Mechanical screen stretching machine for printing

Abstract

The utility model relates to the technical field of printing equipment, in particular to a mechanical screen stretching machine for printing, which comprises a base, a protective frame is fixedly mounted at the top end of the base, two groups of screws are rotatably connected in the base, the outer sides of the screws are connected with moving blocks through threads, and screen stretching frames are connected between the moving blocks. Two sets of conveying rollers and pressing rollers are rotationally connected into the net tensioning frame, a driving motor is fixedly installed in the net tensioning frame, the conveying rollers and the pressing rollers are connected with driving gears and driven gears through the net tensioning frame, the driving gears are meshed with the driven gears, one side of one driving gear is connected with a first rotating wheel, and the other side of the other driving gear is connected with a second rotating wheel. An output shaft of the driving motor is connected with a second rotating wheel, and a transmission belt is connected between the first rotating wheel and the second rotating wheel. According to the automatic feeding and discharging device for the silk screen, the silk screen can be automatically fed and discharged while the silk screen is stretched, the machining time is greatly shortened, and high practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of printing equipment, in particular to a mechanical screen stretching machine for printing. Background Art

[0002] A screen stretching machine, also known as a screen stretching machine or a screen pulling machine, is a professional equipment used in the printing industry to tighten the screen at a specific tension and fix it on the screen frame. It is mainly used to make printing plate carriers and is an indispensable and important tool in the screen printing process. The core function of the screen stretching machine is to accurately control and apply uniform tension to the screen through mechanical or hydraulic means to ensure that the screen can maintain a stable shape and precision during the printing process, thereby obtaining high-quality printing effects. During operation, the screen stretching machine can adjust parameters such as tension and stretching speed according to different printing requirements and screen materials to adapt to different production scenarios. Existing screen stretching machines require manual operation when putting the screen on and off, which greatly reduces work efficiency and has certain limitations. Therefore, it is necessary to design a mechanical screen stretching machine for printing to solve the problem. Summary of the invention

[0003] The utility model aims to solve the shortcomings in the prior art and proposes a mechanical screen stretching machine for printing.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A mechanical screen-stretching machine for printing comprises a base, a protective frame is fixedly installed on the top of the base, two sets of screws are rotatably connected in the base, and moving blocks are connected to the outer sides of the screws through threads, and a screen-stretching frame is connected and installed between the moving blocks, two sets of conveying rollers and pressure rollers are rotatably connected in the screen-stretching frame, a driving motor is fixedly installed in the screen-stretching frame, the conveying rollers and pressure rollers are connected to driving gears and driven gears through the screen-stretching frame, and the driving gears and driven gears are meshed with each other, one side of one of the driving gears is connected to a first rotating wheel, the output shaft of the driving motor is connected to a second rotating wheel, and a transmission belt is connected between the first rotating wheel and the second rotating wheel.

[0006] Preferably, the screw rods are electric screw rods with motors, and there are two in each group, which are used to control the left and right movement of the tensioning frame. Dustproof pads are laid on the tops of the screw rods to play a protective role.

[0007] Preferably, each group of the conveying rollers and the pressing rollers has a plurality of conveying rollers and the outer sides of the conveying rollers and the pressing rollers are frosted to increase friction, thereby facilitating the net stretching operation.

[0008] Preferably, there are three driven gears between the driving gears, which are meshed with each other, and the conveying roller and the pressing roller are connected to the central driven gear, so that all the conveying rollers and the pressing rollers in the same group rotate in the same direction.

[0009] Preferably, a benchmark is fixedly installed on the top of the tensioning frame. The benchmark adopts an L-shaped structure design, and a movable groove adapted to the benchmark is opened on the top of the protective frame. The outer side of the benchmark is flush with the inner side of the conveying roller and the pressure roller, so that the position of the conveying roller and the pressure roller can be confirmed from the outside, which is convenient for alignment.

[0010] Preferably, support seats are fixedly installed on both sides of the tensioning frame at the top of the base, and inlet and outlet are opened on both sides of the protective frame. The positions of the inlet and outlet and the support seats are flush with the conveying rollers, thereby ensuring smooth loading and unloading of materials.

[0011] The beneficial effects of the utility model are:

[0012] The utility model can complete the loading and unloading work of the wire mesh and the Y-axis net stretching work through the rotation of the conveying roller and the pressure roller, and control the movement of the net stretching frame through the screw and the moving block to perform the X-axis net stretching work on the wire mesh. The operation is convenient, the loading and unloading time is greatly reduced, and the work efficiency is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a 3D structural schematic diagram of a mechanical screen stretching machine for printing proposed by the utility model;

[0014] Figure 2 This is a front structural schematic diagram of a mechanical screen stretching machine for printing proposed by the utility model;

[0015] Figure 3 This is a schematic diagram of the side structure of a mechanical screen stretching machine for printing proposed by the utility model;

[0016] Figure 4 This is a side structural cross-sectional view of a mechanical screen stretching machine for printing proposed by the utility model;

[0017] Figure 5 The utility model is a schematic diagram of the internal structure of a screen frame in a mechanical screen-stretching machine for printing.

[0018] In the figure: 1. base; 2. protective frame; 3. screw; 4. moving block; 5. tensioning frame; 6. conveying roller; 7. pressing roller; 8. driving motor; 9. driving gear; 10. driven gear; 11. first rotating wheel; 12. second rotating wheel; 13. transmission belt; 14. benchmark; 15. support seat. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Example: Refer to Figure 1-5 A mechanical screen stretching machine for printing comprises a base 1, a protective frame 2 is fixedly installed on the top of the base 1, two groups of screws 3 are rotatably connected in the base 1, and moving blocks 4 are connected to the outer sides of the screws 3 through threads, and a screen stretching frame 5 is connected and installed between the moving blocks 4, the screws 3 are specifically electric screws with motors, and each group has two, which are used to control the left and right movement of the screen stretching frame 5, and dustproof pads are laid on the tops of the screws 3 to play a protective role, two groups of conveying rollers 6 and pressing rollers 7 are rotatably connected in the screen stretching frame 5, each group of conveying rollers 6 and pressing rollers 7 has several, and the outer sides of the conveying rollers 6 and the pressing rollers 7 are frosted to increase friction, so as to facilitate the screen stretching work, a driving motor 8 is fixedly installed in the screen stretching frame 5, and the conveying rollers 6 and the pressing rollers 7 are connected to driving gears 9 and driven gears 10 through the screen stretching frame 5, and there are three driven gears 10 between the driving gears 9, and they are meshed with each other, and the conveying rollers 6 and the pressing rollers 7 are fixedly installed in the screen stretching frame 5. The tightening roller 7 is connected to the driven gear 10 in the center, so that all the conveying rollers 6 and the pressure rollers 7 in the same group rotate in the same direction, and the driving gear 9 and the driven gear 10 are meshed with each other. A first rotating wheel 11 is connected to one side of one of the driving gears 9, and the output shaft of the driving motor 8 is connected to the second rotating wheel 12. A transmission belt 13 is connected between the first rotating wheel 11 and the second rotating wheel 12. A benchmark 14 is fixedly installed on the top of the tensioning frame 5. The benchmark 14 adopts an L-shaped structure design, and a movable groove adapted to the benchmark 14 is opened on the top of the protective frame 2. The outer side of the benchmark 14 is flush with the inner side of the conveying roller 6 and the pressure roller 7, so that the position of the conveying roller 6 and the pressure roller 7 can be confirmed from the outside, which is convenient for alignment. A support seat 15 is fixedly installed on both sides of the tensioning frame 5 on the top of the base 1, and an inlet and outlet are opened on both sides of the protective frame 2. The position of the inlet and outlet and the support seat 15 is flush with the conveying roller 6, so as to ensure smooth loading and unloading.

[0021] Working principle: When in use, it is necessary to ensure that the width of the wire mesh is consistent with the spacing of the benchmark 14, which is achieved by rotating the screw 3 to control the movement of the moving block 4 and the stretching frame 5. Then, according to the position of the benchmark 14, the wire mesh is inserted into the stretching frame 5 through the inlet and outlet, so that it is connected with the conveying roller 6 and the pressure roller 7. The drive motor 8 is turned on to control the rotation of the second rotating wheel 12, and the transmission belt 13 is used to drive the driving gear 9 and the first rotating wheel 11 to rotate together. The driving gear 9 and the driven gear 10 cooperate to make the conveying roller 6 and the pressure roller 7 rotate together to transport the wire mesh until it extends out of the other inlet and outlet. After completion, the two sets of drive motors 8 are controlled to rotate in different directions, so that the two sets of conveying rollers 6 and the pressure roller 7 respectively stretch the wire mesh outward, and at the same time, the screw 3 is turned on to control the movement of the stretching frame 5, so that the wire mesh is stretched in both directions of the X-axis and the Y-axis.

[0022] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0023] The standard parts used in the utility model can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mechanical screen stretching machine for printing, comprising a base (1), characterized in that: A protective frame (2) is fixedly installed on the top of the base (1), two groups of screw rods (3) are rotatably connected inside the base (1), and the outer sides of the screw rods (3) are connected to moving blocks (4) through threads, and a tensioning frame (5) is connected and installed between the moving blocks (4), and two groups of conveying rollers (6) and pressure rollers (7) are rotatably connected inside the tensioning frame (5), and a driving motor (8) is fixedly installed inside the tensioning frame (5), and the conveying rollers (6) and the pressure rollers (7) are connected to driving gears (9) and driven gears (10) through the tensioning frame (5), and the driving gears (9) and the driven gears (10) are meshed with each other, and one side of one of the driving gears (9) is connected to a first rotating wheel (11), and the output shaft of the driving motor (8) is connected to a second rotating wheel (12), and a transmission belt (13) is connected between the first rotating wheel (11) and the second rotating wheel (12).

2. A mechanical screen stretching machine for printing according to claim 1, characterized in that: The screw rods (3) are specifically electric screw rods with a motor, and there are two of them in each group. The tops of the screw rods (3) are all provided with dustproof pads.

3. A mechanical screen stretching machine for printing according to claim 1, characterized in that: Each group of the conveying rollers (6) and the pressing rollers (7) includes a plurality of conveying rollers (6) and the pressing rollers (7), and the outer sides of the conveying rollers (6) and the pressing rollers (7) are both frosted.

4. A mechanical screen stretching machine for printing according to claim 1, characterized in that: There are three driven gears (10) between the driving gears (9) and they are meshed with each other, and the conveying roller (6) and the pressing roller (7) are connected to the central driven gear (10).

5. A mechanical screen stretching machine for printing according to claim 1, characterized in that: A pole (14) is fixedly mounted on the top of the tensioning frame (5); the pole (14) is designed as an L-shaped structure; a movable groove adapted to the pole (14) is provided on the top of the protection frame (2); and the outer side of the pole (14) is flush with the inner sides of the conveying roller (6) and the pressing roller (7).

6. A mechanical screen stretching machine for printing according to claim 1, characterized in that: A support seat (15) is fixedly mounted on the top of the base (1) on both sides of the net frame (5), and an inlet and an outlet are opened on both sides of the protection frame (2), and the inlet and the outlet and the support seat (15) are flush with the conveying roller (6).

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