Plate making machine

Abstract

The utility model provides a plate making machine. The plate making machine comprises a machine frame, a wax paper cylinder base, a thermosensitive plate making roller and a thermosensitive printing head assembly, a printing channel for wax paper to penetrate through is arranged on the machine frame, the wax paper barrel base is arranged at the feeding end of the printing channel, and the thermosensitive plate making roller and the thermosensitive printing head assembly are arranged above and below the printing channel respectively. A distance adjusting assembly is further arranged on the machine frame, the thermal printing head assembly is movably connected to the machine frame, and the distance adjusting assembly is in transmission connection with the thermal printing head assembly and used for driving the thermal printing head assembly to move up and down so as to adjust the distance between the thermal printing head assembly and the thermal platemaking roller. The thermal printing head assembly can be driven by the distance adjusting assembly to move downwards so as to adjust the distance between the thermal printing head assembly and the thermal platemaking roller, so that the lower surface of wax paper is separated from the thermal printing head assembly, the wax paper is prevented from being adhered to the thermal printing head assembly, and the subsequent platemaking efficiency and quality are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of plate-making equipment technology, specifically to a plate-making machine. Background Technology

[0002] A plate-making machine is a new type of office equipment that digitally creates stencils. It adopts a digital workflow and directly creates a printable stencil from the original artwork using photothermal plate-making for transcribing. The resulting printed text and images are clear and undistorted, and the plate-making speed is fast and the cost is low. It can be used in office, education, archives, and document systems.

[0003] During plate-making, the thermal printhead converts the digital information received by the thermal printhead into heat energy. The thermal printhead, in conjunction with the plate-making roller, imprints the image onto the wax paper, thus printing the document. To ensure proper wax paper feeding, the thermal printhead and plate-making roller are in contact with the top and bottom surfaces of the wax paper, respectively. This means that when the plate-making machine stops, the residual heat from the thermal printhead can melt the wax paper and cause it to stick to the printhead, affecting subsequent plate-making efficiency and quality. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a plate-making machine that can prevent wax paper from sticking to the thermal print head when plate making stops.

[0005] The technical solution of this utility model is to provide a plate-making machine with the following structure: including a frame and a wax paper roll holder, a thermal plate-making roller, and a thermal printhead assembly disposed on the frame; the frame is provided with a printing channel for wax paper to pass through, the wax paper roll holder is disposed at the feed end of the printing channel for holding the wax paper roll, the thermal plate-making roller and the thermal printhead assembly are respectively disposed above and below the printing channel for making a plate for the wax paper passing through the printing channel; the frame is also provided with a spacing adjustment component, the thermal printhead assembly is movably connected to the frame, and the spacing adjustment component is drivenly connected to the thermal printhead assembly for driving the thermal printhead assembly to move up and down to adjust the spacing between the thermal printhead assembly and the thermal plate-making roller.

[0006] By adopting the above structure, the plate-making machine of this utility model has the following advantages compared with the prior art:

[0007] This invention features a spacing adjustment component on the frame. When the plate-making process stops, the spacing adjustment component drives the thermal printhead assembly downwards to adjust the spacing between the thermal printhead assembly and the thermal plate-making roller, separating the lower surface of the wax paper from the thermal printhead assembly and preventing adhesion. When plate-making is needed, the spacing adjustment component drives the thermal printhead assembly upwards, bringing the lower surface of the wax paper into contact with the thermal printhead assembly, ensuring normal plate-making. This invention prevents the wax paper from sticking to the thermal printhead when plate-making stops, ensuring the efficiency and quality of subsequent plate-making.

[0008] Preferably, the thermal printhead assembly includes a thermal printhead and a movable support; the thermal printhead is fixedly connected to the top of the movable support and located directly below the thermal plate-making roller; the movable support is connected to the frame and can move up and down in the vertical direction; the spacing adjustment component is drivenly connected to the movable support and is used to drive the movable support and the thermal printhead to move up and down.

[0009] Preferably, the thermal printhead assembly further includes a return spring. A support plate is connected to the frame below the movable bracket. One end of the return spring abuts against the bottom of the movable bracket, and the other end abuts against the top of the support plate. Applying a downward force to the movable bracket using the spacing adjustment assembly drives the thermal printhead downward. Removing the force applied to the movable bracket causes the movable bracket and thermal printhead to return to their original positions under the elastic force of the return spring.

[0010] Preferably, a vertically extending spring support is connected to the support plate, with a gap between the top of the spring support and the bottom of the movable bracket, and the return spring is sleeved on the spring support. The spring support ensures that the return spring will not shift radially, and ensures that the movable bracket and the thermal printhead can move vertically up and down.

[0011] Preferably, the support plate is connected to a vertically extending guide post, and the movable bracket is provided with a guide hole that matches the guide post, with the upper end of the guide post passing through the guide hole. The cooperation between the guide post and the guide hole further ensures that the movable bracket and the thermal print head can move vertically up and down.

[0012] Preferably, the spacing adjustment assembly includes a fixed frame, a drive motor, and a cam. The fixed frame is connected to the frame, the drive motor is mounted on the fixed frame, and the cam is connected to the output shaft of the drive motor. The lower end of the movable support has a radially extending bent portion, and the cam abuts against the upper surface of the bent portion. The drive motor drives the cam to rotate, thereby pushing the bent portion to move downward or return to its original position, which in turn drives the thermal printhead on the movable support to move up and down, allowing the thermal printhead to adhere to or separate from the wax paper as needed.

[0013] Preferably, a semi-circular positioning plate is connected to the output shaft of the drive motor, and the positioning plate rotates synchronously with the cam; a detector is connected to one side of the positioning plate on the fixing frame to detect the rotation angle of the positioning plate. Since the positioning plate rotates synchronously with the cam, the rotation angle of the cam can be determined by the rotation angle of the positioning plate detected by the detector. The control unit will automatically control the start and stop of the drive motor according to the signal transmitted by the detector to ensure that the thermal printhead moves up and down into position.

[0014] Preferably, a cover plate is rotatably connected to the frame, and a sponge roller is rotatably connected to the rotating shaft of the cover plate. A sponge roller guide plate is floatingly connected to the frame below the sponge roller. The sponge roller and the cover plate share a rotating shaft, which can save on equipment manufacturing costs. Due to space constraints, the position of the sponge roller is fixed and cannot float up and down. Therefore, the sponge roller guide plate below the sponge roller is made to float, thereby adjusting the gap between the two.

[0015] Preferably, one end of the sponge roller guide plate away from the feeding end of the printing channel is rotatably connected to the frame, and the other end is connected to the frame via a floating spring. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a cross-sectional view of the present invention.

[0018] Figure 3 This is a cross-sectional view of the present invention from another viewing direction.

[0019] Figure 4 for Figure 2 A magnified view of a portion of the image.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Frame; 11. Support plate; 12. Spring support column; 13. Guide column; 2. Wax paper tube holder; 3. Thermal plate making roller; 4. Thermal printhead assembly; 41. Thermal printhead; 42. Movable bracket; 421. Bending part; 43. Return spring; 5. Spacing adjustment assembly; 51. Fixing frame; 52. Drive motor; 53. Cam; 54. Positioning plate; 55. Detector; 6. Cover plate; 61. Sponge roller; 62. Sponge roller guide plate; 63. Floating spring. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. At the same time, the terms "first", "second", etc. are only used to distinguish the names of each component and do not have a primary or secondary relationship. Therefore, they should not be construed as limitations on this utility model.

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown;

[0025] This utility model discloses a plate-making machine: including a frame 1 and a wax paper tube holder 2, a thermal plate-making roller 3, and a thermal print head assembly 4 disposed on the frame 1; the frame 1 is provided with a printing channel for wax paper to pass through, the wax paper tube holder 2 is disposed at the feed end of the printing channel and is used to hold the wax paper roll, the thermal plate-making roller 3 and the thermal print head assembly 4 are respectively disposed above and below the printing channel and are used to make plates for the wax paper passing through the printing channel.

[0026] The frame 1 is also equipped with a spacing adjustment component 5. The thermal printhead assembly 4 is movably connected to the frame 1. The spacing adjustment component 5 is connected to the thermal printhead assembly 4 for driving the thermal printhead assembly 4 to move up and down to adjust the spacing between the thermal printhead assembly 4 and the thermal plate-making roller 3.

[0027] This invention features a spacing adjustment component 5 on the frame 1. When the plate-making process stops, the spacing adjustment component 5 drives the thermal printhead assembly 4 downward to adjust the spacing between the thermal printhead assembly 4 and the thermal plate-making roller 3, separating the lower surface of the wax paper from the thermal printhead assembly 4 and preventing the wax paper from sticking to the thermal printhead assembly 4. When plate-making is required, the spacing adjustment component 5 drives the thermal printhead assembly 4 upward to bring the lower surface of the wax paper into contact with the thermal printhead assembly 4, ensuring the normal progress of plate-making. This invention prevents the wax paper from sticking to the thermal printhead when plate-making stops, ensuring the efficiency and quality of subsequent plate-making.

[0028] The thermal printhead assembly 4 includes a thermal printhead 41 and a movable support 42. The thermal printhead 41 is fixedly connected to the top of the movable support 42 and is located directly below the thermal plate-making roller 3. The movable support 42 is connected to the frame 1 and can move up and down in the vertical direction. The spacing adjustment component 5 is connected to the movable support 42 for driving the movable support 42 and the thermal printhead 41 to move up and down.

[0029] The thermal printhead assembly 4 also includes a return spring 43. A support plate 11 is connected to the frame 1 below the movable support 42. One end of the return spring 43 abuts against the bottom of the movable support 42, and the other end abuts against the top of the support plate 11. The spacing adjustment assembly 5 applies a downward force to the movable support 42 to drive the thermal printhead 41 to move downward. After the force applied to the movable support 42 is removed, the movable support 42 and the thermal printhead 41 will return to their original positions under the elastic force of the return spring 43.

[0030] A vertically extending spring support 12 is connected to the support plate 11. The top of the spring support 12 is spaced apart from the bottom of the movable bracket 42. The return spring 43 is sleeved on the spring support 12. The spring support 12 ensures that the return spring 43 will not shift radially.

[0031] A vertically extending guide post 13 is connected to the support plate 11. The movable bracket 42 is provided with a guide hole that matches the guide post 13, and the upper end of the guide post 13 passes through the guide hole. The guide post 13 and the guide hole cooperate to ensure that the movable bracket 42 and the thermal print head 41 can move up and down in the vertical direction.

[0032] The spacing adjustment assembly 5 includes a fixed frame 51, a drive motor 52, and a cam 53. The fixed frame 51 is connected to the frame 1. The drive motor 52, which can be a stepper motor, is fixedly mounted on the fixed frame 51. The cam 53 is connected to the output shaft of the stepper motor. The lower end of the movable support 42 has a radially extending bent portion 421, and the cam 53 abuts against the upper surface of the bent portion 421. The drive motor 52 drives the cam 53 to rotate, thereby pushing the bent portion 421 to move downward or return to its original position, which in turn drives the thermal printhead 41 on the movable support 42 to move up and down, allowing the thermal printhead 41 to adhere to or separate from the wax paper as needed.

[0033] A semi-circular positioning plate 54 is connected to the output shaft of the drive motor 52. The positioning plate 54 rotates synchronously with the cam 53. A detector 55 (e.g., a position sensor) is connected to one side of the positioning plate 54 on the fixed frame 51 to detect the rotation angle of the positioning plate 54. Since the positioning plate 54 rotates synchronously with the cam 53, the rotation angle of the cam 53 can be determined by the rotation angle of the positioning plate 54 detected by the detector 55. When the detector 55 detects one detection point of the semi-circular positioning plate 54, the protrusion of the cam 53 abuts against the upper surface of the bent part 421. When the detector 55 detects another detection point of the semi-circular positioning plate 54, the protrusion of the cam 53 moves away from the bent part 421. The control unit will automatically control the start and stop of the drive motor 52 according to the signal transmitted by the detector 55 to ensure that the thermal print head 41 moves up and down into position.

[0034] A cover plate 6 is rotatably connected to the frame 1. A sponge roller 61 is rotatably connected to the rotating shaft of the cover plate 6. A sponge roller guide plate 62 is floatingly connected to the frame 1 below the sponge roller 61. One end of the sponge roller guide plate 62 away from the feed end of the printing channel is rotatably connected to the frame 1, and the other end is connected to the frame 1 through a floating spring 63.

[0035] The sponge roller 61 and the cover plate 6 share a common shaft, which can save on equipment manufacturing costs. Due to space constraints, the position of the sponge roller 61 is fixed and cannot move up and down. Therefore, the sponge roller guide plate 62 below the sponge roller 61 is made to be floating to adjust the gap between the two.

[0036] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A plate-making machine, comprising a frame (1) and a wax paper roll holder (2), a thermal plate-making roller (3), and a thermal printhead assembly (4) disposed on the frame (1); wherein the frame (1) is provided with a printing channel for wax paper to pass through, the wax paper roll holder (2) is disposed at the feed end of the printing channel for holding the wax paper roll, and the thermal plate-making roller (3) and the thermal printhead assembly (4) are respectively disposed above and below the printing channel for making a plate of wax paper passing through the printing channel; characterized in that: The frame (1) is also provided with a spacing adjustment component (5). The thermal printhead assembly (4) is movably connected to the frame (1). The spacing adjustment component (5) is connected to the thermal printhead assembly (4) for driving the thermal printhead assembly (4) to move up and down, so as to adjust the spacing between the thermal printhead assembly (4) and the thermal plate making roller (3).

2. The plate-making machine according to claim 1, characterized in that: The thermal printhead assembly (4) includes a thermal printhead (41) and a movable support (42); the thermal printhead (41) is fixedly connected to the top of the movable support (42) and located directly below the thermal plate-making roller (3); the movable support (42) is connected to the frame (1) and can move up and down in the vertical direction; the spacing adjustment component (5) is connected to the movable support (42) for driving the movable support (42) and the thermal printhead (41) to move up and down.

3. A plate-making machine according to claim 2, characterized in that: The thermal printhead assembly (4) also includes a reset spring (43). A support plate (11) is connected to the frame (1) below the movable bracket (42). One end of the reset spring (43) abuts against the bottom of the movable bracket (42), and the other end abuts against the top of the support plate (11).

4. A plate-making machine according to claim 3, characterized in that: A vertically extending spring support (12) is connected to the support plate (11). The top of the spring support (12) is spaced apart from the bottom of the movable bracket (42). The reset spring (43) is sleeved on the spring support (12).

5. A plate-making machine according to claim 4, characterized in that: The support plate (11) is connected to a guide post (13) extending vertically upward. The movable bracket (42) is provided with a guide hole that matches the guide post (13). The upper end of the guide post (13) passes through the guide hole.

6. A plate-making machine according to claim 5, characterized in that: The spacing adjustment assembly (5) includes a fixed frame (51), a drive motor (52) and a cam (53). The fixed frame (51) is connected to the frame (1), the drive motor (52) is mounted on the fixed frame (51), and the cam (53) is connected to the output shaft of the drive motor (52). The lower end of the movable bracket (42) is provided with a radially extending bent portion (421), and the cam (53) abuts against the upper surface of the bent portion (421).

7. A plate-making machine according to claim 6, characterized in that: A semi-circular positioning plate (54) is connected to the output shaft of the drive motor (52), and the positioning plate (54) rotates synchronously with the cam (53); a detector (55) is connected to one side of the positioning plate (54) on the fixing frame (51) to detect the rotation angle of the positioning plate (54).

8. A plate-making machine according to claim 1, characterized in that: A cover plate (6) is rotatably connected to the frame (1), and a sponge roller (61) is rotatably connected to the shaft of the cover plate (6). A sponge roller guide plate (62) is floatingly connected to the frame (1) below the sponge roller (61).

9. A plate-making machine according to claim 8, characterized in that: The sponge roller guide plate (62) is rotatably connected to the frame (1) at one end away from the feeding end of the printing channel, and the other end is connected to the frame (1) through a floating spring (63).

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