Rapid plate changing mechanism and box-type plate burning machine

Abstract

The utility model belongs to the field of printing-down machines, particularly relates to a quick plate changing mechanism and a box-type printing-down machine, and aims to solve the problems that after an existing printing-down machine is used, a photosensitive plate is possibly adsorbed on the machine due to negative pressure and is inconvenient to change, and a filter screen on the printing-down machine is easily contaminated by impurities and is inconvenient to clean. The machine comprises a machine body, heat dissipation holes are formed in the two sides of the machine body, filter screens are fixedly arranged on the inner walls of the two heat dissipation holes through bolts, cleaning mechanisms facilitating cleaning of the filter screens are arranged on the two sides of the machine body, the filter screens can be cleaned conveniently and rapidly through the cleaning mechanisms, the service life of the filter screens is prolonged, and the service life of the machine body is prolonged. The triangular shovel plate can easily shovel the photosensitive plate from the printing-down machine platform in the clamping process, the problem that the photosensitive plate is difficult to take down due to negative pressure adsorption is solved, and the success rate of plate replacement is further improved.

Description

Technical Field

[0001] This utility model relates to the field of exposure machine technology, and in particular to a quick plate changing mechanism and a box-type exposure machine. Background Technology

[0002] A plate-making machine is a contact exposure imaging device used to make printing plates. It uses pressure (including atmospheric pressure and mechanical pressure) to make the original plate and the photosensitive plate fit tightly together so that the image on the original plate can be accurately exposed onto the photosensitive plate through a photochemical reaction. The plate-making machine mainly consists of a light source device, an exposure chamber, a vacuum chamber, electrical components, and a base.

[0003] A search revealed that patent CN220603847U discloses a printing plate exposure machine.

[0004] However, the above technical solutions have the following problems: after the exposure machine is used, the photosensitive plate may be adsorbed on the machine due to negative pressure, making it inconvenient to replace the plate, and the filter screen on the exposure machine is easily contaminated with impurities, making it inconvenient to clean. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing plate-changing machines, such as the photosensitive plate being adsorbed onto the machine due to negative pressure after use, making plate replacement inconvenient, and the filter screen on the plate-changing machine being easily contaminated with impurities, making cleaning difficult. Therefore, this invention proposes a quick plate-changing mechanism and a box-type plate-changing machine.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A box-type exposure machine includes a machine body, on both sides of the machine body are heat dissipation holes, and a filter screen is fixed to the inner wall of each heat dissipation hole by bolts. A cleaning mechanism for cleaning the filter screen is provided on both sides of the machine body. A photosensitive plate for printing is placed on the machine body.

[0008] In one possible design, the cleaning mechanism includes four side frames, four sliding grooves, two brushes, and two push plates. The four side frames are fixedly connected to both sides of the same machine body and are located on both sides of two heat dissipation holes. The four sliding grooves are respectively disposed on one side of the four side frames. Sliders adapted to the sliding grooves are fixedly connected to both sides of the two brushes. The four sliders are slidably connected to the four sliding grooves. The two push plates are fixedly disposed on one side of the two brushes.

[0009] In one possible design, a sealing gasket for sealing is provided on the top of the machine body.

[0010] A quick plate changing mechanism includes a connecting frame, a rectangular groove at the bottom of the connecting frame, two No. 1 plates fixedly connected to the inner wall of the rectangular groove, a plate changing mechanism for facilitating plate changing on the connecting frame, and a handle for easy gripping fixedly connected to the top of the connecting frame.

[0011] In one possible design, the plate-changing mechanism includes a motor, a bidirectional lead screw, and two clamping plates. One side of the motor is fixedly connected to one side of the first plate by bolts. The output shaft of the motor rotatably passes through one side of the first plate and is fixedly connected to one end of the bidirectional lead screw. The two ends of the bidirectional lead screw are respectively rotatably connected to the adjacent sides of the two first plates through bearings. Two moving blocks are threaded on the bidirectional lead screw. The top center of the two clamping plates is fixedly connected to the bottom of the two moving blocks, respectively. Rubber pads are provided on the adjacent sides of the two clamping plates. A pressure sensor is provided between the clamping plates and the rubber pads.

[0012] In one possible design, a spade is fixedly provided on the bottom of the side of the two clamping plates that are close to each other, which facilitates the replacement of the photosensitive plate. The two spades are both set in the shape of a triangular plate.

[0013] In one possible design, the bottom of both clamping plates and both shovel plates are coated, and both coatings are made of Teflon.

[0014] In this application, during plate exposure, the photosensitive plate is placed stably in a designated position inside the machine body. The sealing gasket effectively blocks external light and dust from entering, forming a closed exposure space to ensure the quality of the exposure environment. When the filter screen needs cleaning due to accumulated dust, the operator holds the push plate (with anti-slip texture on the surface) and pushes the brush along the slide groove (the brush is slidably connected to the slide groove of the side frame via a slider). The brush bristles contact the surface of the filter screen, brushing off dust and debris. Repeating the push and pull several times completes the cleaning. When changing plates, the controller starts the motor, and its output shaft drives the bidirectional lead screw to rotate through the coupling. The two ends of the bidirectional lead screw are rotatably connected to the No. 1 plate through bearings. Two moving blocks (located in the positive and negative thread sections respectively) threaded on the bidirectional lead screw rotate... Driven by a rotary mechanism, the two clamping plates move towards each other, clamping the photosensitive plate. A rubber pad between the clamping plates and the photosensitive plate increases friction and provides cushioning to prevent damage. A pressure sensor between the clamping plates and the rubber pad monitors the clamping force in real time and transmits a signal to the control system. When the clamping force reaches a set value, the control system stops the motor to ensure appropriate clamping force. During clamping, the inclined surface of the shovel gradually contacts the photosensitive plate. As the clamping force increases, the photosensitive plate is lifted from the exposure machine platform, separating it from the platform. The operator then uses a handle to lift the entire quick plate changing mechanism, along with the clamped photosensitive plate, and moves it to a designated position before placing a new photosensitive plate in its original location.

[0015] The beneficial effects of this utility model are as follows:

[0016] In this invention, the filter screen can block dust and debris from entering, and the cleaning mechanism allows for convenient and quick cleaning of the filter screen, extending its service life and ensuring effective ventilation and heat dissipation. A pressure sensor monitors the clamping force in real time, and the control system precisely controls the motor's rotation to ensure appropriate clamping force. This prevents the photosensitive plate from slipping due to insufficient clamping force, while also preventing damage due to excessive clamping force, thus improving the accuracy and safety of plate changing. The triangular-shaped shovel plate easily lifts the photosensitive plate from the exposure machine platform during clamping, solving the problem of the photosensitive plate being difficult to remove due to negative pressure adsorption, further increasing the success rate of plate changing. The bottom of the clamping plate and shovel plate is coated with Teflon material, reducing friction with the top of the machine body and minimizing scratches. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the filter section structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the plate-changing structure of this utility model;

[0020] Figure 4 This is a bottom view of the replacement structure of this utility model.

[0021] In the diagram: 1. Machine body; 2. Sealing gasket; 3. Photosensitive plate; 4. Filter screen; 5. Side frame; 6. Slide groove; 7. Brush; 8. Push plate; 9. Handle; 10. Connecting frame; 11. Clamping plate; 12. Rubber pad; 13. Scraper plate; 14. Coating; 15. Two-way lead screw; 16. Motor. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1

[0024] Reference Figures 1-4A box-type exposure machine includes a machine body 1. The machine body 1 is made of a sturdy and durable metal material, such as stainless steel or aluminum alloy, to ensure the stability and durability of the equipment. It has a rectangular shape and forms a closed exposure space inside. A sealing gasket 2 is set on the top of the machine body 1. The sealing gasket 2 is made of a highly elastic and aging-resistant rubber material, such as silicone rubber. The sealing gasket 2 is tightly attached to the top edge of the machine body 1 with adhesive. When the exposure machine is working, the sealing gasket 2 can ensure a seal, and the photosensitive plate 3 is placed stably in the designated position inside the machine body 1.

[0025] Symmetrical heat dissipation holes are provided on both sides of the machine body 1. The heat dissipation holes are rectangular or circular openings used to dissipate the heat generated during the operation of the equipment. A filter screen 4 is fixedly installed on the inner wall of each heat dissipation hole by bolts. The filter screen 4 is made of stainless steel, which has good corrosion resistance and mechanical strength. The mesh size of the filter screen 4 is designed according to actual needs. Generally, it can effectively block dust, debris and other objects from entering the machine, while ensuring good ventilation and heat dissipation.

[0026] The cleaning mechanism includes four side frames 5, four sliding grooves 6, two brushes 7, and two push plates 8. The four side frames 5 are welded to both sides of the machine body 1 and are located on both sides of the two heat dissipation holes, serving as support and positioning. Each side frame 5 has a sliding groove 6 on one side. The two brushes 7 have sliders welded to both sides that are compatible with the sliding grooves 6. The four sliders are embedded in the four sliding grooves 6 to achieve a sliding connection between the brushes 7 and the side frames 5. The two push plates 8 are welded to one side of the two brushes 7. The surface of the push plates 8 is provided with anti-slip textures to facilitate the operator's grip and pushing. When the filter screen 4 needs to be cleaned, the operator holds the push plate 8 and pushes the brushes 7 along the direction of the sliding grooves 6. During the movement, the bristles of the brushes 7 contact the surface of the filter screen 4, brushing off the dust, debris, etc. attached to the filter screen 4. After pushing the brushes 7 to one end, pull them back in the opposite direction. Repeat this several times to complete the cleaning of the filter screen 4.

[0027] A box-type plate-changing machine includes a connecting frame 10. The connecting frame 10 is made of aluminum alloy, which is lightweight and has high strength. A rectangular groove is opened at the bottom of the connecting frame 10. Two No. 1 plates are welded and fixed to the inner wall of the rectangular groove. The two No. 1 plates are parallel to each other and provide an installation base for other components of the plate-changing mechanism. A handle 9 is welded and fixed to the top of the connecting frame 10. The handle 9 has a "U" shape and is covered with a non-slip rubber sleeve, which makes it convenient for operators to hold and operate the entire plate-changing mechanism.

[0028] The plate-changing mechanism includes a motor 16, a bidirectional lead screw 15, and two clamping plates 11. The motor 16 is a small DC geared motor with high torque output and low speed to meet the requirements of clamping and moving the photosensitive plate 3. The motor 16 is bolted to one side of the first plate, and its output shaft rotates through one side of the first plate and is fixedly connected to one end of the bidirectional lead screw 15 via a coupling. The two ends of the bidirectional lead screw 15 are respectively rotatably connected to the adjacent sides of the two first plates via bearings, ensuring stable rotation of the bidirectional lead screw 15. Two moving blocks are threaded onto the bidirectional lead screw 15, located on the positive and negative thread sections of the bidirectional lead screw 15. When the bidirectional lead screw 15 rotates, the two moving blocks can move towards or away from each other. The top center of the two clamping plates 11 is welded and fixed to the bottom of the two moving blocks. The clamping plates 11 are made of stainless steel, possessing sufficient strength and rigidity. Rubber is adhered to the adjacent sides of the two clamping plates 11. The rubber pad 12 increases the friction between the clamping plate 11 and the photosensitive plate 3, and also acts as a buffer to prevent damage to the photosensitive plate 3 during clamping. A pressure sensor is installed between the clamping plate 11 and the rubber pad 12. The pressure sensor can monitor the clamping force in real time and transmit the signal to the control system to achieve precise control of the clamping force. When the photosensitive plate 3 needs to be replaced, the quick plate changing mechanism is placed above the photosensitive plate 3, so that the two clamping plates 11 are located on both sides of the photosensitive plate 3. The motor 16 is started, and the motor 16 drives the bidirectional lead screw 15 to rotate. The two moving blocks move towards each other under the drive of the bidirectional lead screw 15, thereby driving the two clamping plates 11 to move closer to each other and clamp the photosensitive plate 3. The pressure sensor monitors the clamping force in real time. When the clamping force reaches the set value, the control system controls the motor 16 to stop rotating to ensure that the clamping force is moderate. The photosensitive plate 3 will not slip due to insufficient clamping force, nor will it be damaged due to excessive clamping force.

[0029] A shovel plate 13 is welded and fixed to the bottom of the two clamping plates 11 on the side that are close to each other. The shovel plate 13 is triangular in shape, and its inclined surface can be easily inserted between the photosensitive plate 3 and the exposure machine platform. This facilitates the replacement of the photosensitive plate 3 when negative pressure adsorption occurs. During the process of the clamping plates 11 moving to clamp the photosensitive plate 3, the inclined surface of the shovel plate 13 gradually contacts the photosensitive plate 3, and as the clamping force increases, it lifts the photosensitive plate 3 from the exposure machine platform, thus separating the photosensitive plate 3 from the exposure machine platform.

[0030] The bottoms of the two clamping plates 11 and the two shovel plates 13 are coated with a Teflon coating 14. The Teflon coating has an extremely low coefficient of friction and good self-lubricating properties, which can effectively reduce the friction between the clamping plates 11 and shovel plates 13 and the top of the machine body 1, thereby reducing scratches on the machine body 1. At the same time, the Teflon coating also has good corrosion resistance and wear resistance, which can improve the service life of the clamping plates 11 and shovel plates 13.

[0031] This application can be used in the field of exposure machines, or in other fields applicable to this application.

[0032] However, as is well known to those skilled in the art, the working principles and wiring methods of the machine body 1, motor 16 and pressure sensor are commonplace and are all conventional methods or common knowledge, so they will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience. The motor 16 and pressure sensor are both connected to the controller set on the top of the connecting frame 10 through the line and are powered by an external power source. The model of the machine body 1 is set to YL-S9512 and the pressure sensor is set to MPX5700D.

[0033] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A box-type exposure machine, characterized in that, The machine body (1) includes heat dissipation holes on both sides of the machine body (1), and a filter screen (4) is fixed on the inner wall of each heat dissipation hole by bolts. A cleaning mechanism is provided on both sides of the machine body (1) to facilitate cleaning of the filter screen (4). A photosensitive plate (3) for printing is placed on the machine body (1).

2. The box-type exposure machine according to claim 1, characterized in that, The cleaning mechanism includes four side frames (5), four sliding grooves (6), two brushes (7) and two push plates (8). The four side frames (5) are fixedly connected to both sides of the same machine body (1) and are located on both sides of two heat dissipation holes. The four sliding grooves (6) are respectively set on one side of the four side frames (5). The two brushes (7) are fixedly connected to the sides of the sliding grooves (6) with sliders that are compatible with the sliding grooves (6). The four sliders are slidably connected to the four sliding grooves (6). The two push plates (8) are fixedly set on one side of the two brushes (7) and fixedly connected.

3. The box-type exposure machine according to claim 1, characterized in that, The top of the machine body (1) is provided with a sealing gasket (2) for sealing.

4. A rapid plate-changing mechanism, characterized in that, For changing plates in a box-type exposure machine according to any one of claims 1-3, the machine includes a connecting frame (10), the bottom of the connecting frame (10) is provided with a rectangular groove, the inner wall of the rectangular groove is fixedly connected with two No. 1 plates, the connecting frame (10) is provided with a plate changing mechanism to facilitate changing the photosensitive plate (3), and the top of the connecting frame (10) is fixedly connected with a handle (9) for easy holding.

5. A quick plate changing mechanism according to claim 4, characterized in that, The plate changing mechanism includes a motor (16), a bidirectional lead screw (15), and two clamping plates (11). One side of the motor (16) is fixedly connected to one side of the first plate by bolts. The output shaft of the motor (16) rotates through one side of the first plate and is fixedly connected to one end of the bidirectional lead screw (15). The two ends of the bidirectional lead screw (15) are respectively rotatably connected to the two adjacent sides of the first plates by bearings. Two moving blocks are threaded on the bidirectional lead screw (15). The top center of the two clamping plates (11) is fixedly connected to the bottom of the two moving blocks respectively. Rubber pads (12) are provided on the adjacent sides of the two clamping plates (11). A pressure sensor is provided between the clamping plates (11) and the rubber pads (12).

6. A quick plate-changing mechanism according to claim 5, characterized in that, Both clamping plates (11) are fixedly provided with a spade plate (13) on the bottom of the side that is close to each other, which facilitates the replacement of the photosensitive plate (3). Both spade plates (13) are triangular in shape.

7. A quick plate-changing mechanism according to claim 5, characterized in that, The bottom of both clamping plates (11) and both shovel plates (13) are provided with a coating (14), and the material of both coatings (14) is Teflon.

Images