on a side surface of the screen frame body and being eccentrically rotatable relative to the screen frame body under an external force to drive the first screen-fixing component to move in the installation groove in a direction away from the center of the screen frame body, so as to tension the screen.

2. The screen printing frame according to claim 1, characterized in that, The handle component includes a rotating shaft, the handle is provided with a rotating hole, an axial direction of the rotating hole is perpendicular to an axial direction of the pull rod, the rotating shaft is arranged in the rotating hole, and the first end of the pull rod is hinged to the rotating shaft.

3. The screen printing frame according to claim 2, characterized in that, The handle includes a wheel seat portion and a handle portion, the rotating hole is eccentrically arranged in the wheel seat portion, and the handle portion is connected to the wheel seat portion; and / or, The second end of the pull rod is threadedly connected to the first screen-fixing component.

4. The screen printing frame according to claim 2, characterized in that, The handle component further includes a fixing seat, the fixing seat is fixed on an outer surface of the screen frame body, the handle is rotatably mounted on the fixing seat, the fixing seat is provided with a through hole, the first end of the pull rod passes through the through hole and is hinged to the handle; and / or, The screen printing screen tensioning frame further includes an elastic member, the elastic member is arranged between a groove wall of the installation groove and the first screen-fixing component, and when the elastic member is compressed, it can provide an elastic force towards the inside of the screen frame body to the first screen-fixing component; and / or, The screen printing screen tensioning frame further includes a fixing member, the fixing member is connected to one side of the screen frame body, so that the screen printing screen tensioning frame is fixed to a screen printing main machine through the fixing member.

5. The screen printing frame according to claim 1, characterized in that, The first screen-fixing component includes a movable screen frame and a screen pressing strip, the movable screen frame is movably arranged in the installation groove, and the screen pressing strip is detachably arranged on the movable screen frame and is used for pressing and fixing the screen on the movable screen frame.

6. The screen printing frame according to claim 5, wherein, The movable screen frame is provided with a screen pressing groove, and the screen pressing strip is clamped in the screen pressing groove to press and fix the screen on the movable screen frame.

7. The screen printing frame according to claim 6, characterized in that, A cross section of the screen pressing groove is arc-shaped, and a width of an opening of the screen pressing groove is smaller than a radial dimension of the screen pressing groove; The screen pressing strip includes a main body and an extension portion connected to the main body, at least part of the main body is cylindrical, a radial dimension of the main body matches a radial dimension of the screen pressing groove, and the main body is rotatably mounted in the screen pressing groove.

8. The screen printing frame according to claim 7, characterized in that, A circumferential surface of the main body has a recessed portion, and a radial dimension of the main body at the recessed portion is smaller than a width of the opening of the screen pressing groove.

9. The screen printing frame according to claim 1, characterized in that, The screen printing screen tensioning frame further includes a second screen-fixing component, the second screen-fixing component is fixedly installed in the installation groove, and the second screen-fixing component and the first screen-fixing component are respectively used for fixing different ends of the screen.

10. The screen printing frame according to claim 9, characterized in that, The frame body includes four mounting grooves, the four mounting grooves enclose to form a rectangle, the number of the first net-fixing components is three, the number of the second net-fixing components is one, and the three first net-fixing components and the one second net-fixing component are respectively and correspondingly arranged in the four mounting grooves; and / or, Two handle components are connected to the first net-fixing component, and the two handle components are respectively close to both ends of the first net-fixing component.

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