Electric eye device for printing machine

Abstract

The utility model discloses an electric eye device for a printing machine, which comprises a first guide rail, a second guide rail and a third guide rail, the feeding direction on a working table of the printing machine is used as the X-axis direction, the direction perpendicular to the X-axis direction is used as the Y-axis direction, and the first guide rail is parallel to the Y-axis direction; the base with a locking function is connected to the first guide rail in a sliding manner; a linear guide rail in the X-axis direction is fixedly connected to the base, a sliding block is connected to the linear guide rail in a sliding mode, a boss is arranged at the rear end of the base, a micrometric screw arranged in the X-axis direction is connected to the boss, a tension spring is connected between the sliding block and the boss, and the micrometric screw is connected with the tension spring. The tension spring forces the rear end face of the sliding block to be always kept in contact with the front end face of the micrometric screw. And the electric eye is fixedly connected to the front end of the sliding block. The device is simple in structure, high in position precision and capable of meeting high-precision printing operation.

Description

Technical Field

[0001] The utility model relates to the field of printing machine equipment, in particular to an electric eye device for a printing machine. Background Art

[0002] Overprinting refers to the requirement for overlapping and registering of printed images and texts on each color plate during multi-color printing. That is, the single-color printing plates with different screen angles obtained after the original is separated into colors are overlapped and registered in sequence according to the color sequence of the printing plates, and the final printed product is the same level and color tone as the original.

[0003] At present, when printing overprint products, some products have high requirements for printing accuracy, and the error usually cannot exceed 1 silk; therefore, it is necessary to install an electric eye (sensor) on the printing machine to monitor the position of the printed pattern. In order to meet the requirements of detection accuracy, the adjustment of the electric eye position must also reach a certain precision to meet the use requirements. The current electric eye device, especially the mechanism for moving the electric eye position, is usually composed of a simple guide rail and a slider, and then the electric eye is installed on the slider. The accuracy of the adjustment of the electric eye position is completely unable to meet the work requirements for fine overprinting. Summary of the invention

[0004] In view of this, it is necessary to provide an electric eye device for a printing press with a simple structure and high moving accuracy.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: an electric eye device for a printing machine, comprising:

[0006] A first guide rail, with the feeding direction on the printing machine workbench as the X-axis direction, and the direction perpendicular to the X-axis direction as the Y-axis direction, and the first guide rail is parallel to the Y-axis direction;

[0007] A base, wherein the base is slidably connected to the first guide rail with a locking function; a linear rail along the X-axis direction is fixedly connected to the base, a slider is slidably connected to the linear rail, a boss is provided at the rear end of the base, a micrometer screw arranged along the X-axis direction is connected to the boss, a tension spring is connected between the slider and the boss, and the tension spring forces the rear end face of the slider to always keep in contact with the front end face of the micrometer screw;

[0008] An electric eye is fixedly connected to the front end of the slider.

[0009] Furthermore, the number of the first guide rails is two.

[0010] Furthermore, the first guide rail is a cylindrical guide rail; the base has two circular holes for sleeve-connecting the two first guide rails.

[0011] Furthermore, a linear bearing is fixedly connected in the circular hole and is slidably connected to the first guide rail.

[0012] Furthermore, the base has a locking knob for limiting its movement on the first guide rail.

[0013] Furthermore, the micrometer screw is an accessory of a threaded micrometer, and the micrometer screw is also equipped with a fine adjustment knob, a coarse adjustment knob and a scale sleeve.

[0014] Furthermore, both sides of the printing machine workbench are fixedly connected with second guide rails along the X-axis direction, and both ends of the first guide rails are fixedly connected with brackets, and the brackets are slidably connected to the second guide rails with a locking function.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the device creatively combines the micrometer screw in the thread micrometer with the moving mechanism of the electric eye, realizes the precise control of the movement of the electric eye, and ensures the work of high-precision printing.

[0016] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of an embodiment of the utility model.

[0018] Figure 2 It is a structural schematic diagram of the base in the embodiment of the utility model.

[0019] In the figure: 1-second guide rail, 2-first guide rail, 21-bracket, 3-base, 31-locking knob, 32-linear bearing, 33-boss, 34-linear rail, 4-micrometer screw, 5-slider, 6-electric eye. DETAILED DESCRIPTION

[0020] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0021] like Figure 1-2 As shown, an electric eye device for a printing machine includes: a first guide rail 2, a second guide rail 1, a base 3 and an electric eye 6.

[0022] In this embodiment, the feeding direction on the printing machine workbench is the X-axis direction, and the direction perpendicular to the X-axis direction is the Y-axis direction.

[0023] There are two second guide rails 1, which are respectively fixedly connected to two sides of the printing press workbench and arranged along the X-axis direction.

[0024] The first guide rail 2 is parallel to the Y-axis direction. There are two first guide rails 2, and the first guide rails 2 are cylindrical guide rails. Brackets 21 are fixedly connected to both ends of the first guide rail 2, and the brackets 21 are slidably connected to the second guide rail 1 with a locking function.

[0025] The base 3 has two circular holes for sleeve-engaging the two first guide rails 2, and a linear bearing 32 is fixedly connected in the circular holes and slidably connected to the first guide rails 2. The base 3 has a locking knob 31 for limiting its movement on the first guide rails 2.

[0026] A precision linear rail 34 along the X-axis direction is fixedly connected to the base 3, and a slider 5 is slidably connected to the linear rail 34. The base 3 has a boss 33 at the rear end, and a micrometer screw 4 arranged along the X-axis direction is connected to the boss 33. A tension spring is connected between the slider 5 and the boss 33, and the tension spring forces the rear end face of the slider 5 to always maintain contact with the front end face of the micrometer screw 4.

[0027] The micrometer screw 4 is an accessory of the threaded micrometer, and the micrometer screw 4 is also equipped with a fine adjustment knob, a coarse adjustment knob and a scale sleeve. The micrometer screw is driven forward or backward along the X-axis direction by the fine adjustment knob and the coarse adjustment knob, thereby pushing the slider forward or backward along the linear track direction. The tension spring between the slider and the boss ensures that the rear end face of the slider always maintains contact with the front end face of the micrometer screw, thereby ensuring that the micrometer screw can always act on the slider to control the displacement of the slider. This device uses the high-precision displacement measurement of the threaded micrometer itself, and then converts the accuracy into the high-precision displacement of the slider, that is, the electric eye on the slider, and the displacement of the slider (or electric eye) can be accurately known through the scale, realizing high-precision visual displacement.

[0028] The electric eye 6 is fixedly connected to the front end of the slider 5. The electric eye 6 is a commonly used deviation correction electric eye in the art and will not be described in detail.

[0029] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An electric eye device for a printing press, characterized in that: include: A first guide rail, with the feeding direction on the printing machine workbench as the X-axis direction, and the direction perpendicular to the X-axis direction as the Y-axis direction, and the first guide rail is parallel to the Y-axis direction; A base, wherein the base is slidably connected to the first guide rail with a locking function; a linear rail along the X-axis direction is fixedly connected to the base, a slider is slidably connected to the linear rail, a boss is provided at the rear end of the base, a micrometer screw arranged along the X-axis direction is connected to the boss, a tension spring is connected between the slider and the boss, and the tension spring forces the rear end face of the slider to always keep in contact with the front end face of the micrometer screw; An electric eye is fixedly connected to the front end of the slider.

2. The electric eye device for a printing press according to claim 1, characterized in that: The number of the first guide rails is two.

3. The electric eye device for a printing press according to claim 2, characterized in that: The first guide rail is a cylindrical guide rail; the base has two circular holes for sleeve-connecting the two first guide rails.

4. The electric eye device for a printing press according to claim 3, characterized in that: A linear bearing which is slidably connected to the first guide rail is fixedly connected in the circular hole.

5. The electric eye device for a printing press according to claim 1, characterized in that: The base is provided with a locking knob for limiting the movement of the base on the first guide rail.

6. The electric eye device for a printing press according to claim 1, characterized in that: The micrometer screw is an accessory of a threaded micrometer, and the micrometer screw is also equipped with a fine adjustment knob, a coarse adjustment knob and a scale sleeve.

7. The electric eye device for a printing press according to claim 1, characterized in that: Both sides of the printing machine workbench are fixedly connected with second guide rails along the X-axis direction, and both ends of the first guide rails are fixedly connected with brackets, and the brackets are respectively slidably connected to the second guide rails with a locking function.

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