Centering mechanism of screen printing plate screen stretching machine

Abstract

The utility model relates to the technical field of silk-screen printing equipment, in particular to a centering mechanism of a silk-screen printing plate stretching machine, which is characterized in that a fixing frame is arranged on the left side of a stretching machine body; the bottom of the fixing frame is connected with the net stretching machine body through a moving mechanism. The movable plate is arranged in the fixed frame; the pressing plate is arranged above the moving plate; the centering screw rod is arranged in the front side wall of the movable plate in a penetrating manner through thread screwing, and the front end of the centering screw rod is arranged on the front side wall of the fixed frame in a penetrating manner through bearing screwing; the limiting square rod is movably inserted into the rear side wall of the movable plate, and the rear end of the limiting square rod is fixed in the fixing frame; the adjusting mechanism is arranged on the right side of the net stretching machine body. Automatic drawing and centering opening of the silk screen are achieved, the centering precision of the silk screen is ensured, manual visual inspection errors are avoided, operation is convenient, and efficiency is high; rapid clamping and position calibration of the silk screen roll are achieved, the flatness of the silk screen is guaranteed, the whole process from pulling out, centering to tensioning of the silk screen is controllable, and the tension uniformity and the pattern precision of the silk screen printing plate are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of screen printing equipment technology, specifically to a centering mechanism for a screen printing stencil sheeting machine. Background Technology

[0002] In the screen printing industry, the manufacturing precision of the screen printing stencil directly affects the printing quality. Traditional screen stretching machines rely primarily on manual adjustment for stencil centering and tension during the stretching process, resulting in low efficiency, inaccurate centering, and easy stencil shift. This leads to uneven stencil tension, pattern deviations, and difficulty in ensuring stencil centering accuracy and flatness. Therefore, a new centering mechanism for screen printing stencil stretching machines is proposed. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings and deficiencies of existing technologies by providing a centering mechanism for a screen printing stencil stretching machine. This mechanism enables automatic pulling out and centering of the screen, ensuring screen centering accuracy, avoiding errors from manual visual inspection, and providing convenient and efficient operation. It also enables rapid clamping and position calibration of the screen roll, ensuring screen flatness. The entire process from pulling out and centering to tensioning is controllable, significantly improving the tension uniformity and graphic accuracy of the screen printing stencil.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: it includes a net-casting machine body;

[0005] It also includes:

[0006] A fixing frame is located on the left side of the tensioning machine body; the bottom of the fixing frame is connected to the tensioning machine body via a moving mechanism.

[0007] A movable plate, wherein the movable plate is disposed within a fixed frame;

[0008] A pressure plate is located above a movable plate; a first limiting rod is fixed to the rear side of the upper surface of the movable plate, and the first limiting rod is movably inserted through the pressure plate; a clamping screw is screwed to the front side of the upper surface of the movable plate through a bearing, and the clamping screw is screwed through the pressure plate through a thread.

[0009] The centering screw is threaded through the front side wall of the movable plate, and the front end of the centering screw is threaded through the front side wall of the fixed frame via a bearing.

[0010] The limiting rod is movably inserted into the rear side wall of the movable plate, and the rear end of the limiting rod is fixed in the fixed frame.

[0011] The adjustment mechanism is located on the right side of the net-setting machine body.

[0012] Preferably, the moving mechanism comprises:

[0013] A mobile motor is fixed to the body of the wire mesh stretching machine via a bracket; the mobile motor is connected to an external power source.

[0014] A movable screw, wherein the movable screw is connected to the output shaft of a movable motor;

[0015] A movable block, wherein the movable block is threadedly fitted onto a movable screw;

[0016] The slide rail is fixed to the rear side wall of the net-stretching machine body; a mounting plate is fixed to the left end of the slide rail, and the left end of the moving screw is screwed to the mounting plate through a bearing.

[0017] The slider is slidably mounted on the slide rail;

[0018] The connecting rods are numerous and are fixed to the bottom of the fixed frame. The connecting rods are connected to the moving block and the slider respectively.

[0019] Preferably, a No. 1 hand screw is fixed to the front end of the centering screw, and the No. 1 hand screw has several No. 1 anti-slip grooves.

[0020] Preferably, two opposing center rods are respectively movably inserted through the left and right sides of the front side wall of the movable plate, and the upper end of the opposing center rods is provided with a scale marking layer, and the opposing center rods are fixed in the fixed frame.

[0021] Preferably, the adjusting mechanism comprises:

[0022] Mounting plate number two, which are fixed to the front and rear right sides of the net-stretching machine body respectively;

[0023] Mounting plate No. 3 is fixed to the middle right side of the body of the net-stretching machine.

[0024] Two adjusting screws are provided, and they are respectively screwed between mounting plate No. 2 and mounting plate No. 3 via bearings.

[0025] The second limiting rod, there are two of them, and they are fixed between the second mounting plate and the third mounting plate respectively;

[0026] The adjustment frame consists of two units, each threadedly connected to the adjustment screw and movably mounted on the second limiting rod; the upper end of the adjustment frame has a groove.

[0027] Preferably, the outer end of the adjusting screw is fixed with a No. 2 hand screw, and the No. 2 hand screw has several No. 2 anti-slip grooves.

[0028] Compared with the prior art, the beneficial effects of this utility model are:

[0029] 1. It enables automatic pulling out and centering of the wire mesh, ensuring the centering accuracy of the wire mesh, avoiding errors from manual visual inspection, and is convenient and efficient to operate;

[0030] 2. Enables rapid clamping and position calibration of the screen roll, ensuring screen flatness. The entire process of screen pulling out, centering, and tensioning is controllable, significantly improving the tension uniformity and graphic accuracy of the screen printing plate. Attached Figure Description

[0031] Figure 1 This is the southwest isometric view of this utility model.

[0032] Figure 2 yes Figure 1 Enlarged view of part A in the image.

[0033] Figure 3 yes Figure 1 Enlarged view of part B in the image.

[0034] Figure 4 yes Figure 1 Enlarged view of section C in the image.

[0035] Figure 5 yes Figure 1 Enlarged view of part D in the image.

[0036] Explanation of reference numerals in the attached drawings: 1. Tensioning machine body; 2. Fixed frame; 3. Moving mechanism; 3-1. Moving motor; 3-2. Moving screw; 3-3. Moving block; 3-4. Slide rail; 3-5. Mounting plate 1; 3-6. Sliding block; 3-7. Connecting rod; 4. Moving plate; 5. Pressure plate; 6. Limiting rod 1; 7. Clamping screw; 8. Centering screw; 9. Hand-tightening rod 1; 9-1. Anti-slip groove 1; 10. Limiting square rod; 11. Centering square rod; 11. Scale marking layer; 12. Adjusting mechanism; 12-1. Mounting plate 2; 12-2. Adjusting screw; 12-3. Hand-tightening rod 2; 12-4. Anti-slip groove 2; 12-5. Limiting rod 2; 12-6. Adjusting frame; 12-7. Detailed Implementation

[0037] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0038] The specific implementation method adopts the following technical solution:

[0039] Please see Figure 1-5 This embodiment includes a net-casting machine body 1;

[0040] It also includes:

[0041] A fixing frame 2 is located on the left side of the tensioning machine body 1; the bottom of the fixing frame 2 is connected to the tensioning machine body 1 via a moving mechanism 3; the moving mechanism 3 includes:

[0042] The mobile motor 3-1 is fixed to the main body 1 of the net-stretching machine via a bracket; the mobile motor 3-1 is connected to an external power source; the specific model of the mobile motor 3-1 is purchased and installed directly from the market according to actual usage requirements.

[0043] The movable screw 3-2 is connected to the output shaft of the movable motor 3-1;

[0044] The movable block 3-3 is threadedly fitted onto the movable screw 3-2;

[0045] The slide rail 3-4 is fixed to the rear side wall of the body 1 of the net-stretching machine by bolts; the left end of the slide rail 3-4 is fixed with a first mounting plate 3-5, and the left end of the moving screw 3-2 is screwed onto the first mounting plate 3-5 by bearings.

[0046] Slider 3-6, wherein slider 3-6 is slidably disposed on slide rail 3-4;

[0047] Connecting rods 3-7, there are several connecting rods 3-7, and they are respectively fixed to the bottom of the fixing frame 2 by bolts. The connecting rods 3-7 are respectively connected to the moving block 3-3 and the slider 3-6;

[0048] The movable plate 4 is disposed within the fixed frame 2;

[0049] Pressure plate 5 is located above movable plate 4; a first limiting rod 6 is fixed to the rear side of the upper surface of movable plate 4 by bolts, and the first limiting rod 6 is movably inserted through pressure plate 5; a clamping screw 7 is screwed to the front side of the upper surface of movable plate 4 through bearings, and the clamping screw 7 is screwed through pressure plate 5 by threads.

[0050] The centering screw 8 is threaded through the front wall of the movable plate 4. The front end of the centering screw 8 is threaded through the front wall of the fixed frame 2 via a bearing and is fixed with a first hand screw 9 by bolts. Several first anti-slip grooves 9-1 are opened on the first hand screw 9.

[0051] The limiting rod 10 is movably inserted into the rear side wall of the movable plate 4, and the rear end of the limiting rod 10 is fixed in the fixing frame 2.

[0052] There are two opposing rods 11, which are respectively movably installed on the left and right sides of the front side wall of the movable plate 4. The upper end of the opposing rod 11 is provided with a scale marking layer 11-1, and the opposing rod 11 is fixed in the fixing frame 2.

[0053] Adjustment mechanism 12, wherein the adjustment mechanism 12 is located on the right side of the net-casting machine body 1; the adjustment mechanism 12 comprises:

[0054] Mounting plate 12-1, there are two mounting plates 12-1, and they are fixed to the front and back of the right side of the net-stretching machine body 1 respectively;

[0055] Mounting plate 12-2 is fixed to the middle right side of the body 1 of the net-stretching machine.

[0056] Adjusting screw 12-3, there are two adjusting screws 12-3, and they are respectively screwed between mounting plate 12-1 and mounting plate 12-2 via bearings. The outer end of the adjusting screw 12-3 is fixed with a second hand screw 12-4, and the second hand screw 12-4 is provided with several second anti-slip grooves 12-5.

[0057] The second limiting rod 12-6, there are two of them, and they are fixed between the second mounting plate 12-1 and the third mounting plate 12-2 respectively;

[0058] Adjustment frame 12-7, there are two adjustment frames 12-7, and they are respectively threaded through the adjustment screw 12-3, and the adjustment frame 12-7 is movably sleeved on the second limiting rod 12-6; the upper end of the adjustment frame 12-7 is provided with a groove.

[0059] When using this utility model, the wire mesh roll is placed on the adjusting frame 12-7;

[0060] Start the moving motor 3-1, causing the moving screw 3-2 to rotate, which in turn moves the moving block 3-3, causing the fixed frame 2 to move to the right, pulling out the screen from the screen roll and placing it on the pressure plate 5. Turn the first hand screw 9 to rotate the centering screw 8, ensuring the pulled-out screen is centered according to the markings on the centering rod 11. Correspondingly, turn the second hand screw 12-4 to rotate the adjusting screw 12-3, causing the two adjusting frames 12-7 to move inward under the action of the second limit rod 12-6, clamping the screen roll and aligning it with the required centering position inside the screen printing machine body 1, making the screen flat. Start the moving motor 3-1 again, causing the fixed frame 2 to move to the left, moving the screen to the left to center and spread it on the screen printing machine body 1, improving the accuracy of the screen printing plate, and proceed to the next operation.

[0061] Compared with the prior art, the beneficial effects of this utility model are:

[0062] 1. The moving screw 3-2 and the moving block 3-3 are driven by the moving motor 3-1, which drives the fixed frame 2 to move left and right, so as to realize the automatic pulling out and centering opening of the wire mesh. The operation is convenient and efficient.

[0063] 2. Set the centering screw 8 and the scale marking layer 11-1, and adjust it in conjunction with the No. 1 hand-tightening screw 9 to ensure the centering accuracy of the wire mesh and avoid errors caused by manual visual inspection;

[0064] 3. The adjusting screw 12-3 is used in conjunction with the second limit rod 12-6. The adjusting frame 12-7 is driven to move inward by the second hand screw 12-4, so as to realize the quick clamping and position calibration of the wire mesh roll and ensure the flatness of the wire mesh.

[0065] 4. The overall mechanism is coordinated and linked, and the entire process of screen printing, from pulling out and centering to tensioning, is controllable, which significantly improves the tension uniformity and graphic accuracy of the screen printing plate.

[0066] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A centering mechanism of a screen printing screen stretcher, comprising a screen stretcher body (1); characterized in that It also comprises: a fixed frame (2) provided on the left side of the screen stretcher body (1); the bottom of the fixed frame (2) is connected with the screen stretcher body (1) through a moving mechanism (3); a moving plate (4) provided in the fixed frame (2); a pressing plate (5) provided above the moving plate (4); a first limiting rod (6) is fixed on the rear side of the upper surface of the moving plate (4) and movably penetrates the pressing plate (5); a pressing screw (7) is rotatably connected with the front side of the upper surface of the moving plate (4) through a bearing and penetrates the pressing plate (5) through a thread; a centering screw (8) penetrates the front side wall of the moving plate (4) through a thread and the front end of the centering screw (8) penetrates the front side wall of the fixed frame (2) through a bearing; a limiting square rod (10) movably penetrates the rear side wall of the moving plate (4) and the rear end of the limiting square rod (10) is fixed in the fixed frame (2); an adjusting mechanism (12) provided on the right side of the screen stretcher body (1).

2. The centering mechanism of a screen printing screen stretcher according to claim 1, characterized in that: The moving mechanism (3) comprises: a moving motor (3-1) fixed on the screen stretcher body (1) through a support; the moving motor (3-1) is connected with an external power supply; a moving screw (3-2) connected with the output shaft of the moving motor (3-1); a moving block (3-3) sleeved on the moving screw (3-2) through a thread; a slide rail (3-4) fixed on the rear side wall of the screen stretcher body (1); the left end of the slide rail (3-4) is fixed with a first mounting plate (3-5) and the left end of the moving screw (3-2) is rotatably connected with the first mounting plate (3-5) through a bearing; a sliding block (3-6) slidably provided on the slide rail (3-4); a plurality of connecting rods (3-7) fixed on the bottom of the fixed frame (2) and respectively connected with the moving block (3-3) and the sliding block (3-6).

3. The centering mechanism of a screen printing screen stretcher according to claim 1, characterized in that: The front end of the centering screw (8) is fixed with a first hand screw (9) and a plurality of first anti-skid grooves (9-1) are formed in the first hand screw (9).

4. The centering mechanism of a screen printing screen stretcher according to claim 1, characterized in that: Two centering square rods (11) movably penetrate the front side wall of the moving plate (4) and the upper end of the centering square rod (11) is provided with a scale mark layer (11-1) and the centering square rod (11) is fixed in the fixed frame (2).

5. The centering mechanism of a screen printing screen stretcher according to claim 1, characterized in that: The adjusting mechanism (12) comprises: a second mounting plate (12-1) provided on the right side of the screen stretcher body (1); a third mounting plate (12-2) fixed on the right side of the screen stretcher body (1). Adjusting screw rod (12-3), the number of the adjusting screw rod (12-3) is two, and is respectively screwed in between the second mounting plate (12-1) and the third mounting plate (12-2) through bearing; Second limiting rod (12-6), the number of the second limiting rod (12-6) is two, and is respectively fixed between the second mounting plate (12-1) and the third mounting plate (12-2); Adjusting frame (12-7), the number of the adjusting frame (12-7) is two, and is respectively screwed on the adjusting screw rod (12-3) through thread, and the adjusting frame (12-7) is movably sleeved on the second limiting rod (12-6); the upper end of the adjusting frame (12-7) is provided with a recess.

6. The centering mechanism of a screen printing screen stretcher according to claim 5, characterized in that: The outer end of the adjusting screw rod (12-3) is fixed with the second hand screw (12-4), and a plurality of second anti-skid grooves (12-5) are formed in the second hand screw (12-4).

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